Abstract:Basic amino acids (BAA) like L-arginine (L-Arg), L-lysine (L-Lys) and L-histidine (L-His) with final mass concentrations of 1 g/L, 3 g/L or 5 g/L were added to 120 g/L whey protein solutions, respectively, and then these samples were thoroughly homogenized and then heated at 90 ℃ for 30 min to prepare heat-induced gels. The work was targeted to investigate the feasibility of BAA modify the functional properties of the gel. The physicochemical changes, texture profile analysis, water sorption and gel electrophoresis were employed to characterize the pH of the gel forming solution, the morphology, texture, hydration properties and leaching protein fractions of the gels. The result indicated that L-Arg, L-Lys or L-His both significantly increased the pH of gel-forming solutions, and whey proteins with treated with BAA can be formed a heat-induced gel with no visible difference in color, morphology and \"self-standing ability\". L-Arg and L-Lys also significantly increased the springiness, cohesiveness, chewiness and resilience of the gel but dramatically decreased its hardness and gumminess, whereas L-His has no dominant influence on the changes of textural properties of the gels (except decreased gumminess). In addition, BAA is incapable of favorably improving water holding capacity but substantially enhancing swelling ratio of the gel, also notably inhibiting protein fractions leaching from the gel, which promoting the integrity of the whey protein gel matrix.

Abstract:Rheology modifier, which mainly to increase the shear force and viscosity is a key additive to improve rheology of drilling fluid so that the drilling fluid has a higher dynamic plastic ratio and better shear dilution. With the development of ERD, high-angle directional well, deep water well, ultra-deep water etc., it is difficult for drilling fluids to have effective rheology in complex formations which often occurs problems such as insufficient viscosity and shear, excessive degradation and even loss the capacity of suspension and carrying. Especially, the problem of insufficient wellbore cleaning often appeared in the large displacement wells and complex wells. This article mainly introduces the research progress and application of existing rheology modifiers for drilling fluids. According to the type of drilling fluid, it is divided into: rheology modifier for typical drilling fluid, rheology modifier for flat-rheological drilling fluid and rheology modifier for other drilling fluid. Firstly, the author compare and evaluate the ability of increase viscosity and cutting, temperature resistance, environmental protection and price advantage of different rheology modifier for drilling fluids and then proposed suggestions for the future development of rheology modifier in order to provide information and references.

Abstract:Metal nanomaterials have unique properties than their bulk materials. The directional growth of macro scopically area metal nanostructures cannot be prepared because of the limitation of traditional synthesis methods. Solid - state ionics method can prepare ideal nanostructures by effectively controlling the morphology of surface, length, degree of order and surface roughness of nanostructures. In this paper, the preparation mechanism of solid- state ionics method was reviewed at first. The preparation process of single metal and the effects of electric field strength, electric current and different fast ionic conductor films on the morphology and order of nanostructures were introduced in the second. Then, we summarized the preparation techniques of different alloy nanostructures and composite nanostructures. By comparing the limiting concentrations of different nanostructures as surface enhanced Raman scattering(SERS) substrate, various factors affecting the detection sensitivity were summarized. Finally, the problems and potential applications of followed by summary and outlook for the research in the field.

Abstract:Enzyme mimics of nanomaterials have been used in Fenton reactions as heterogeneous reagents to degrade organic pollutants in water due to their advantages such as high stability, low cost, and easy preparation. This article briefly summarizes the mechanism of catalytic degradation of organic pollutants by nano-mimetic enzymes based on Fenton reaction, and focuses on the recent degradation of dyes, phenols, antibiotics, and pesticides in drinking water by mimic enzymes based on Fenton reaction. The latest research progress of organic pollutants, and the future challenges and application prospects of this method are prospected.

Abstract:Inorganic hydrated salt phase change composites have attracted increasing attention over the world because of their excellent thermodynamic properties and abundant reserves. As one kind of important low-temperature phase change materials, they are widely adopted to prepare room temperature composite phase change materials, which display a promising prospect and in line with the low-carbon energy-saving policies. The characteristics and progresses of typical types of porous carrier-supported inorganic hydrated salt phase change composites have been reviewed here. Moreover, the shortages and challenges of the inorganic hydrated salts are revealed, and the future research directions are also discussed.

Abstract:Microbial fuel cells (MFCs) are a type of biological electrochemical hybrid system that utilizes the oxidative metabolism of microorganisms to convert the energy from organic or inorganic compounds into electricity. MFCs with saving energy, reducing sludge generation and energy conversion has been widely concerned by researchers. Electrogenic microorganisms are the central of MFCs system because of screening and cultivation of high-efficiency electrogenic microorganisms playing an important role in promoting the electricity-producing performance of MFCs. Therefore, the electronic transfer mechanism, types of electrogenic microorganisms as well as the factors affecting the electric-producing microorganisms are summarized, and the latest research progress of the anode electrogenic microorganisms is reviewed. Additionally, the future research is prospected from the perspective of microorganisms to provide guidance for the application of electrogenic microorganisms in MFCs.

Abstract:A novel composite fluorescent probe (SCDs) was synthesized by forming a covalent bond be tween mes-oporous SBA-15 functionalized with 3-glycidyloxypropyltrimethoxysilane (SBA-15/560) and mul-ti-hydroxyl carbon dots (CDs). The composite probe was characterized with TEM, FT-IR and XPS analysis, the results showed that the multi-hydroxyl CDs were successfully assembled into the SBA-15/560, indi-cating that the obtained SCDs nanocomposite probe not only maintained excellent fluorescence proper-ties of multi-hydroxyl CDs but also highly ordered structure of mesopores. Subsequently, the composite fluorescent probe was used for 2,4,6-trinitrophenol (TNP) detection. It was found that the composite probe had a selective and sensitive response towards TNP. The results of the TNP assay show that the composite fluorescent probe exhibits two wide linear regions in the range of 1~8 and 10~70 μmol/Lwith a low limit detection of 0.17 μmol/L. The results confirmed that the composite probe could be used as a promising sensor for TNP detection.

Abstract:A fluorescent probe for the detection of Cu2+ was synthesized using 2-picolinic acid and (E)-2-(benzo[d]thiazol-2-yl)-3-(6-hydroxynaphthalen-2-yl) acrylonitrile after esterification and identified by 1H NMR, 13C NMR and HRMS. The fluorescence performance test results show that the fluorescent probe can recognize Cu2+ with high sensitivity and high selectivity. The detection concentration ranges of Cu2+ is 0 ~ 200 μmol/L, and the detection limit is 17 nmol/L. This probe has been successfully used to detect the content of Cu2+ in wine and beer, and its recovery rate is 90.00% ~ 108.30%. This study provides a reference for the development of Cu2+ detection methods with good recognition performance and strong practicability.

Abstract:Lauric acid (LA), myristic acid (MA), palmitic acid (PA) and stearic acid (SA) were used as the main phase change materials, multi-wall carbon nano-tube (MWNT)for the framework. All the composite materials were prepared by melt-blending method. Physical Properties, temperature field distributions, heat store and release time, thermal conductivities and resistivities of composites as form-stable phase change materials were characterized by tablet pressing machine, infrared thermal image, thermal conductivity instrument and resistivity meter. The results show that molding pressure and contents of MWNT had no distinct influence on density of composites phase change materials. The four acidic organic matter, adding MWNT with the mass fraction of 24%, 19%, 25% and 26%, had no leakage occurred. Although the temperature field distribution was more uniform after molding, and has good hydrophobicity, the heat storage rate slows down. The thermal conductivities of the composite materials were respectively 2.7 ~ 3.7 times, 2.7 ~ 4.5 times, 2.7 ~ 4.4 times and 1.7 ~ 2.4 times than the corresponding pure organic acids. When the pressure changed from 1MPa to 11MPa, the resistivity of the composite materials decreased by 75.9%, 76.5%, 72.2% and 74.0%, respectively. The fitting of the change curve of the resistivity of the material showed a high correlation between them. It shows that the prepared composite phase change material has good hydrophobicity, thermal and electrical conductivity.

Abstract:ZnO nanoparticles (Nano ZnO) were synthesized via solution combustion method with flavone from Ampelopsis grossedentata as raw material and characterized by FTIR, XRD, SEM and EDS. The antioxidant and bacteriostatic properties of the greenly synthesized Nano ZnO were evaluated by Brand-Williams method,inhibition zone method and minimum inhibitory concentration method. The results indicated that the greenly synthesized Nano ZnO had a hexagonal wurtzite structure with good crystallinity and its average grain size was about 32.7 nm. Moreover, the Nano ZnO had good antioxidant activity. When the mass concentration of Nano ZnO was 2.5 g/L, the scavenging rate of 1,1-diphenyl-2-picrylhydrazyl free radical (DPPH·) reached 98.24 %. Furthermore, the antibacterial activity of greenly synthesized Nano ZnO against Staphylococcus aureus was higher than that of traditional chemically synthesized Nano ZnO. The minimum bacteriostatic concentration of greenly synthesized Nano ZnO was 1.00 g/L, while that of chemically synthesized Nano ZnO was 1.50 g/L.

Abstract:Polyhexamethyleneguanidine hydrochloride (PHMG) was prepared by melt polycondensation of ethylenediamine (GHC) and guanidine hydrochloride (GHC). Then double bond functionalized PHMG (MPHMG) was prepared by reacting PHMG with glycidyl methacrylate (GMA)PHMG and the successful synthesis of MPHMG was characterized by FTIR, 1H NMR, 13C NMR, and UV. Blending MPHMG, photoinitiator, and double bond-terminated non-ionic water-based polyurethane (NU). After water volatilized, UV-cured the mixture to obtain antibacterial coating PNU. The structure and properties of PNU film were characterized by FTIR, TGA, tensile, water absorption and antibacterial performance tests. The results shown that MPHMG increased the hydrogen bonding in the soft segment and the content of hydrophilic groups of PNU films. When the MPHNG content in the film was 2.0%, the T30% and T50% increased by 7.3 ℃ and 12.6 ℃, the tensile strength increased by 1.6MPa and the water absorption increased by 6.8%. The antibacterial test showed that when the MPHMG content in the film was more than 1.0%, the antibacterial rate against S. aureus and E. coli could reach more than 99.8% after the film exposed to bacteria for 2 hours.

Abstract:Polyvinyl alcohol/chitosan (PVA/CS) composite hydrogel were prepared by freeze-thaw method and soaking sodium citrate (Na3Cit) aqueous solution. The structures and morphologies were characterized by FTIR, XRD, DSC and SEM, and the mechanical properties were tested. The results showed that PVA single network hydrogel had a mesh size between 1.5 μm and 8.2 μm, free water content (FW) of 76.2% and effective cross-linking density (v0) of 0.0288 mol/L. After introducing CS into PVA single network and soaking Na3Cit, the mesh size and FW of the prepared PVA/CS composite hydrogel decreased to 1.5 μm and 1.45%, and the v0 increased to 0.421 mol/L. While the tensile strength and compressive strength were 9.3 MPa and 16.6 MPa, respectively. This was attributed to the synergistic cross-linking of hydrogen bonds and ionic bonds of composite hydrogels. At the same time, the composite hydrogel exhibited excellent anti-fatigue and swelling-resistant properties. The compressive strength and toughness of the composite hydrogel after 10 successive compression tests were 88.1% and 84.3% of their original values. Furthermore, the tensile strength after reaching a swell-equilibrium in deionized water was 4.3 MPa.

Abstract:Abstract:The application of nano-TiO2 in the lubricating oil industry was seriously restricted because of its low dispersion stability. In this paper, tetrabutyl titanate (TBT) was used as the initiator to initiate the ring opening polymerization of δ-Valerolactone (DVL) at 60 ℃ to produce four arm star shaped polyvalerolactone (4-PVL), and then the oil soluble nano-TiO2 was hydrolyzed under acid condition. The Scanning electron microscopy (SEM) showed that the product nano-TiO2 had spherical particles of uniform size, with an average diameter of about 20-30 nm. This modification process was feasible, which was demonstrated by Fourier Transform Infrared Spectrometry (FT-IR), termogravimetric analysis (TG) and X-raw Diffraction (XRD). It had been proved that the dispersion stability of nano-TiO2 in base lubricating oil had been significantly optimized which could keep the stability of dispersion for 2 months without obvious precipitation. Lubricant with nano-TiO2 additive showed lower friction coefficient and wear spot diameter due to the “bearing effect” and “filling and repairing effect”. The friction coefficient of composite nano-base oil varied from 0.049 to 0.025, and the average wear spot diameter decreased from 1028 μm to 979 μm. Compounded nano-TiO2 lubricant exhibited excellent anti-wear and self-repairing performance.

Abstract:A red blood cell membrane bionic nano-drug loading system (Au-Cur@RBC) was designed and developed to improve the shortcomings of curcumin, such as poor stability in water, poor absorption and fast metabolism, etc. The anticancer drug curcumin is loaded on the surface of small-sized gold nanoparticles that are favorable for encapsulation through hydrophobic interaction, and then the drug-loaded nanoparticles are encapsulated in erythrocyte membrane vesicles by physical extrusion. The results show that the prepared gold nanoparticles have high uniformity, good dispersibility, and an average particle size of 13.18 nm. The encapsulation rate of curcumin in curcumin nanoparticles is 86.85%, and the drug loading rate is 20.25%. The loading of gold nano-particles can significantly improve the stability of curcumin, and gold-curcumin nanoparticles still retain 52% of curcumin after being stored in an aqueous solution for 30 days. At the same time, the results of dark field mi-croscopy show that the coating of red blood cells has improved the ability of Au-Cur@RBC prepared to refract and diffract the incident light of the dark field microscope, thereby presenting a clearer image. The above results indicate that the prepared bionic nanoparticles show potential for application in cancer treatment and imaging.

Abstract:A novel fluorescence probe NH1 for detection hydrazine was synthesized based on 4- bromo-1, 8-naphthalimide, P-aminophenol and 3-bromocinnamic acid. The probe exhibited good specific response to hydrazine. The structure was confirmed by 1H NMR and MS. The fluorescence intensity at the maximum emission wavelength (λem = 535 nm) of the probe NH1 was increased with the addition of hydrazine. And it showed a good linear relationship. The linear correlation coefficient was R2 = 0.99. The detection limit was 0.23 μmol/L. In addition, the probe has good selectivity and anti-interference ability, and can adapt to a large pH range from 4.5 to 10.5. NH1 successfully stained the cells and detected hydrazine in cells.

Abstract:According to schiff base reaction, a novel pyrene-o-vanillin Cu(II) fluorescence sensor TM was prepared with pyrene as fluorophore and hydrazine as linker. Its structure was characterized by melting point, 1H NMR, 13CNMR, IR, MS and elemental analysis. Sensor TM had good UV, fluorescence and colorimetric response to Cu(II) in acetonitrile system, and the response time was 12 min. It is not interfered by other metal ions, and can recognize Cu(II) visually and reversibly. The detection limit of TM to Cu(II) was calculated to be 0.48 μmol/L according to the fluorescence titration. Sensor TM had orange solid fluorescence, but its fluorescence in acetonitrile solution was very weak. By comparing the fluorescence intensity after adding water or Cu(II), the aggregation-induced emission (AIE) recognition mechanism of TM was discussed with the aid of UV and fluorescence titration as well as quantum chemical calculation. Sensor TM could be used for detecting Cu(II) in tap water with a recovery of 91.2%~107.3% and relative error of 6.3%~8.8%. High selectivity and rapid response to Cu(II) should make TM as a new AIE-type fluorescence sensor for the detection of Cu (II) in actual samples.

Abstract:ZrO2/Fe3O4 carrier was prepared by the method of co-precipitation and SO42- was loaded successfully as the active center by dipping. The composition, structure, surface acidity and magnetic properties of the catalyst were characterized by FT-IR, EDS, XRD, etc. The magnetic solid acid catalyst was applied to the preparation of polyols from the ring-opening of epoxy soybean oil by glycerinum.The effects of catalyst dosage, temperature and reaction time on the ring-opening conversion and hydroxyl value of the product were investigated. The experimental results showed that the best reaction conditions were when the catalyst dosage is 1% of the mass of epoxy soybean oil, the reaction temperature is 80℃, and the reaction time is 6h. Under this condition, the ring-open conversion is more than 99%, and the hydroxyl value of the product is 365mgKOH/g.

Abstract:Cyclization of CO2 (or CS2) coupled with trifluoromethylation was carried out taking allylamine as substrate, Togni's reagent Ⅱ(1-(trifluoromethyl)-1,2-benziodoxol-3(1H)-one) as source of trifluoromethyl, single-site copper of highly stable metal-organic framework (MOF) HKUST-1〔based upon the Cu2(O2C)4 bis-paddelwheel, the simplest molecular structure of catalyst is Cu2(BTC)4/3·2H2O, and the relative molecular weight is about 439.28 g/mol〕as catalyst. The factors affecting the reaction such as basic additive, solvent, reaction temperature, loading amount of HKUST-1 were optimized. The results showed that allylamine substrates bearing different substituent groups could been transformed into bioactive trifluoromethylated 2-oxazolidones in yields of 69%~87% under the optimal conditions of 5% HKUST-1, CO2 pressure 101.325 kPa , reaction temperature 45 ℃. The possible mechanism of the reaction was verified by free radical trapping experiment. The catalyst HKUST-1 could be easily recovered and reused for at least five times and still had good catalytic activity and crystal structure. When CS2 was used as C1 source instead of CO2, the analogue of central nervous system agent, trifluoromethylated 2-thiazolidinethione could be obtained, reflecting the durability of this heterogeneous catalytic system against sulfur-poisoning effect.

Abstract:In order to develop the flavor precursor of pyrazine ester, 2,5-dimethylpyrazine N-oxide and thiophene methyl acrylate were used as raw materials, and the target compound thiophen-2-ylmethyl-3-(3,6-dimethylpyrazine-2-yl)acrylate N-oxide was synthesized by coupling reaction with the catalysis of palladium acetate. The target compound was characterized by 1H NMR, 13C NMR, IR, HRMS, and its thermal property was measured by thermogravimetric-differential thermogravimetry (TG-DTG) and pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). The results show that degradation temperature of the target compound is at 170 oC, and the main thermal weight loss range is 170 oC-875 oC. The maximum weight loss rate is 257 oC, and the total weight loss is 76.5%. Under the conditions of inert and oxidative atmosphere at 300 oC-900 oC, 11 volatile products are identified, and the main characteristic aroma compounds are alkylpyrazines, 2-methylthiophene and 2-thiophene methanol. In the oxidative atmosphere, there are more types of pyrolysis products, and their relative contents are higher than in inert atmosphere. According to the types and relative contents of the main pyrolysis products, the possible pyrolysis mechanism of the target compound is revealed. The optimum addition amount of the target compound in cigarette is 2 mg/kg.

Abstract:A HPLC method was developed for the simultaneous analysis and determination of sulfamethazine and p-hydroxybenzoic acid in solution. The results showed that when acetonitrile-phosphoric acid aqueous solution (pH = 3.15) was used as the mobile phase and the volume ratio was 18∶82, sulfamethazine and p-hydroxybenzoic acid were quickly separated in 9 minutes. The RSD values of precision and stability of the method are less than 2%. The average recoveries of sulfamethazine and p-hydroxybenzoic acid are 98.73% and 98.90%, respectively. On this basis, the sulfamethazine-p-hydroxybenzoic acid cocrystal was prepared by the solution method. At 298.15K and 303.15K, the ternary phase diagram of the cocrystal in acetonitrile solvent was established. The XRD, DSC, and SEM were used to characterize the sulfamethazine and p-hydroxybenzoic acid and the partially dried solid phase at 298.15K. The results show that the phase diagram of the sulfamethazine-p-hydroxybenzoic acid-acetonitrile system is a symmetrical phase diagram. As the temperature increases, the sulfamethazine-p-hydroxybenzoic acid cocrystal region increases, which is conducive to the formation of the cocrystal .

Abstract:Bagasse lignin (BL) was extracted rapidly from bagasse with p-toluenesulfonic acid (p-TsOH) in one step. Using single factor test, the effects of extraction time, extraction temperature and p-TsOH mass fraction on the whiteness and yield of BL were investigated, respectively. Results show that BLwhiteness decreases with the increases of extraction time, extraction temperature and p-TsOH mass fraction. BL yield decreases with prolonging extraction time, while it increases first and then decreases with increasing extraction temperature and p-TsOH mass fraction. Using the method of response surface design, the extraction of light-colored BL was further optimized. Results show that 36.11% of BL whiteness and 9.59% of BL yield are obtained under the optimal extraction conditions of 15 min of reaction time, 80℃ of reaction temperature and 40% of p-TsOH mass fraction. Finally, the structure of BL was characterized by FTIR and 2D-HSQC NMR. The results show that BL is a typical GSH-type lignin, and the reductionsin contents of carbonyl and methoxyl in BL structure are beneficial to an increase in whiteness.

Abstract:1-Iodomethyl-7,7-dimethyl-bicyclo[2.2.1]heptan-2-one was synthesized with recyclable camphorsulfonic acid as raw material and used to design and synthesize sixteen camphor derived imidazolium salts by quaternization and metathesis reaction. These target compounds were characterized by HRMS, 1HNMR, 13CNMR and 19FNMR. Their inhibition rates against Rhizoctonia solani, Fusarium proliferatum and Botrytis cinerea were tested by mycelial growth method. The results indicated that these compounds had certain inhibitory effects on three fungi. Some of the target compounds showed significant inhibitory effects on Botrytis cinerea, among them, 3-(7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methyl-1-(2,4,6-trimethyl)phenyl-1H-imidazol-3-ium bis(trifluoromethylsulfonyl) imide (Ⅲd) and 1-(4-bromophenyl)-3-(7,7-dimethyl-2-oxobicyclo [2.2.1]heptan-1-yl)methyl)-1H-imidazol-3-ium iodide (Ⅴa) had inhibition rates of 100%, better than chlorothalonil. Compounds Ⅲd and Ⅳa 1-(2,6-diiso-propylphenyl)-3-(7,7-dimethyl-2-oxobicyclo [2.2.1]heptan-1-yl)methyl)-1H-imidazol-3-ium iodide had good inhibitory activities against Fusarium proformi, with inhibition rates of 66.2% and 70.4%, respectively, which were samilar to that of chlorothalonil. The inhibition effects of the target compounds against Rhizoctonia solani were not as good as that of chlorothalonil.

Abstract:Vortioxetine, a novel antidepressant for the treatment of major depressive disorder, has a low water solubility, and the feature limits its bioavailability and efficacy. The aim of this paper is to improve the water solubility of vortioxetine by salt formation. In this paper, two new salts of the multimodal antidepressant vortioxetine with 2-picolinic acid and isonicotinic acid have been successfully prepared by the slow solvent evaporation method, and their crystal structures have been determined from single-crystal X-ray diffraction data. Structural analyses have shown the two salts have the similar N-H?O hydrogen bond base frame. Hirshfeld surface analysis have been carried out to gain additional insight into the differences of intermolecular interaction between the salt structures. The two vortioxetine salts was characterized and analyzed using infrared spectroscopy, differential scanning calorimetry, and powder X-ray diffraction. Compared with vortioxetine, two salts both showed the better thermal stability. The two salts both showed enhancement in solubility compared with vortioxetine. Overall, the results showed salt formation of vortioxetine with 2-picolinic acid and isonicotinic acid has the ability to change its physicochemical properties.

Abstract:Graphite felt was modified with polypyrrole by electrochemical oxidation polymerization. The morphology, elemental composition and electrochemical properties of the polypyrrole-modified graphite felts were characterized by SEM, FT-IR, XPS, LSV and EIS. The two-electron oxygen reduction activity of polypyrrole-modified graphite felts were characterized by H2O2 generation rate. The effects of supporting electrolyte and polymerization time on the structure and oxygen reduction performance of polypyrrole-modified graphite felts were investigated. The results showed that nitrogen atoms were introduced to the surface of graphite felts in the form of polypyrrole which greatly enhanced the oxygen reduction activity of graphite felts. Using sodium sulfate as supporting electrolyte led to better two-electron oxygen reduction activity and a H2O2 generation rate up to 24.82 mg/(L·cm2·h) at a cathode potential of -0.45 V. The two-electron oxygen reduction activity of the modified graphite felts increased first and then decreased with the increase of polymerization time. The sample with a polymerization time of 1000 s showed the highest H2O2 generation rate of 29.40 mg/(L·cm2·h). An electro-Fenton system was set up with PPy/GF-Na¬2SO4-1000 as the cathode material to degrade the salty organic wastewater from an ethyl cellulose process. COD of the wastewater was reduced to less than 100 mg/L, with a degradation ratio of 88.8% after 8 hours reaction. No significant activity loss was observed after 6 cycles test.

Abstract:Li5.95Al0.35La3Zr2O12 powder was prepared by sol-gel method with LiNO3, Al(NO3)3·9H2O, La(NO3)3·6H2O, and ZrO(NO3)2·5H2O as raw materials, then polyvinyl alcohol (PVA) aqueous solution was added as liquid medium to prepare Li5.95Al0.35La3Zr2O12 garnet solid electrolyte via cold sintering process. Finally, subsequent heat treatment was employed to improve ionic conduction properties. The density and ionic conductivity of Li5.95Al0.35La3Zr2O12 garnet solid-state electrolyte were evaluated by mass volume method and electrochemical impedance spectroscopy (EIS), the crystal structure and morphology were characterized by XRD and SEM respectively. The results showed that cold sintering holding time and pressure had slight effect on crystal structure of Li5.95Al0.35La3Zr2O12 garnet solid-state electrolyte. The crack was observed for too long cold sintering holding time. The density and ionic conductivity changed slightly for the sample sintered within 15 to 30 min, and impurity phase was detected for short sintering time. It was effective to improve density and ionic conductivity by increasing cold sintering pressure. Li5.95Al0.35La3Zr2O12 garnet solid electrolyte with higher ionic conductivity of 2.66×10-6 S/cm could be obtained at 510 MPa, 200oC and 30 min, which exhibited lower grain boundary resistance. However, the density and ionic conductivity decreased when cold sintering pressure increased further, due to the decomposition of second phase and limitation of grain growth during heat treatment.

Abstract:Using linseed oil and hydrogen peroxide as raw materials, three epoxy linseed oils with epoxy values of 1.16mmol/g, 1.52mmol/g and 2.32mmol/g were synthesized first, and then esterified with quantitative phosphoric acid to synthesize LCF-P1 and LCF-P2 and LCF-P3 three combined oxidized-phosphate linseed oil leather fatliquors. It was applied to leather fatliquoring, and the effect of different degrees of epoxidation on the fatliquoring performance of oxidized-phosphorylated leather fatliquors was explored, and the fatliquoring effect was compared with the commercial phosphate fatliquors. SEM was used to observe the morphology of collagen fibers in the cross section of leather before and after fatliquoring. The experimental results show that LCF-P2, a fatliquor with an epoxy value of 1.52mmol/g, shows good fatliquoring performance, the softness of the grey leather after fatliquoring reached 10 mm, the tensile strength was 35.91 N/mm2, the tear strength was 49.56 N/mm and the thickening rate of leather was 24.36%. In leather thickening rate, mechanical strength improvement slightly better than the market phosphate fatliquoring agent.

Abstract:Fe-pillared montmorillonite(Fe-MMT) was prepared with Ca-montmorillonite(Ca-MMT), ferrous sulfate as the original materials by calcination. The ultrastructures of prepared Fe-MMT were characterized by SEM, TEM, XRD and TGA. The results showed that the crystallinity decreased after calcination of the prepared Fe-MMT, but the thermal stability intensified. The morphology showed distinct characters, and a fraction of Fe substituted Ca resulted in the increased distribution of Fe, with its contents reaching 5.597% which meant 99.95% of Fe was inserted. The specific surface area for Ca-MMT was 29.86 m2/g, but it was increased to 51.29 m2/g for. Furthermore, the adsorption capacity was assessed, and it reached 95.43 mg/g for Fe-MMT, which was dramatically larger than that of Ca-MMT with a value of 15.00 mg/g. Additionally, it can still adsorb more than 88% of pyrene after 5 cycles of application, with the capacity kept at 0.709 mg/g. The results above indicated that the prepared Fe-MMT could be potentially applied in the removal of organic pollutants.

Abstract:An easily separated dephosphorization adsorbent, magnetic lanthanum-carrying eggshell (ES@Fe3O4-La) was obtained by loading lanthanum ions and iron oxides on the eggshell (ES). ES@Fe3O4-La was characterized by X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and laser particle size analyzer. The adsorption characteristics of ES@Fe3O4-La for phosphate in water were studied. The results showed that ES@Fe3O4-La had obviously higher adsorption capacity for phosphate than eggshell. The maximum adsorption capacity (qmax ) of ES@Fe3O4-La for phosphate was 18.02 mg/g at 25℃, while that on eggshell was only 2.58 mg/g. The phosphate adsorption on ES@Fe3O4-La was an endothermic process. The adsorption isotherm and kinetic data were well described by the Langmuir equation and the pseudo-second-order kinetic model. In addition, the initial pH value of phosphate solution had a great influence on the adsorption of phosphate on ES@Fe3O4-La. When pH was 3~4, ES@Fe3O4-La displayed the best removal effect of phosphate.

Abstract:Abstract: A novel flame retardant (M-MFRP) has been synthesized. Firstly we modificatied melamine formaldehyde resin (MF) and then coated red phosphorus(MFRP). Importantly in this way, we can get M-MFRP in order to reduce producing PH3 during processing between M-MFRP with the flame retardant erials. Then we compared PH3 releasing situation of before and after modification cladding red phosphorus. At the same time, we analysised flame retardant properties, mechanical properties, thermal decomposition performance to 10% for drug loadings MFRP ((M-MFRP)-PP.

Abstract:Waxy not only increases the viscosity of waxy crude oil, but also precipitates and accumulates on the pipe wall, reducing the efficiency of pipe transportation. A strain of surfactant producing hydrocarbon degrading bacteria F-1 was isolated from crude oil contaminated sludge and identified as Ochrobactrum intermedium by 16S rDNA. After the interaction with crude oil for 7 days, the high-wax crude oil with a wax content of 15.2% could be treated with a wax content of 9.1%, the crude oil wax mass fraction decreased by 40.1%, the crude oil viscosity decreased by more than 21%, and the cell surface hydrophobicity reached 28.1%. The biosurfactant produced by the bacteria was identified as lipopeptide by Fourier infrared spectroscopy. It can form a 91.49mm oil drainage ring, which can significantly reduce the surface tension of the medium and reach 65% emulsification coefficient of the liquid paraffin.

Abstract:Using 2,6-(Isopropyl)2-4-Adamantyl-C6H2 substituted BINOL skeleton magnesium phosphate as catalyst, to catalyze the asymmetric reaction of 2-naphthol and tert-Butyl benzylidenecarbamate(Ⅲa). Under the conditions of room temperature, reaction time of 15 h, toluene as solvent, and the amount of catalyst is 5% (based on the amount of substrate material, the same below), the tert-butyl (2-hydroxynaphth-1-yl)(phenyl)methylcarbamate(Ⅳa) produced by the reaction reached 97% yield and 90% enantioselectivity. Characterization using 1HNMR and HPLC. This study optimized the reaction conditions and determined the key parameters such as catalyst, reaction time, solvent, and reaction temperature. A small amount of catalyst can efficiently catalyze the reaction. The reaction condition is mild. And the method is cost-effective and environmentally friendly.