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以实际刊发为准
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LI Fangyuan, LUO Zhongqiu, ZHOU Xintao, CAI Xiunan, SHANG Bo
2025,42(5)
Abstract:
Calcium-based material has been considered as a most promising high-temperature carbon capture material due to its high carbon dioxide absorption capacity, simple preparation process, and calcium cycling characteristics. Using calcium-based solid wastes as or constructing calcium-based adsorbents can not only save natural resources, but also achieve the utilization of industrial solid wastes, which is accordant with environmental protection concepts of “treating waste with waste and treating pollution with waste”. Firstly, the theoretical carbon sequestration potential of six common industrial calcium-based solid wastes was analyzed using Huntzinger and thermodynamics. Secondly, the methods for direct carbonization of these waste residues and the preparation of derived calcium-based adsorbents, as well as the existing problems and improvement directions, were classified and summarized. Various methods and mechanisms for improving the uptake capacity of calcium-based adsorbents were also summarized. Finally, the essence of calcium cycling was explained from the perspectives of gas diffusion, ion migration, and adsorbent’ structure stability. It was pointed out that oxygen vacancies and hollow sphere structures have great potential in improving adsorption performance, and the problems and improvement directions faced by industrial calcium-based solid waste in industrial application were pointed out.
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LI Chi, GUO Jixiang, WANG Li, CHEN Xiang-wei, XUE Peng-cheng, ZHANG Wen-long
2025,42(5)
Abstract:
In recent years, with the development of carbon nanomaterials, the synthesis and application of carbon quantum dots (CQDs) have made remarkable progress.CQDs, as a kind of green, safe and non-toxic carbon nanomaterials, show great potential for application in the petroleum field. This review firstly describes the relevant background and synthesis methods for the development of CQDs, analyzes their application potential in the petroleum field, especially the research progress and technological achievements in the areas of high efficiency oil repulsion, viscosity reduction of thick oil, oil-water separation, corrosion and scale inhibition, etc., and elaborates on the modification strategies regarding the problems and deficiencies of the CQDs in the petroleum field application, introduces the impact of different modification techniques on the modulation of their properties with the current research developments, summarizes the challenges faced by the application of CQDs in the petroleum field, and looks forward to the future research direction, i.e., optimizing the synthesis method and using the combined strategy to achieve rapid and stable mass production of CQDs; in addition, in-depth study of the mechanism of action, upgrading the surface modification technology, adopting intelligent responsive polymers for the modification or realizing the multielemental doping, etc., to enhance the usability and stability of CQDs, and make full use of their excellent properties to improve the performance and stability of CQDs, as well as to improve the performance of CQDs. In addition, it is necessary to study the mechanism of action, enhance the surface modification technology, adopt intelligent responsive polymers for modification, or realize multi-element doping to improve the usability and stability of CQDs, and make full use of their excellent properties to broaden the scope of application, so as to meet the different needs of the petroleum industry.
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Zhao Bo, An Yu, Zeng Jijun, Tang Xiaobo, Han Sheng, Yang Zhiqiang, Zhang Wei, Lu Jian, Tang Nian, Li Li, Sun Dongwei
2025,42(5)
Abstract:
Immersion refrigeration has become the key to the stable operation of high-performance ICT equipment, and fluorinated coolant is regarded as one of the most promising media due to its excellent insulation properties, good fluidity, and strong material compatibility. Since the existing coolant belongs to PFAS, a "permanent chemical" of great concern in the world, opportunities and challenges coexist in the field of coolant manufacturing. This paper reviews the development process of fluorinated coolant and the preparation method of existing coolant, pointing out the existing performance defects such as dielectric constant, thermal conductivity, and latent heat of evaporation. Based on the experience of coolant development, the preliminary idea of a new molecular structure is expounded, and the development idea of material genetic engineering is proposed, in order to provide a useful reference for the source innovation of fluorinated immersion coolant.
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QIAN Yu-lan, CUI Hai-long, FENG Yu-tao, ZHU Jun-yang, XIONG Xiao-qing
2025,42(5)
Abstract:
Sulfites and bisulfites are widely used in textile printing and dyeing, pulp and paper making, food, and healthcare, which causes the enrichment of sulfite ions (SO32?) and bisulfite ions (HSO3?) in the environment. Meanwhile, endogenous sulfur dioxide (SO2) can easily merge with water and transform into SO32?/HSO3? under physiological conditions. SO32?/HSO3? can replace the biological function of SO2, and the abnormal levels can lead to a series of physiological diseases. Therefore, the detection of environmental and endogenous SO32?/HSO3? content is particularly important. Based on the reaction mechanisms such as aldehyde nucleophilic addition, Michael addition, double bond addition, and deprotection, researchers have designed and synthesized a large number of SO32?/HSO3? fluorescent probes. This article summarizes the research progress of SO32?/HSO3? fluorescent probes. Firstly, the design strategy, sensing performance, detection mechanism, and application of probes are discussed in detail from multiple aspects, such as response time, detection limit, probe type, and detection environment. The performance data of different fluorescent probes are visually compared, and meanwhile, the differences in the structures of fluorescent probes are summarized as the reasons for the differences in their detection results for SO32?/HSO3?. Then, the mechanism of reaction, design principles, and performance optimization techniques of SO32?/HSO3? probes are deeply explored. Finally, the future design direction of SO32?/HSO3? fluorescent probes are looked forward to: the fluorescent probes with high sensitivity, high selectivity, and fast response characteristics, multifunctional fluorescent probes that can adapt to the complexity requirements of detection environments and simultaneously detect multiple ions or biomolecules, and the fluorescent probes that combine with artificial intelligence technology to achieve automated and intelligent detection and analysis.
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LIU Yali, HAN Le, KANG Xiaorong, LIU Yajun, Jing Zhaoqian
2025,42(5)
Abstract:
The discharge of organic pollutants in wastewater poses a threat to the ecological environment and human health, and membrane separation is one of the simplest and most effective treatment technologies. In recent years, MXene has become a fundamental unit for constructing high-performance membranes due to its unique "accordion" layered structure and its structural controllability. Meanwhile, various physical and chemical methods are used to precisely regulate and optimize the design of interlayer channels, in order to further enhance the permeability, selectivity, and stability of MXene membranes. In this article, bibliometrics was used to statistically analyze the research progress of MXene membranes at home and abroad. The evolution of MXene membrane structure was encapsulated, and the regulatory strategies for MXene membrane structure, including intercalation, cross-linking, self-assembly, and surface modification, were elaborated in detail. The separation efficiency and mechanism of MXene membrane for typical organic pollutants such as dyes and antibiotics are summarized and analyzed. Finally, based on the current research results, it was proposed to conduct in-depth research from the aspects of development, engineering application, and computer simulation, providing theoretical basis and technical support for the practical application of MXene membranes.
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Lan Tianyu, Zhang ?Zuoyuan, Li? Cuiqin, Zang Yu, Zu Liwu, Wang Jun
2025,42(5)
Abstract:
Dendritic metal catalysts are prepared by loading metal active centers on dendritic macro molecules. They not only have the unique structure of dendritic macro molecules but also have the functional properties of metal complexes, combining the features of both homogeneous and heterogeneous catalytic systems. In catalytic reactions, they have a synergistic effect, showing high catalytic activity and good stability. This paper first introduces the development and types of dendritic large molecules, then focuses on reviewing the research progress of dendritic metal catalysts in various catalytic reaction types (Kharasch addition, Diels-Alder, Stille reaction, allylic alkylation, hydrogenation of olefins, copolymerization of olefins, Knoevenagel condensation, Michael addition, polymerization of olefins), explaining the reasons for various dendritic effects, and discussing the future development directions of dendritic metal catalysts.
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JIA Yuyao, JIANG Qinyao, YANG Shaozhe, WU Rong, BAI Wei, TANG Anbin
2025,42(5)
Abstract:
In recent years, phosphonitrile are emerging as a new type of flame retardant, which is rich in nitrogen and phosphorus, and has high flame-retardant efficiency. The chlorine atom on Hachlorocyclotriphosphonitrile has high reactivity, and it can react with benzene ring and other groups to improve the compatibility with the base material. Chlorine atoms can also react with groups containing other flame-retardant elements (such as Si, S, etc.) to improve flame retardant efficiency through synergistic action. In addition, phosphoronitrile with the active group at the end can copolymerize with the base material to form a highly crosslinked structure, so as to reduce the degradation of the thermodynamic properties of the base material. Cyclophosphonitrile can also be used as a framework for the synthesis of micro-nanomaterials because of the multiple reactive sites on its single molecule. Recent studies have shown a new direction, introducing some groups with special properties at the active site of cyclotriphosphonitrile, which can provide phosphonitrile compounds with other properties in addition to flame retardant properties, such as water absorption resistance, insulation properties, etc. Based on the structure of phosphonitrile, this paper has discussed the effects of the structure of phosphonitrile on flame retardancy and flame retardancy mechanism, and has made a preliminary prediction on the development direction of phosphonitrile compounds in the future.
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ZHU Xiaotong, CAO Junyang, ZHANG Rongyue, JIA Hongxia, WANG Yucong, QIAO Juan
2025,42(5)
Abstract:
Persistent luminescent nanoparticles (PLNPs) are a kind of nanomaterials which can continue to emit light after stopping external excitation. This unique optical property of PLNPs allows their application in luminescence detection without constant external excitation. Moreover, it can reluminesce under the excitation of appropriate near-infrared light (NIR). This excellent optical property enables it to detect persistent luminescence without in-situ continuous excitation, so as to avoid the interference of self-fluorescence and scattered light from organisms and tissues, thus significantly improving the sensitivity of biological analysis. In order to make full use of the advantages of PLNPs in biological applications, it is becoming more and more important to design PLNPs-based nanoprobes and general strategies for connecting PLNPs with bioactive molecules / biomarkers. The use of FRET system is the most suitable strategy for the preparation of PLNPs-based nanoprobes, which solves the problem of high background signal in traditional fluorescence sensing. In this review, we summarize the synthesis methods of PLNPs and systematically introduce the research progress of PLNPs in biomedicine and food contamination detection, focusing on the application of PLNPs in bioimaging and biosensing. The research direction of PLNPs nanoprobes in the diagnosis and treatment of tumors was prospected.
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LIU Ye, ZHAO Qian, YU Yanfang, ZHEN Yinzhao, GAO Bonan, WANG Shirong, LI Xianggao, LIU Hongli
2025,42(5)
Abstract:
Alumina (Al2O3) and silica (SiO2) were deposited on the surface of anatase titanium dioxide (TiO2) particles by chemical reactive deposition. Infrared absorption spectrum, X-ray fluorescence spectroscopy, transmission electron microscope, specific surface area test etc were used to characterize the morphology and structure properties of TiO2 particles. The results show that Al2O3, SiO2 and composite shell were deposited on the surface of TiO2 particles, forming porous shell, which improves the specific surface area, surface hydroxyl content and charge capacity of TiO2 particles. Solsperse17000 was used as surfactant, and the dispersion stability of particles in liquid medium was improved through its solvation chain effect. The white reflectivity of TiO2@Al2@Si2 particles with a 15% mass concentration in toluene, dodecylbenzene, tetrachloroethylene, cyclohexane and Isopar L can reach 49.11%, 49.11%, 48.18%, 53.91% and 54.43% respectively, which is 4%~8% higher than that of raw TiO2 material. Apply TiO2@Al2@Si2 particles into electrophoretic display devices, the white reflectivity can reach 40.47% and contrast ratio can reach 59.51.
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QI Guanjie, WU Tao, SONG Liyang, LI Chengchen, ZHANG Zinuo, ZHANG Ziyan, PU Dianhui, ZHANG Meng, YIN Yunjie, WANG Chao-xia
2025,42(5)
Abstract:
In order to solve the problem of slow heat release rate and difficult temperature control of azobenzene photosensitive molecules, a variety of azobenzene phase change composites with solid-liquid phase change function in different proportions were prepared. Among them, the azobenzene phase-change material prepared in a 3:7 ratio exhibited the highest phase transition point, reaching 73.8°C. These azobenzene phase-change materials demonstrated good cyclic stability, with no significant attenuation in absorbance after 50 cycles of alternating UV and green light excitation. Additionally, they exhibited high energy utilization efficiency, with a minimal enthalpy change of only 11.1 J/g during melting and solidification, enabling maximum energy release. Moreover, the azobenzene phase-change materials showed excellent photothermal conversion efficiency, with a maximum temperature increase of 19°C above room temperature after 500s of exposure to 200 W/m2 xenon lamp light. These materials possess the characteristics of rapid heat release rate and controllable phase transition points, making them promising for a wide range of applications in human thermal management. They can efficiently store the released energy under light stimulation, facilitating photothermal energy conversion.
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SHAO Xinxiang, ZHOU Weihua, ZOU Jiaxin, CHE Siying
2025,42(5)
Abstract:
A coumarin fluorescent probe [HDQ][P66614] were synthesized from Acid-base deprotonation reaction of 3-Chloro-7-hydroxy-4-methylcoumarin (HDQ) and quaternary phosphorin[P66614][OH] as raw materials, and characterized by 1HNMR, FTIR. Based on fluorescence spectroscopy, the detection sensitivity, selectivity and anti-interference experiments were carried out to investigate the low detection limit (LOD), specificity and anti-metal cation interference of Fe3+ of the probe [HDQ][P66614], and the detection mechanism was analyzed, and the application of the test probe [HDQ][P66614] for the detection of Fe3+ in actual samples was investigated. The results showed that HDQ, as a fluorescent signal group and a specific recognition group, complexed with Fe3+ at a ratio of 1∶4 to form a non-fluorescent complex. In the concentration range of 60~600 μmol/L, Fe3+ has a good linear relationship with the fluorescence intensity of probe [HDQ][P66614] solution, LOD=0.6 μmol/L. The probe [HDQ][P66614] was simple to synthesize, the response time of Fe3+ was 10 s, and the pH=2~12 range, the probe [HDQ][P66614] had a fluorescence quenching response to Fe3+, quenching is more pronounced when the pH is farther away from 7. The probe [HDQ] [P66614] showed specificity for the detection of Fe3+ and anti-interference ability for ten
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WANG Ying-feng, HONG Da-wei, DONG Shuo, LIU Xu-yao, HU Huang, YIN Mao-li
2025,42(5)
Abstract:
In order to develop suitable food packaging films to address food contamination by foodborne pathogens, 1,3-dichloro-5,5-dimethylhydantoin (DCDMH) and curcumin were used as additives. Glycerol was employed as an antifoaming agent, and chitosan was used as the substrate. The multifunctional chitosan-based films with pH-response and antibacterial properties were prepared using the casting process. SEM and FT-IR were employed to analyze the morphology and chemical structure of chitosan composite films. Based on numerous tests, including mechanical, transmission, water vapor permeability, moisture content, water solubility, pH response, and antibacterial properties (with or without illumination), the impact of curcumin and DCDMH on the physical, pH responsiveness, and antimicrobial efficacy of chitosan composite films was investigated. The results showed that DCDMH, curcumin and chitosan were mixed uniformly, resulting in a tight membrane structure. The thickness of CS-Cur-I (mcurcumin: mDCDMH, 1:1) and CS-Cur-Ⅱ (mcurcumin: mDCDMH, 3:7) was slightly enhanced (0.071 mm), and the breaking forces (40.92 N, and 54.46 N) were simultaneously increased. The composite films showed visible pH-responsive properties under different pH conditions. As the environmental pH increases, the color of CS-Cur-I deepens continuously, shifting from yellow to reddish-brown. The chitosan composite films showed good antibacterial with or without irradiation, and 100% of S. aureus (7.00 logs) and E. coli (7.00 logs) were inactivated within 30 min.
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SONG Qiao-ying, Baoyi Zhao, Ziqing Liu
2025,42(5)
Abstract:
Objective: To investigate the extraction process of tea polyphenols from Xinyang Maojian with ultrasound-assisted deep eutectic solvent (DES), the antioxidant activity in vitro and in vivo and its ability to regulate intestinal flora. Methods: The single factor orthogonal method was used to optimize the extraction process of polyphenols from Xinyang Maojian tea with ultrasound-assisted DES. The scavenging ability of 1, 1-diphenyl-2-trinitrophenylhydrazine (DPPH), hydroxyl radicals and 2, 2-diazine-bis (3-ethyl-benzothiazole-6-sulfonic acid) diamiammonium salts (ABTS) was used as the antioxidant method in vitro. At the same time, the antioxidant activity of tea polyphenols at cellular level was determined by cellular antioxidant activity (CAA) method. In addition, 60 healthy male C57BL/6 mice were randomly divided into 6 groups: blank group (NC), model group (MC), positive control group (PC), tea polyphenol low dose group (LTP, 5.0 mg/kg bw), tea polyphenol medium dose group (MTP, 10.0 mg/kg bw) and tea polyphenol high dose group (HTP, 20.0 mg/kg bw). Except the NC group, the other mice were intraperitoneally injected with 50 mg/kg bw D-galactose to establish the aging model. After administration, the liver and kidney organ index, serum biochemical index, serum immune index and serum oxidation index were measured. Moreover, 16S rRNA gene high-throughput sequencing was used to cluster and analyze the diversity of cecum contents in each group. Results: The optimal extraction process of polyphenols from Xinyang Maojian tea was as follows: DES choline chloride: acetic acid 1:3, moisture content 30%, ultrasonic temperature 40℃, ultrasonic time 25 min, ultrasonic power 115 W, solid-liquid ratio 1:35 (g:mL). In addition, studies on antioxidant activity in vitro showed that when the concentration of tea polyphenols was 6g/L, the scavenging rates of DPPH free radicals, hydroxyl free radicals and ABTS free radicals were 59.23%, 60.49% and 41.65%, respectively. CAA analysis showed that when the concentration of tea polyphenols was 5g/L, CCA value could reach 63.2. The results of animal experiments showed that Xinyang Maojian tea polyphenols can significantly reduce the levels of low density lipoprotein cholesterol (LDL-C), aspartate aminotransferase (AST) and glutamic-pyruvic aminotransferase (ALT) in serum, and increase the level of high density lipoprotein cholesterol (HDL-C), which has a certain protective effect on the organs of aging mice. Moreover, tea polyphenols can increase the levels of pro-inflammatory factors interleukin-12 (IL-12), interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α), and reduce the levels of anti-inflammatory factor interleukin-10 (IL-10), so as to improve the inflammatory response of aging mice. Tea polyphenols also increased the activity of glutathione peroxidase (GSH-Px) and superoxide dismutase (SOD) in serum, while decreased the level of malondialdehyde (MDA), thereby increasing the antioxidant capacity of mice. Intestinal flora analysis showed that tea polyphenols can change the abundance and diversity of intestinal flora, especially increase the abundance of beneficial bacteria Lactobacillus, Candidatus_Saccharimonas and Corynebacterium, and decreased the abundance of harmful bacteria Desulfovibrio and Muribaculaceae, thereby improving the disorder of intestinal flora in D-galactose-induced aging mice, and thus effectively regulating the normal operation of metabolic pathways in mice. Conclusion: This study provides a green and efficient method for extracting polyphenols from Xinyang Maojian tea, and the polyphenols have certain antioxidant activity and the ability to regulate intestinal flora, aiming to lay a foundation for further research and industrialization of Xinyang Maojian tea.
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REN wen-ting, LIU Shu-yu, HUA Junfeng, HAO Si-yu, FENG Jia-jia, WAN Chao
2025,42(5)
Abstract:
Ammonium borane (NH3BH3, AB), as the simplest B-N compound, has a simple structure, a light molecular weight of only 30.7 g/mol, and a hydrogen storage capacity of up to 19.6 wt%, making it one of the most ideal liquid phase hydrogen storage materials at present.The key to achieving efficient hydrogen production is the preparation of catalysts with high selectivity and stability.This article adopts a solvothermal method to synthesize copper oxide nanosheets (CuO-Ns) with nano defects in a high concentration alkaline solution, and explores the preparation of catalysts with different morphologies by changing the hydrothermal temperature and time during the preparation process.The investigation results show that when the hydrothermal temperature is 373 K and the hydrothermal time is 12 hours, the morphology of the catalyst is nanosheets, with the best catalytic activity and the highest reaction conversion frequency (TOF) value. At this time, the TOF value of the catalyst is 115.21 h-1, and the AB hydrogen production rate is positively correlated with the AB concentration and catalyst concentration.
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LIU Qiu-ling, CHEN Yi, ZHANG Qian, LIU Shu-jun, LV Yun-kai, NIU Li-bo
2025,42(5)
Abstract:
A high efficiency nickel-based catalyst was developed for catalytic hydrogenation of furfural from biomass platform molecule to furfuryl alcohol in the absence of hydrogen. Three kinds of NiAl catalysts were prepared by different preparation methods, and the catalytic performance of the catalysts was investigated in the hydrogenation of furfural (FAL) to furfuryl alcohol (FOL). The physical and chemical properties of the catalysts were systematically studied by XRD, H2-TPR, TEM, NH3-TPR and XPS. The catalyst NiAl-HT prepared by hydrothermal method has larger specific surface area, abundant acidic sites, uniform distribution of Ni nanoparticles, and strong interaction between the Ni and AlOx supports, which results in the excellent catalytic performance of NiAl-HT in FAL transfer hydrogenation reaction. Under the optimized conditions, 140 oC , 0.5 Mpa nitrogen pressure and 60 min reaction time, the conversion of FAL and FOL selectivity are both as high as 99.9%.
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LI Rui-li, WANG Shuo-ying, FU Qi, REN Rui-bing, LI He-lin, ZHANG Jun-song
2025,42(5)
Abstract:
In order to explore the effect of drying methods on the drying characteristics and volatile composition of longan pulp, hot air drying (HAD), microwave vacuum drying (MVD) and vacuum freeze drying (VFD) were used to pretreat longan pulp. The classical thin-layer drying mathematical model was used to fit the drying process of longan pulp in three ways, and the volatile components of longan pulp treated by headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) combined with electronic nose sensor were detected and analyzed, cluster analysis and partial least squares discriminant analysis were used to clarify the differences in volatile components between samples and the characteristic volatile components. Results showed that the drying rate of the three drying methods is MVD> HAD>VFD. Weibull distribution model was found to be the most suitable mathematical model for predicting the drying characteristics of three drying methods; HAD and MVD had significant effects on the color of longan pulp（P＜0.05）, while VFD better maintained the original color; A total of 89 volatile components in 9 categories were detected before and after drying, 59 ,47, 52 and 52 volatile components were detected in fresh longan and longan treated with HAD, MVD and VFD, respectively. The nine volatile components were alcohols, olefins, esters, aldehydes, ketones, alkanes, aromatic hydrocarbons, heterocyclic and phenols, among which olefins and esters had the highest relative contents. Twenty-six characteristic volatile substances played an important role in distinguishing the four samples.
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LIU Lu-yao, WANG Bao-juan, LI Ming-jie, HU Jun-ping, YANG Jian-hua
2025,42(5)
Abstract:
Abstract: To investigate the synergistic effect of cistanche phenylethanol side (PhGs) and glabridin (Gla) on skin pigmentation, the mass ratio of PhGs and Gla was screened by in vitro tyrosinase inhibition experiment,1, 1-diphenyl-2-trinitrophenylhydrazine (DPPH) free radical scavenging experiment and 2, 2-diazo-bis (3-ethyl-benzothiazole-6-sulfonic acid) diamiammonium cation (ABTS+) free radical scavenging experiment. The UVB-induced cytopigmentation model of B16F10 was further established, and the inhibition of melanin production was evaluated using tyrosinase activity and melanin content as indexes. The inflammatory model of HaCaT cells induced by lipopolysaccharide (LPS) was established, and the anti-inflammatory effect of the drug was evaluated by inhibiting the release of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α). The oxidative stress model of HaCaT cells induced by azodiisobuamidine hydrochloride (AAPH) was established, and the activity of superoxide dismutase (SOD) and catalase (CAT) was increased as indexes to evaluate the antioxidant effect of the drug. The optimal mass ratio of PhGs and Gla was selected by the above three cell models. The results showed that aqueous solutions of PhGs/Gla(1∶1), PhGs/Gla(5:1) and PhGs/Gla(10:1) prepared with m(PhGs):m(Gla) = 1:1, 5:1, 10:1 had good inhibitory and synergistic effects on tyrosinase activity and antioxidant activity. The inhibition rates of PhGs/Gla(1:1), PhGs/Gla(5:1) and PhGs/Gla(10:1) aqueous solutions at 0.4 mg/mL were 94.37%, 92.93% and 88.06%, respectively. The scavenging rates of DPPH free radicals were 89.44%, 88.72% and 88.10%, respectively. The scavenging rates of ABTS+ free radicals were 100.13%, 100.01% and 99.87%, respectively. When the mass concentration of PhGs/Gla was 25 μg/mL, PhGs/Gla(1:1), PhGs/Gla(5:1) and PhGs/Gla(10:1) aqueous solutions showed no cytotoxicity to B16F10 and HaCaT cells. The inhibition of tyrosinase activity in PhGs/Gla(1:1) aqueous solution was stronger (tyrosinase activity 23.80%), and the melanin content (30.90%) was significantly decreased. PhGs/Gla(1:1) aqueous solution had the best inhibition effect on IL-6 and TNF-α release, and the ability to enhance the activity of SOD and CAT. It showed good synergistic performance of the combination of PhGs and Gla, which was superior to single drug, and higher than PhGs/Gla(5:1) and PhGs/Gla(10:1) aqueous solution. The combination of PhGs and Gla plays a synergistic role in improving skin pigmentation by inhibiting melanin production, anti-inflammatory and antioxidant effects.
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CAI Yi-fei, 齐舵, WANG Tian-yu, ZHANG Yi-bo
2025,42(5)
Abstract:
Lithium-sulfur batteries, as a promising secondary battery system, have garnered extensive attention due to their exceptionally high energy density. However, the shuttle effect of soluble lithium polysulfides (LiPS) in traditional liquid electrolytes significantly impedes the development of lithium-sulfur batteries. In this work, a gel polymer electrolyte for lithium-sulphur batteries was prepared by using semi-in-situ polymerisation at lithium cathode with the advantage of the rapid and convenient characteristics of UV photoinitiated polymerization. This electrolyte is composed of a poly(ethylene glycol) dimethacrylate (PEGDMA) polymer crosslinked network combined with a PP separator, which can effectively suppress the shuttling of LiPS while maintaining a high ionic conductivity. Compared to the general preparation method of polymer gel electrolytes, batteries assembled using the semi-in-situ method at the lithium anode show significant improvements in the stability of the lithium anode and the retention of battery capacity. Further, the effect of monomer concentration on the performance of gel polymer electrolytes and lithium-sulfur batteries was investigated. The battery maintains a discharge specific capacity of 735.1mAh/g after 150 cycles at a 0.2 C rate, with a capacity retention rate reaching 80.8%.
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Huang zhi-liang, ZHOU Chang-lin, WU xinsheng, LI Jiang-guo, LUO Changjiang, WANG Lei, CAI Zhong
2025,42(5)
Abstract:
To achieve the green preparation of electrodes, a self-supporting electrode (SSE) was prepared using cotton fiber, nano-cellulose, sodium carboxymethyl cellulose, and copolyacrylate emulsion as adhesives, carbon black (CB) and carbon fiber (CF) as conductive agents, activated carbon (AC) as the active material, and water as the dispersant. To further enhance the conductivity of the electrode, a self-made CB conductive slurry was used to conductively strengthen the SSE, creating a conductively strengthened self-supporting electrode (CSSE). Characterization through SEM, BET nitrogen adsorption, contact angle, and electrochemical performance tests revealed that the SSE possesses a rich porous structure that allows rapid wetting by the electrolyte. The conductive strengthening effectively improved the conductivity of the electrode, resulting in abundant ionic microchannels and conductive pathways. To further boost the energy density of supercapacitors (SC), AC loaded with manganese dioxide (MnO2@AC) powder was prepared using a simple one-step aqueous carbon reduction method. Subsequently, a CSSE-MnO2 electrode was fabricated and paired with an AC electrode to assemble an asymmetric supercapacitor known as ASC (CSSE-MnO2//AC). Its electrochemical performance was evaluated in both neutral Na2SO4 electrolyte and redox electrolytes. The study found that the addition of redox-active electrolyte ammonium iron citrate to the neutral Na2SO4 electrolyte enables rapid and reversible redox reactions on the electrode surface, further enhancing the electrochemical performance of the ASC within a voltage window of 2.0～2.4 V. The assembled ASC exhibited exceptional areal capacitance (1.5 F/cm2 at a current density of 3～11 mA/cm2), a wide operating voltage window (2.0～2.4 V), satisfactory rate capability (1.2 F/cm2 at a current density of 84 mA/cm2), and outstanding cycling stability (maintaining 80% of its initial capacity after 10,000 cycles at 2 A/g). It achieved a remarkable energy density of 37.6 Wh/kg at a power density of 300 W/kg. The simple and cost-effective preparation process of CSSE offers a novel and feasible strategy for developing inexpensive, and safe energy storage devices.
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QIU Yong-kang, HE Huan, GUO Bin, LI Pan-xin
2025,42(5)
Abstract:
In order to improve the mechanical and water resistance of thermoplastic starch (TPS), The effects of PR (Polymerized Rosin) and glycerol on the molecular structure, mechanics, cross-section morphology, thermal properties and water resistance of TPS were investigated by FTIR, electronic universal testing machine, scanning electron microscopy, thermogravimetric analyzer and contact angle tester. The results showed that the carboxyl group in PR was esterified with the OH on TPS, and with the increased content of PR , the tensile strength, bending strength and thermal properties of the sample gradually increased, while the elongation at break, impact strength and moisture absorption rate gradually decreased. When the mass fraction of PR was 10% and the mass fraction of glycerol was 15%, 80PR-TPS had the best properties, and its tensile and bending strengths reached the maximum of 15.25 MPa and 25.83 MPa, respectively, which were 8.81 and 23 times of TPS, while the elongation at break and impact strength decreased significantly. The contact angle reached the maximum78.8°, which is nearly 2.9 times that of TPS, and the equilibrium moisture absorption rate decreased from 9.60% of TPS to 6.37%, indicating improved water resistance. In addition, the thermal performance is also significantly improved.
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TIAN Tian, OLUBUNMI M.Olukowi, ZHANG Yuejun
2025,42(5)
Abstract:
Abstract: Taking the raw water of the Yangtze River as the simulated object, polyaluminum chloride (PAC) as the coagulant, and PAC/polydimethyldiallylammonium chloride (PDMDAAC) as the composite coagulant, the simulated raw water containing nitrogen disinfection by-product N-nitrosodimethylamine (NDMA) was used for coagulation treatment (coagulant treatment) and enhanced coagulation treatment (composite coagulant treatment), and the correlation between the water quality parameters (turbidity, CODMn, organic amine and ammonia nitrogen) and the NDMA removal rate in the simulated raw water after treatment was compared. Combined with the analysis of the microstructure, functional group properties and coagulation mechanism of the SEM characterization of pollutants representing water quality parameters, the removal mechanism of NDMA was speculated. The results showed that the water quality parameters and NDMA removal rate of various simulated raw water increased first and then stabilized or slightly decreased with the dosage increase of coagulant or composite coagulant after coagulation and enhanced coagulation treatment. The maximum removal rate of NDMA (5.88%~15.65% and 6.48%~16.90%) of one-component simulated raw water (containing NDMA and one of the four simulated pollutants (diatomite, sodium humate salt, dimethylamine hydrochloride and ammonium nitrate) was higher than that of NDMA containing only by (4.31% and 4.88%). The maximum removal rate of NDMA in multi-component simulated raw water (containing NDMA and four simulated pollutants (diatomite, sodium humate salt, dimethylamine hydrochloride and ammonium nitrate) was the highest (39.15% and 42.04%). The four pollutants adsorbed NDMA to different degrees based on their different microstructures and surface functional group characteristics. The electric neutralization and adsorption bridging effects generated by coagulants and composite coagulants can remove free and adsorbed NDMA by pollutants. The adsorption and synergistic adsorption of pollutants and the enhanced coagulation of composite coagulants significantly enhanced the removal of NDMA.
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TIE Jing-xi, YAN Meng-jia, DUAN Xiao-han, MA Jia-ying, WU Ji-sheng, SONG Yan-fei, CHEN Du, LIU Yu-hao
2025,42(5)
Abstract:
Papermaking sludge (PMS) and iron-based waterworks sludge (IBWS) was used as raw materials to prepare magnetic dual sludge biochar (MDSBC) using the one pot method. After being characterized by SEM, N2 adsorption-desorption, XRD, FTIR, XPS, and vibrating sample magnetometer, the static adsorption of ciprofloxacin hydrochloride (CIP) in water by MDSBC was studied. The results showed that when the mass ratio of IBWS: PMS was 1:2.5, MDSBC prepared by pyrolysis at 500 ℃ in N2 atmosphere had desirable CIP adsorption capacity and good magnetic separation performance. Within the initial pH range of 3-9, the adsorption capacity at pH 3 was the lowest due to electrostatic repulsion, which is 28.13 mg/g; The adsorption capacity was highest at pH 5, which was 33.65 mg/g. The adsorption process of CIP by MDSBC fitted the pseudo-first-order kinetic model. The adsorption isotherm model conformed to Langmuir model, and the adsorption process was spontaneous and exothermic. Aqueous Cl- and SO42- prompted CIP adsorption slightly, while PO43- could significantly inhibit the CIP adsorption with the rising PO43- concentration. After 5 cycles of reuse, the adsorption capacity of MDSBC decreased by 12.5%. The mechanism analysis indicated that electrostatic adsorption, chemical adsorption, hydrogen bonding, and π-π interaction were involved in the adsorption of CIP by MDSBC.
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Wang wen-lu, Jing yi, Bao kang
2025,42(5)
Abstract:
Using biochitosan quaternary ammonium salt (HACC) as functional monomer, acrylic acid (AA), butyl acrylate (BA), isooctyl acrylate (EHA) as soft monomer, methyl methacrylate (MMA) as hard monomer, and ammonium persulfate (APS) as initiator, semi-continuous seed pre-emulsion method was adopted. The water-proof and oil-proof AKD-HACC-A coating paper was prepared by using the method of surface coating with HACC-A and alkyl ketene dimer (AKD). The effects of emulsifier type, reaction time, initiator dosage, reaction temperature and HACC dosage on the particle size distribution and storage stability of HACC-A were investigated. Based on the characterization of FTIR, SEM and EDS, as well as the tests of water and oil resistance, physical properties, mechanical strength and printing effect of the paper, the influences of the coating amount of HACC-A, the ratio of HACC-A and AKD on the Cobb value of the coated paper and the oil resistance grade of kit were investigated. The results showed that the optimal synthesis process of HACC-A was as follows: OP-10 with a mass fraction of 5% (percentage of the total weight of monomer, the same below) is the emulsifier, the reaction temperature is 70 ℃, the amount of initiator APS is 0.8% (percentage of the total weight of monomer, the same below), and the reaction time is 2 h. Under such conditions, the particle size of HACC-A emulsion prepared is about 200 nm, the distribution is narrow, and the blue light is obvious. Stable storage for a long time (60 d); When the amount of HACC is 5 g and the amount of coating is 6 g/m2, the 60 s Cobb value of the paper after HACC-A coating is 54 g/m2, and the kit oil-proof grade is 6, which meets the food packaging standard. When m(HACC-A)∶m(AKD) = 1∶1, the coating amount is 6 g/m2. After coating the paper, the Cobb value of AKD-HACC-A coated paper 60 s is 30 g/m2, and the kit oil proof grade is 10. It showed good barrier properties to common oils (edible oil and pepper oil at room temperature and 105 ℃), organic solvents (ethanol and acetone) and alkaline solutions (hydrochloric acid and NaOH solution), and its oil proof performance was better than that of PE coated paper (Kit oil proof grade 6) and close to that of fluorinated paper (Kit oil proof grade 11). The active groups of amino and hydroxyl groups on the surface of HACC and good film formation play a key role in improving the performance of oil repellant AKD-HACC-A.
Volume 42, 2025 Issue 5
Review and monographs
Functional materials
Modernization technology of traditional Chinese medicines
Catalysis,separation and purification technology
Perfumes and essences
Drug and cosmetic materials
Electro-organic chemistry and industry
Starch chemicals
Water treatment technology and environmental protection
Papermaking chemicals
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XING Xin-xin, LIU Ji-shuang, ZHU Yan, ZHENG De-xu, GUO Xin, WU Sa-jian, GUO Xiao-jun, ZHANG Hao-xiang, LIU Shengzhong
2025,42(6)
Abstract:
In recent years, the development of flexible supercapacitors has become one of the research hotspots in the field of electrochemistry. The selection and design of electrode materials are critical to improving the performance of flexible supercapacitors. In the past few years, researchers have continuously explored and developed various new electrode materials to meet the needs of flexible supercapacitors for high energy density, high power density, long cycle life, and good flexibility and fabricability. The article summarizes common electrode materials including carbon-based materials with high conductivity, metal oxides with high theoretical capacitance, environmentally friendly organic electrode materials, metal-organic frameworks (MOFs) with unique structures and excellent electrochemistry, and Emerging two-dimensional transition metal carbon/nitride materials (MXene), etc. Research progress in flexible supercapacitors presents some current challenges faced by the field and looks forward to future development prospects. Despite significant progress, there are still some pressing issues that need to be addressed. As the research on flexible supercapacitors continues to deepen and new electrode materials continue to emerge, it is believed that flexible supercapacitors will usher in more widespread applications in wearable electronics, smart medical care, wearable sensors and other fields.
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Wang Chen, ZHANG Chu-yi, YAO Hong-rui, WANG Na
2025,42(6)
Abstract:
Modified carbon fiber reinforced polyurea composite (KH550-CF/PU) was prepared with polyurea resin (PU) as matrix, carbon fiber (CF) as reinforcer and silane coupling agent (KH550) as modifier. The microstructure and thermal properties of modified carbon fiber and its reinforced polyurea composites were investigated by SEM, FTIR, XRD and DSC. The results showed that silane coupling agent KH550 was successfully modified on the surface of carbon fiber to enhance the compatibility and wettability of carbon fiber and polyurea resin. The mechanical and anti-explosion properties of KH550-CF/PU composites were studied by quasi-static tensile and compressive tests and Hopkinson compression tests. The results show that the mechanical properties of the composites are obviously better than that of pure PU, especially KH550-CF/PU. The maximum tensile stress is 22.88MPa, the maximum tensile strain is 223.95%, the maximum compressive stress at the elastic stage is 2.17kN, the energy absorption is 0.64Mj·m-3, and the yield strength is 103.18MPa at 5000s-1.
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WU Jing-yi, YAO Li-hui, LI Chuan-ying, QIU Dan
2025,42(6)
Abstract:
The maleic anhydride-modified corn starch was prepared from corn starch by sodium carbonate pretreatment in maleic anhydride molten system, and the composite material, maleic anhydride-modified corn starch/polylactic acid, was composited with polylactic acid. The 1HNMR test method for the degree of substitution of maleic anhydride-modified corn starch was established and optimized by one-way and response surface experiments using the degree of substitution as the response value; the micro-morphology, structural composition and thermal properties of maleic anhydride-modified corn starch were characterized by SEM, FTIR, XRD and DSC, and the mechanical properties and hydrophobic properties of the maleic anhydride-modified corn starch/polylactic acid were tested by using a universal testing machine and a water contact angle measuring instrument. mechanical and hydrophobic properties. The results showed that the optimal corn starch pretreatment process was as follows: sodium carbonate solution concentration of 0.97 mol/L, mixing time of 51.5 min, and starch mass of 2.5 g in 100 mL sodium carbonate solution, and the degree of substitution of maleic anhydride-modified corn starch (MA-ST-1) was 0.790, which was 91.7% higher than that of the modified starch prepared with the traditional technique (0.412) It was confirmed that the sodium carbonate pretreatment process effectively enhanced the conversion rate of esterification reaction. MA-ST-1 had smaller crystallinity (22.79%) and lower melting temperature (98.9 ℃), and the tensile strength and elongation at break of MA-ST-1/poly(lactic acid) were 47.771 ± 0.675 MPa and 13.728% ± 1.369%, respectively, and the water contact angle was 75.86° ± 1.19°. In the composite MA-ST-1/polylactic acid, the hydrolyzed product of maleic anhydride, butenedioic acid, acted as a bridge between corn starch and polylactic acid, which enhanced the mechanical properties and interfacial compatibility of the composite.
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JIA Wan-he, LIU Han-yu, WANG Ke-wei, LIU Chun
2025,42(6)
Abstract:
Three neutral cyclometalated platinum(Ⅱ) complexes were synthesized by liquid-phase coordination complexation. All complexes show aggregation-induced phosphorescence emission (AIPE) properties in THF/H2O. These complexes can be used to detect picric acid in the aqueous phase with a minimum detection limit of 0.10 μmol/L. In the presence of the compounds similar in structure to picric acid or common ionic compounds, the three complexes exhibit high selectivity for detecting picric acid. Moreover, all three complexes can successfully detect picric acid in various natural environments, including seawater, river water, rainwater, and tap water. The mechanism for the detection of picric acid by platinum(Ⅱ) complexes was confirmed to be photo-induced electron transfer through density functional theory calculations and other analytic methods.
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SONG Qiaoying, ZHAO Baoyi, LIU Ziqing
2025,42(6)
Abstract:
The process parameters of extracting Tremella fuciformis Berk. polysaccharides from deep eutectic solvent (DES) were optimized in this study, including DES composition, solid-liquid ratio, ultrasonic power, ultrasonic time, and ultrasonic temperature. The results showed that the optimal extraction technology was solid-liquid ratio 1:35 (g/mL), DES water content 15%, ultrasonic time 40 min, ultrasonic temperature 60℃, ultrasonic power 200W, and the highest extraction rate was 24.73%. Subsequently, the experiment was carried out on diabetic mice with Tremella fuciformis Berk. polysaccharide obtained by this extraction method. The results showed that Tremella fuciformis Berk. polysaccharide could significantly reduce the blood glucose, oxidative stress and inflammatory response of diabetic mice, improve the body weight, glucose tolerance and insulin sensitivity of mice, and improve the state of glucose metabolism of mice. In terms of intestinal flora analysis, this study used high-throughput sequencing technology to sequence the intestinal flora of mice, and analyzed the effect of Tremella fuciformis Berk. polysaccharide on the structure of intestinal flora. The results showed that Tremella fuciformis Berk. polysaccharide could significantly increase the number of beneficial bacteria in the intestines of mice. For example, the abundance of Ddferribacterota, Verruconicrobia, Actinobacteria, Bacteroidetes and Firmicutes, while reducing the proportion of harmful bacteria, Such as Campilobacterota and Proteobacteria and so on, which helped to improve the intestinal environment of mice and improve the level of intestinal health. This study not only provided a new method for the efficient extraction of tremella polysaccharide, but also revealed the positive effects of tremella polysaccharide on the intestinal flora of diabetic mice.
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YU Si-wei, ZHONG Zhaohuang, LI Xindong, JIA Jianghui, CAI Meng, BAO Luo, ZHU Qinyan, HUANG Wanfu
2025,42(6)
Abstract:
Tannic acid (TA) was encapsulated on the surface of MOF-808 via a blending method to synthesize TA@MOF-808 composite nanomaterials. These nanomaterials were then incorporated into a polyetherimide (PEI) ultrafiltration membrane using the phase inversion technique. The TA@MOF-808 doped PEI ultrafiltration membrane was characterized by FTIR, XPS, SEM, AFM and contact angle measurements (CA)to assess functional groups, chemical structure, surface morphology, cross-sectional structure, surface roughness, and hydrophilicity. The results demonstrated that when the mass fraction of TA@MOF-808 was 0.04%, the ultrafiltration membrane exhibited superior performance, achieving a pure water flux of approximately 926.1 L·m-2·h-1 under an operating pressure of 0.1 MPa and a rejection rate of 93.9% for a 0.1 g/L bovine serum albumin (BSA) solution. In a 14-day long-term stability test conducted in a dilute sulfuric acid solution at pH 3, the pure water flux remained stable between 840-845 L·m-2·h-1, with a rejection rate of 97.5% and a flux recovery rate exceeding 93%, indicating excellent separation performance and structural stability.
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YUAN Qinxuan, YUAN Minglu, YOU Shiquan, SHI Doudou, LI Meng, WANG Changtao
2025,42(6)
Abstract:
The fermentation broth of Isodon rubescens (Hemsl.) H. Hara was prepared using lactic acid bacteria and Saccharomyces cerevisiae as fermentation strains, and compared with the water extract obtained by direct water extraction. The antioxidant and anti-inflammatory activities of the fermentation broth were evaluated by biochemical and cell experiments in vitro. The results showed that microbial fermentation could increase the content of active ingredients in samples extracted by Isodon rubescens. Among them, compared with the Isodon rubescens water extract, the total sugars concentration of the Isodon rubescens lactic acid bacteria fermentation broth has the most significant increase, from 1.714±0.004mg/mL increased to 3.695±0.010mg/mL. The fermentation broth showed stronger antioxidant capacity than the aqueous extract in DPPH, ABTS and hydroxyl radical clear assays, and the free radical scavenging capacity of the Isodon rubescens Saccharomyces cerevisiae fermentation broth was slightly higher. In the other two groups of samples, the ABTS free radical scavenging rate was significantly improved compared with the Isodon rubescens water extract. In the cell experiment, after the inflammatory response of cells stimulated by lipopolysaccharide (LPS), the expression levels of inflammatory factors in the three samples were significantly reduced, and the effect of the two fermentation broth was stronger than that of the water extract, showing better anti-inflammatory activity.
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SHI Hong-ling, FU Mu-ran, Xu Qian, HUANG Hong-hui, YAO Lun-guang, TANG Cunduo
2025,42(6)
Abstract:
CO2 reduction and conversion are the most attractive alternative to mitigate the greenhouse effect. However, the traditional CO2 reduction technologies had high energy consumption and low efficiency. Bioelectrocatalysis is a new green and efficient catalytic CO2 reduction technology emerging in recent years, which combines the advantages of biological enzymtic catalysis and electrocatalysis, can efficiently realize the conversion of chemical energy and electric energy, improve the efficiency of electron transfer in redox reaction, and provide a potential solution for alleviating the greenhouse effect and producing value-added fine chemicals. In this paper, the characteristics and four-stage development of bioelectrocatalysis technology are briefly described. Then, the types of electrode materials for bioelectrocatalysis (including carbon felt, graphite rods, etc.), the selection of electrocatalysts (especially biocatalytics including enzymes and microbial cells), cofactors (such as natural cofactors reduced coenzyme I and artificial cofactors, etc.) and reduction products (formic acid, methane, methanol, acetic acid, etc.) are systematically summarized. Finally, the feasible research directions of CO2 reduction in the future are prospeced, including the development of novel materials that can adsorb CO2 and immobilize microbial cells with enzyme or CO2 reduction activity. To improve the efficiency of bioelectrocatalysis, the design of electrode materials and reaction system was optimized. Fully integrate the latest technologies in metabolic engineering and systems biology.
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WANG Bo, LI Jingwen, FEI Chao, LI Chen, FAN Zhiping
2025,42(6)
Abstract:
This review comprehensively discusses the recent advances in biochar-based layered bimetallic (BC/LDHs) composites in the field of environmental pollutant removal. Firstly, the preparation methods of BC/LDHs materials, including co-precipitation, co-pyrolysis and hydrothermal synthesis, and the modulation of material properties by means of heterogeneous atom doping, chemical impregnation and fugitive magnetization enhancement are discussed in detail. Secondly, the effectiveness of BC/LDHs materials in the removal of dyes, heavy metals, nutrient salts and antibiotics was clarified, and the key mechanisms of their removal of environmental pollutants were analyzed and summarized. Further, the limitations of BC/LDHs materials in environmental applications are assessed, including the removal efficiency of specific pollutants, the adaptability under complex environmental conditions, and the long-term stability of the materials. Finally, corresponding solution strategies are proposed to address these challenges, providing new perspectives and research directions to promote the application of BC/LDHs materials in environmental pollutant removal.
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2025,42(6)
Abstract:
Compared with traditional hydrogels, self-healing hydrogels have excellent self-healing properties and biocompatibility. They are ideal materials in the fields of biology, medicine and materials, and have important research significance. In recent years, as a new type of profile control and water plugging material, self-healing gels have also been widely studied in the field of petroleum engineering. These hydrogels can completely restore their structure and properties by forming new crosslinking networks after being damaged, showing superior mechanical properties and stability compared to traditional hydrogels. However, there is still a lack of systematic summarization and understanding of their self-healing performance. Therefore, this paper introduces the mechanism of self-healing gel, summarizes the types of self-healing gel applied in the field of oil and gas development, focuses on the evaluation methods of self-healing performance of self-healing gel at different stages, and analyzes the factors affecting self-healing performance, so as to provide design ideas and references for future research. At the same time, the application prospect of self-healing gel in oil and gas development is prospected.
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LiShunyang, DaiChaomeng, ZHANG Jun-bo, HU Jia-jun, GUO Ji-feng, ZHANG Ya-lei
2025,42(6)
Abstract:
Due to the stability and strong oxidizing properties of persulfate (PS), persulfate-based advanced oxidation processes (PS-AOPs) has attracted extensive attention in recent years, especially in the remediation of organic pollutants. Persulfate typically requires catalysts for efficiently removal of organic pollutants, which carbon materials have become good catalysts of persulfate as a result of being green, high efficiency and cost-effective. Therefore, in recent years, significant progress has been made in the research and exploration of activated persulfate technology for carbon materials, covering aspects such as degradation mechanisms, types of carbon materials, influencing factors, and technological coupling. But there are few systematic review articles related to these advances. So this paper reviews these advances and provides a prospect on the development and applications of this technology.
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WANG Ji, YANG Qian, ZHAO Xiao, LIU Sheng
2025,42(6)
Abstract:
Recently, physical stimuli-responsive wormlike micelles have received considerable attention from both scientific and technological perspectives due to their tunable rheological properties. Compared to chemical triggers including pH, CO2 and redox agents, physical stimuli show distinct advantages such as ease of operation, no byproducts, environmental friendliness and non-invasiveness. We herein review the advances in physical stimuli responsive wormlike micelles regarding fabrication strategies, responsive mechanisms, rheological properties and practical applications. The existing studies mainly focus on the system construction and fundamental theoretical aspects. The inefficient trial-and-error method dominates the fabrication methods, while the related applications are still in the laboratory stage. Therefore, future preparation approaches should be combined with artificial intelligence techniques including big data simulation and machine learning. Meanwhile, it is highly desirable to investigate the performance changes and response characteristics of physical stimulation-responsive wormlike micelles for their large-scale production and application in the field implementation.
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2025,42(6)
Abstract:
9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and its derivatives have garnered significant attention in the realm of flame retardancy treatments for epoxy resins due to their abundant P—H bonds and gas-phase flame retardant properties. However, the addition of DOPO can adversely affect the mechanical strength and other properties of the materials. With the increasing demand for a balance between flame retardancy and overall performance of epoxy resins in modern society, the construction of composite systems is beneficial for maintaining the overall performance indicators of the materials. Here, this article provided a comprehensive overview of the research advancements in DOPO-based derivative synergistic flame retardants for epoxy resins over the past five years, particularly focusing on the effective components such as DOPO-N, DOPO-P, DOPO-S, DOPO-Si, DOPO-C, and DOPO-bio-based materials. The flame retardant performance and mechanical performance indicators of the modified composite materials were discussed in detail. Although a large number of DOPO derivatives have been designed for flame retardancy in epoxy resins, there are still a few concerns that need to be addressed, such as complex production processes, unclear flame retardant mechanisms, and incomplete environmental safety assessment systems. The trend of DOPO derivatives is to use chemical structure modification techniques to impart better environmental and economic properties to epoxy resins with smaller loading amounts.
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HU Yulong, ZHANG Ruqiang, LI Wenjun, YANG Ling, LONG Zhu
2025,42(6)
Abstract:
As an emerging green sustainable recycling material, biodegradable food packaging materials have been widely used in the field of food packaging because of their properties such as easy regeneration of raw materials, easy degradation after use, safety and harmlessness, etc. This article reviews food packaging materials prepared from different raw materials, as well as biodegradable food packaging materials with different functions developed to meet the diverse needs in the market. It also focused on the research progress, degradation mechanism and industrialization prospects of natural polymer (starch, cellulose, lignin, protein)-based food packaging materials and synthetic polymer (polylactic acid, polyvinyl alcohol)-based food packaging materials. Among them, natural polymer-based food packaging materials are rich in sources, harmless to the human body, and have the advantages of good formability and strong permeability resistance, while synthetic polymer-based food packaging materials have better transparency and mechanical properties, and both are naturally occurring in nature. All can be naturally degraded. Finally, it pointed out the challenges faced in the current research on biodegradable food packaging materials and that in future development, more emphasis should be placed on recycling and degradable comprehensive utilization, and more efforts should be made to prepare new biodegradable materials with excellent antibacterial, moisture-proof, breathable and other multi-functional properties. Degradable food packaging materials to meet different types of food packaging needs.
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GAO Bo-nan, YI Xiao-qian, ZHANG Ya-juan, ZHAO Qian, LIU Hong-li, WANG Shi-rong, LI Xiang-gao
2025,42(6)
Abstract:
E-paper display has become an important forefront display technology field, because it has the advantages of real time updating like electronic display device, energy saving and healthy for human like traditional paper. E-paper based on the electrophoretic principle of nanoparticles in microcapsules is the research focus of reflective display technology. In this paper, the electrophoretic display dispersion liquids were prepared by that nano-titanium dioxide and manganese ferrite black spinel particles were dispersed in Isopar L, and the microcapsules were prepared by the through complex coacervation reaction on the surface of the dispersion droplets with gelatin and arabic gum used as shell materials. The microcapsules with the high strength and monodispersity are obtained under the optimized conditions in the dispersion system composed of 5.0 g electrophoretic liquids, 100 mL gelatin-arabic gum solution and 0.2 g sodium dodecyl sulfate with an initial gelatin solution pH = 7. The reaction is carried out after the pH value of the dispersion system is adjusted to 4.7 after maintaining dispersion for 20 min, then the cross-linking reaction is operated through adding a moderate amount of glutaraldehyde into the system under the ice bath. The microcapsules have an average shell thickness of 283 nm and can maintain a good shape after drying at 80 ℃ for 30 min. The yield of microcapsules is 73%, of which 30-50 μm products for 47%. The prototype display device was prepared by coating a mixture of microcapsules and polyvinyl alcohol in a ratio of 15:1 (w/w), as well as glycerin as the plasticizer on the PET-ITO substrate, and the device exhibits that the white and black state is 17.9% and 3.5%, reflectivity, and a response time of 570.5 ms under a ±25 V electric field.
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WANG Ying-ying, ZHU Yi, WANG Peng-fei
2025,42(6)
Abstract:
Aiming to prepare industrial material of ZSM-5 zeolites with strong hydrophobicity, stable performance and adaptability to varied working conditions for adsorption and purification of volatile organic compounds (VOCs), high-silica ZSM-5 zeolites with different morphologies were synthesized by adding ammonium acetate in a hydrothermal system, using ZSM-5 zeolites with silicon to aluminum ratio of 300 as the seed crystal. The influence of ammonium acetate addition on morphologies and hydrophobicity of high-silica ZSM-5 zeolites were investigated by XRD, SEM, XRF, N2 adsorption-desorption and water contact angle characterization methods. The influence of morphologies on hydrophobicity and toluene adsorption performance of ZSM-5 zeolites were investigated on static and dynamic adsorption experimental device. The results show that high-silica ZSM-5 zeolites with coffin-shaped, hexagonal-plate and rod-shaped morphology can be obtained by adjusting the amount of substance ratio of ammonium acetate to be 0, 0.05 and 0.1 times of SiO2, respectively. Among them, the high-silica ZSM-5 zeolites with rod-shaped morphology (ZSM-5-0.1) had the strongest hydrophobicity with a hydrophobic index of 8.36 and a water contact angle of 35.05°. The water vapor and toluene adsorption of ZSM-5-0.1 were least affected by humidity: under relative humidity of 50%, 80% and 100%, the dynamic saturated adsorption capacity of water vapor is 0.66%, 0.92% and 1.15%, respectively; in addition, Under the humidity of 80%, the GHSV of 10000h-1, the breakthrough adsorption capacity of ZSM-5-0.1 for toluene at mass concentration of 4000 and 2000mg/m3 is basically equivalent with values of 0.053 and 0.051g/g, respectively, and the diffusion rate of toluene in ZSM-5-0.1 was least affected by water vapor, and its diffusion rate constants were 0.145 and 0.133 min-1, respectively, which were consistent with the Y-N model.
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WANG Yan-lei, YANG pan-pan, YANG jian-jun, WU qing-yun, WU ming-yuan, ZHANG jian-an, LIU jiu-yi
2025,42(6)
Abstract:
Phenolic compounds from natural plants have good antibacterial effect on drug-resistant bacteria. Syringic acid (SGA) is a typical representative of natural phenolic acids. In this paper, waterborne polyurethane films (SWPU) were prepared by quaternization reaction of isophorone diisocyanate (IPDI), polytetrahydrofuran glycol (PTMG) and 1mai 4-butanediol (BDO) with chain extender 3-dimethylamino-1-mino-2-propanediol (DMAD) and SGA. SWPU films were characterized by FTIR and 1H-NMR. The nano-size, DSC, mechanical properties, water contact angle and antibacterial properties of SWPU films were analyzed. The results showed that the glass transition temperature of SWPU-3 film prepared at n (DMAD): n (BDO) = 5:1 was -29.02 ℃, the water contact angle was 79.1 °, the tensile strength was 35.6MPa, the elongation at break was 987.7%, and showed more than 99.1% antibacterial activity against Escherichia coli and Staphylococcus aureus. The antibacterial zone experiments show that the antibacterial mechanism of the film is based on contact killing rather than the release of antibacterial components, and the sample film has environment-friendly characteristics.
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2025,42(6)
Abstract:
CM-LAP, P-LAP were prepared by chloroacetic acid method and sodium phosphate method, respectively. The viscosity, solubility, molecular weight, monosaccharide composition, and morphology were determined to explore their physicochemical properties, with verification by infrared and nuclear magnetic resonance. In vitro antioxidant experiments and evaluation of the protective effects against oxidative damage induced by H2O2 on HepG2 cells were conducted to assess the antioxidant activity of LAP, CM-LAP, and P-LAP. The results show that the modified polysaccharides showed reduced viscosity, increased solubility, unchanged monosaccharide composition but significant changes in monosaccharide molar ratios. Both crystalline and amorphous structures were observed for LAP, CM-LAP, and P-LAP, with alterations in surface morphology after modification, while the triple helix structure remained unchanged. Thermal stability was enhanced, with residual carbon rates at 550 ℃ recorded as 22.76%, 40.90%, and 30.38% for LAP, CM-LAP, and P-LAP, respectively. In addition, infrared and nuclear magnetic resonance spectroscopy confirmed the successful preparation of CM-LAP and P-LAP. The evaluation of their in vitro antioxidant activity showed that the modified polysaccharides enhanced LAP ability to DPPH and -OH scavenge free radicals. LAP, CM-LAP, and P-LAP were able to reduce the MDA levels induced by H2O2, with MDA levels decreasing from 6.768 nmol/mg protein to 4.029, 3.517, and 3.772 nmol/mg protein, respectively. Furthermore, they increased the activities of SOD and GSH-Px, with SOD activities increasing from 6.086 U/mg protein to 6.991, 7.474, and 7.192 U/mg protein, and GSH-Px activities increasing from 7.019 U/mg protein to 8.017, 8.591, and 8.227 U/mg protein. These results demonstrate that carboxymethylation and phosphorylation modifications can enhance the physicochemical properties and antioxidant activity of Lavandula angustifolia polysaccharides, highlighting their potential applications.
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Photocatalytic hydrogen production performance of Ni0.4Cu0.6/POM-CN for hydrolysis of ammonia borane
Li Rong, KANG Meng-qi, CHEN Xin-shun, FENG Jia-jia, XU Li-xin, WAN Chao
2025,42(6)
Abstract:
Carbon and nitrogen nanosheets (CN) were synthesized by the molten salt method using melamine as the precursor and lithium chloride as the templating agent, and the cyclic phosphonitrile-containing polymer carrier (POM) was synthesized by the solvothermal method using hexachlorotrisphosphononitrile and 2,6-diaminopyridine as the reactant, tetrahydrofuran as the solvent, and a certain amount of triethylamine was added to it, and the two were mixed to obtain the composite carrier with a two-dimensional laminar structure using the molten salt method and solvothermal method (POM-CN), and a series of NiCu/POM-CN catalysts were prepared by impregnation reduction method using POM-CN as the carrier. Based on TEM, SEM, XPS, XRD, FT-IR and UV-vis DRS characterization, the microstructures of the catalysts were analyzed, and the effects of the catalyst morphology and structure as well as photocatalysis on the hydrolysis performance of ammonia-borane (AB) for hydrogen production were investigated. The experimental results showed that under the irradiation of visible light, the TOF value of Ni0.4Cu0.6/POM-CN catalyst was as high as 1774.6 h-1, which was 2.8 times higher than that of the TOF value under the condition of no visible light (618.1 h-1), indicating that the catalyst had a good photocatalytic performance. Meanwhile, the catalyst still maintained a high catalytic activity after five cycle tests. In addition, the activation energy of the Ni0.4Cu0.6/POM-CN catalyst for the reaction in the presence of light was 52.75 kJ?mol-1. The characterization results indicated that the catalysts possessed excellent catalytic activity thanks to the POM-CN composite carrier, the alloying effect of the NiCu bimetal, and the strong interactions between the metal and the carrier.
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HU Cong-yi, LAN Yun-hong, XIAO Long-qiang, HOU Lin-xi
2025,42(6)
Abstract:
The ring-opening copolymerization reaction of epoxides with cyclic anhydride (ROCOP) plays a crucial role in the preparation of polyesters. In this thesis, the amino-modified metal-organic framework material UiO-66-NH2 was synthesized, and the ring-opening copolymerization of epoxide with cyclic anhydride catalyzed by the UiO-66-NH2/Lewis acid-base binary system was investigated. It was shown that the UiO-66-NH2/PPNCl catalytic system presented the best catalytic performance, and the ester bond content in the prepared polyester was up to 99.9%. Meanwhile, the effects of temperature, catalyst ratio and co-catalyst on the ring opening copolymerization reaction were investigated. The kinetic study showed that the reaction was a first-order kinetic reaction with an apparent activation energy Ea of about 66.51 kJ?mol-1. The cycling test proved that UiO-66-NH2 had good physical and chemical stability, and could be reused 3 times without decreasing the catalytic activity.
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JIN Mingyi, WU Jinyu, JIANG Rundong, ZHANG Genlin, XIU Zhilong, Dang Yanyan
2025,42(6)
Abstract:
Walnut green husk obtained by peeling green walnuts was used as raw material. A two-phase salt precipitation extraction method was employed to extract its active ingredients, sequentially using petroleum ether (PE), dichloromethane (DCM), ethyl acetate (EA), and n-butanol (n-BuOH) as solvents to obtain fraction 1 to fraction 4 through extraction and separation. Ultra high performance liquid chromatography quadrupole electrostatic field orbital trap mass spectrometer (UHPLC-Q-Exactive) was utilized to identify the compound compositions of the fractions. Antibacterial experiments against E. coli, S. aureus, and B. subtilis were conducted to investigate the influence of browning and non-browning of walnut green husk on the fractions and antibacterial activity of the extracts. Network pharmacology and molecular docking methods were employed to analyze the correlation between extract compositions and antibacterial activities, exploring the main antibacterial components and their mechanisms in walnut green husks. Results showed that the antibacterial activities of fraction 2 (DCM extract) and fraction 3 (EA extract) were insignificantly affected by browning of walnut green husk (P > 0.05), whereas the antibacterial activities of fraction 1 (PE extract) and fraction 4 (n-BuOH extract) were significantly affected by browning of walnut green husk (P < 0.05). Compared to non-browning walnut green husk, the antibacterial activities of fraction 1 decreased by 100%, 36.58%, and 39.53% against the tested bacteria, while those of fraction 4 increased by 128.49%, 53.32%, and 78.50%, respectively. The reduced antibacterial activity after browning of walnut green husk was correlated with decreased content of quinone compounds (2-hydroxy-1,4-benzoquinone, 2-hydroxy-1,4-naphthoquinone,1,4-naphthoquinone and hydroquinone), flavonoid compounds (quercetin pentaacetate, naringenin and isoquercetin), and steroid compounds (prsapogemin A and 3,5-dihydroxycholestan-6-one), whereas enhanced antibacterial activity was associated with increased content of quinone derivatives (tetrahydroxyquinone, menaquinone and compound d ) and alkaloids (minovincinine). Fraction 1 and fraction 4 mainly exert antibacterial effects through negative regulation of apoptosis processes, binding to the same proteins, and enzyme binding pathways.
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MA Xiao-qi, WANG Ke-xin, YU Xiao-shuai, XIN Guang, Wang Peng, XIAO Zhi-gang
2025,42(6)
Abstract:
In order to investigate the effect of linoleic acid (LOA) combined with rice glutenin (RG) on the molecular structure and physicochemical properties of extruded rice starch (ERS), ERS-RG-LOA with 10% RG addition (by mass of RS, hereinafter the same) and different LOA additions (by mass of RS, hereinafter the same) were prepared by a twin-screw extruder, with rice starch (RS), RG and LOA as the raw materials. ternary complexes, the effects of LOA addition on the molecular structure and physicochemical properties of ERS-RG-LOA ternary complexes were investigated based on the characterisation and testing by XRD, FTIR, low-field nuclear magnetic resonance (LF-NMR), DSC, rheometer, fast viscosity analyser, SEM, and laser particle sizer. The results showed that compared with ERS and ERS-RG prepared by adding RG only, the short-range ordered structure of ERS-RG-LOA ternary complexes was significantly increased by the addition of LOA, the relative crystallinity increased, the viscoelasticity, the thermal stability and the binding ability of water molecules were enhanced, the pasting temperature was increased, a denser microstructure was presented, and the peak viscosity was reduced. The relative crystallinity of ERS-RG-LOA ternary complex ERS-RG-1% was 14.54%±0.51%, the degree of short-range order (DO) was 0.971±0.005, the energy storage modulus was significantly higher, and the water-bound (1.77%±0.06%) and weakly-bound (4.39%±0.01%) water contents increased. content increased. The water absorption index (WAI) of the ERS-RG-LOA ternary complex did not change significantly compared to ERS-RG, but the water solubility index (WSI) was significantly lower.
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SUN Zhekai, ZHANG Zhihong, DU Xiaogang
2025,42(6)
Abstract:
Ce1Mn3 precursor was prepared by co precipitation method using cerium nitrate and manganese nitrate as raw materials, NaOH as precipitant. The composite metal oxide catalyst Ce1Mn3-x/γ-Al2O3 was prepared by mixing and calcining with nano alumina gel powder. X is the mass of Ce1Mn3 precursor powder (g), with values of 1, 3, 5, 7, and 9, and a total raw material mass of 10 g. The catalyst was characterized by XRD, BET and SEM, and its catalytic degradation performance on gaseous low concentration ethyl acetate (volume fraction 1000 ppm) was investigated by a fixed bed reactor. The effect of water vapor on the reaction and 48 hour catalytic stability were also explored. Compared with Ce1Mn3, the specific surface area of Ce1Mn3-x/γ-Al2O3 increases from 38.55 m2/g to 60.03~20.79 m2/g, and the number of mesopores significantly increases. Ce1Mn3 oxide is bound to the surface of γ-Al2O3, and the exposed Ce1Mn3 oxide particles have a finer and more dispersed morphology. When the mass ratio of Ce1Mn3 to alumina sol dry powder is 7:3, Ce1Mn3-7/γ-Al2O3 has the highest catalytic activity. Under the condition of space velocity (GHSV) of 15000 mL/(g·h), the degradation rate of ethyl acetate reaches 90% at 164 ℃ (T90). Both the carrier γ-Al2O3 and the addition of water vapor are beneficial for the degradation of ethyl acetate at low temperatures (<120 ℃), promoting the generation of degradation intermediates acetic acid and ethanol, resulting in a decrease in the final T90. In a reaction atmosphere test at 180 ℃ for 48 hours without water vapor, the Ce1Mn3-7/γ-Al2O3 catalyst can consistently maintain a degradation rate of over 99% for ethyl acetate.
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LU Yue-jing, LAI Xiao-juan, SHI Hua-qiang, LI Hai-bin, CHEN Jia-li, WANG Lei, DANG Zhi-qiang
2025,42(6)
Abstract:
Carrying agents in solid acid systems are susceptible to dilution by formation water during transport to the formation, resulting in poor acidification of solid acids. Based on this, in this paper, a hydrophobic associative thickener (PAAOD) with dilution resistance was prepared by aqueous solution polymerization using acrylamide (AM), 2-Acrylamido-2-methylpropane sulfonic acid (AMPS), methylacryloxyethyl trimethyl ammonium chloride (DMC) and octylpolyoxyethylene ether methacrylate (OEMA). as raw materials. The structure of PAAOD was characterized using Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance hydrogen spectroscopy (1H NMR). The dilution resistance, shear resistance and retardation properties of PAAOD were investigated by means of performance tests such as apparent viscosity, rheology and acid rock reaction rate. The results of the study show that: The monomers were all involved in the polymerization and the PAAOD polymerization was successful. The apparent viscosity of 0.8 wt% PAAOD was maintained at 63.39 mPa·s after shearing for 2 h at 130°C and a shear rate of 170 s-1, showing good temperature and shear resistance; The PAAOD solution was subjected to dilution resistance experiments, and the rate of viscosity loss was 43.75 % for twofold dilution at room temperature (25°C) and 44.80 % for twofold dilution at high temperature (90°C), which showed good resistance to dilution, and after standing for a certain period of time, the loss of viscosity of PAAOD was reduced with a certain degree of restorative properties; The acid rock reaction rate of PAAOD at 130°C was 0.06 mg/(cm2·s), which proved that the polymer had good retardation properties. Therefore, thickening agent PAAOD has good application prospects in deep and ultra-deep wells.
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DONG Zilong, YU Xiaolong, CHEN Zeyuan, ZHAO Pujie, WANG Fang, ZHU Xinbao
2025,42(6)
Abstract:
A trifunctional epoxy resin, N-phenyl-p-phenylenediamine triglycidylamine (ADPTGA), was synthesized by a two-step process using N-phenyl-p-phenylenediamine (ADPA) and epichlorohydrin (ECH) as raw materials, and benzyltriethylammonium chloride (TEBAC) as a catalyst.The structural composition of ADPTGA was characterized by FTIR and 1HNMR. ADPTGA was added to bisphenol A epoxy resin (E-51) and cured with diaminodiphenylmethane (DDM) as the curing agent to investigate the effect of ADPTGA addition (calculated by E-51 quality, hereinafter) on the performance of the composite epoxy resin system based on the viscosity determination, storage stability test, mechanical property test, TGA, SEM and other tests. The curing kinetics of E-51/DDM (phr) and ADPTGA/E-51/DDM systems were analyzed by non-isothermal DSC tests. The results showed that the epoxy value of ADPTGA was 0.68 mol/100 g, and the viscosity was 5~6 Pa·s at 25 ℃. When the ADPTGA was added at 10%, the cured product (10 phr) of ADPTGA/E-51/DDM system had the best performance, and its tensile strength, elongation at break, flexural strength, and impact strength were increased by 45.8%, 54.5%，22.8% and 41.2%, respectively, compared with that of phr , and the glass transition temperature (Tg) increased by 5.5 ℃; the results of the curing process of phr and 10 phr were in accordance with the two-parameter autocatalytic (?esták-Berggren) model, and the curing process was unaffected by the rate of temperature increase (5~20 ℃/min).
