Abstract:Inorganic/organic composites are composites formed by dispersing inorganic nanoparticles into polymer matrix. Nanocomposites are not simple mixtures of inorganic and organic phases, but two phases compounded in nanoscale. The nano-filler is used as the dispersing phase and the polymer matrix is used as the continuous phase. The dispersing phase is dispersed in the polymer matrix in an independent phase. Composite materials synthesize the thermal stability, hardness, toughness and dielectric properties of inorganic materials. By adjusting the homogeneity and degree of compounding of the composites, the optimum properties of the composites can be obtained. The addition of nanoparticles can greatly improve the mechanical properties of the materials, and has excellent catalytic performance. In this paper, the research achievements of nanocomposites in preparation methods, surface modification of nanoparticles, nano-modified particles and industrial applications in recent years are reviewed, and the development direction of nanocomposites is analyzed and prospected.

Abstract:Abstract: The plant reducing agent-honeysuckle extract and the chemical reducing agent-glycerol were used to reduce silver nitrate to prepare two kinds of nano silver solutions. Then, the two nano-silver solutions prepared by the plant reduction method and the chemical reduction method were used for functional finishing of the cotton fabrics by the dipping method. The morphology and structure of cotton fabrics before and after finishing were analyzed by SEM, EDS, XRD, and FTIR. The anti-ultraviolet properties of silver-loaded cotton fabrics and the changes in silver content, color difference, and antibacterial performance after different washing times were discussed. The results show that the nano-silver particles were mainly adsorbed on the amorphous region of cotton fibers by Van der Waals' force. Compared with the chemical reduction method, the particle size of nano-silver prepared by the plant reduction method decreased by about 15 nm. After 50 times of washing, the adsorption amount and color difference of nano silver on the surface of the cotton fabric treated by plant method did not change much, and the antibacterial rate against E. coli and S. aureus still reached more than 99%. It had excellent antibacterial properties and good washing resistance. In addition, the UPF value of the cotton fabric treated by the plant reduction method reached 36.82, which had good UV resistance.

Abstract:In recent years, advanced oxidation processes (AOPs) have been widely used to remove contaminants from wastewater, but the disadvantages of high cost and energy consumption limit the application of this technology. The development of low-cost, efficient and reusable catalysts to reduce the cost of this technology is an effective way to improve the application of AOPs. Transition metal sulfides (TMS) have good conductivity, mechanical stability and thermal stability. TMS with adjustable band gap can be used as photocatalysts. This paper reviews the applications of TMS in AOPs. TMS can increase reduction rate from Fe3+ to Fe2+ in Fenton process by exposing metallic active sites with unsaturated sulfur atoms, directly activate persulfate or peroxymonosulfate and act as photocatalysts. The modifications of TMS are also introduced, which can increase the active sites and reduce the band gap through element doping; improve the conductivity and enhance the catalytic activity through compositing with metal compounds; generate H2O2 in situ and reduce the recombination of electron hole pairs through compositing with carbonaceous-based materials. Finally, the development directions of TMS in AOPs in the future are also prospected.

Abstract:Fluorescent dyes with application prospect, have attracted the attention of many scholars due to their high emission intensity, bright color and strong fluorescence. According to the classification of dyes, the development of commercial disperse, acidic and reactive fluorescent dyes, 1, 8-naphthalimide, coumarin, hemiocyanine and other derivatives in textile dyeing applications are summarized from the last century to the present. Finally, the developing trend of fluorescent dyes suitable for textile is proposed.

Abstract:Glass slide immobilized amorphous organozirconium polymer was fabricated by a solvent heating method. SEM, XRD, BET, IR, UV-Vis, ICP, organic element analysis, PL and UPS were used to characterize the catalysts. The band gap of the immobilized amorphous organozirconium polymer was narrowed to 2.64 eV. Comparatively, it was 2.74 eV for NH2-UiO-66(Zr). Additionally, the amorphous organozirconium exhibited more effective separation of the photogenerated electrons. In a photocatalytic reactor, two pieces of glass slides loaded with amorphous organozirconium were glued together with a total area of 50.4 cm2. Photocatalytic reduction of CO2 was illuminated under a 300 W Xe lamp. The yield of methanol was 443.0 μmol for 4 hours of reaction duration, and the corresponding turnover frequency (TOF) was 8.9 h-1.When 0.1 g of NH2-UiO-66(Zr) was used as catalyst, the yield of methanol was 244.3 μmol, and the TOF was only 0.17 h-1. Therefore, the photocatalytic performance of amorphous organozirconium polymer is obviously better than NH2-UiO-66(Zr) powder. And the catalyst showed good stability in cyclic experiment.

Abstract:In this study, a novel glyceryl ether fluorocarbon surfactant（sodium 2, 3-bis-octafluoropentanylglycerol-1-sulfate, BOFPGS） was synthesized through a two-step reaction by using 1H, 1H, 5H-octafluoropentanol and 2,3-dibromopropan-1-ol. The structures of intermediate and product were characterized by Fourier-Transform Infrared spectroscopy（FTIR）, 1H NMR spectroscopy and mass spectrometry（MS）. The surface activity was measured. The results showed that it had good surface tension（22.70 mN/m） and critical micelle concentration（4.16 x 10-3mol/）. In addition, emulsifying experiments demonstrated that BOFPGS possessed excellent emulsifying properties at a low concentration of 0.8 × 10-3 mol/L. Moreover, the cytotoxicity experiment verified that BOFPGS had no obvious cytotoxicity at the concentration range of 8.04 × 10-6~ 1.60 × 10-4 mol/L.

Abstract:Fluorinated poly (methyl) acrylate emulsions (FPEs) have received lots of attention for waterborne fluorinated coatings because of their merits of ease of preparation and modification，plus the fact that the resultant coatings have low surface energy, good anti-fouling property, and excellent chemical stability. The chemical composition has remarkable impact on emulsion and coating properties. Herein, the reported types of fluorinated monomers and their synthesis are introduced, the structure-performance relationship of FPEs is discussed, the preparation protocols and the prospect applications of FPEs are reviewed, and the challenges and future development of FPEs are discussed.

Abstract:Partial hydrogenation is an effective way for improving the performance of polyunsaturated fatty acids and polyunsaturated fatty acid esters. However, trans-isomers generated in the hydrogenation reaction, which would lead to the poor quality of hydrogenated oils and fats. It is significant to study the reducing of trans-isomers generation during the hydrogenation of fatty acid and its esters. The hydrogenation mechanism and the reason of trans-isomers generation have been introduced. On the base of this, it has reviewed the progress of reducing of trans-isomers in terms of hydrogenation method, active components, metal modifier, support materials and preparation method of catalyst. The influence rules about formation of trans-isomers were analyzed and summarized. Furthermore, the reducing methods of trans-isomers generation were proposed.

Abstract:The thermal conductivity models of polymer-based carbon nanotube-filled composites were reviewed, and the mechanism of carbon nanotubes (CNTs) filled in composite thermal conduction systems were analyzed. The homogeneous, heterogeneous, random dispersion models as well as the calculation methods commonly used in heat conduction were summarized. The models enrich the thermal conductivity theory and can make preliminary predictions of the thermal conductivity of composite materials, but there are approximate or simplified treatments in terms of numerical values. The prediction of carbon nanotube composite materials cannot be used widely. To improve the accuracy of prediction, more attention should be paid on the thermal resistance at the molecular interface.

Abstract:Alkyd resin is widely used in the fields of paints, coatings, adhesives and ships. However, most of the alkyd resin uses organic solvent as dispersion medium, which causes serious pollution to the environment. Hence, the preparation of the water-based alkyd resin is imminent. Based on this, the preparation method and synthesis principle of the water-based alkyd resin were reviewed in this paper. Subsequently, the influence of raw materials, oil degree, alcohol-acid ratio and acid value on the performance of the water-based alkyd resin was summarized and the reason for them was analyzed, combined with the development of the water-based alkyd resin in recent years. Finally, the future development trend of the water-based alkyd resin was prospected.

Abstract:Polyurethane (PU) was synthesized from polypropylene glycol (PPG 2000) and diphenylmethane diisocyanate (MDI-50) by a prepolymerization method.The carbon nanotubes(CNT) were added in the prepolymerization process to synthesize carbon nanotubes / polyurethane (CNT / PU),while carbon black(CB) was added in the process of chain extension to synthesize carbon black / polyurethane (CB / PU).CNT/PU nanofibers and CB/PU nanofibers were obtained by eletrospinning technique.The structure and properties of the two kinds of nanofibers were characterized by SEM,TEM,FTIR,DSC,XRD , electrical,mechanical and sensing properties tests.The results showed that, because of the selective embedding of carbon nanotubes / carbon black in the soft and hard segments of PU,the degree of microphase separation of PU nanofibers increases / decreases;the elongation at break of CNT / PU fibers decreases, and the breaking strength of CB / PU fibers increases.The content of conductive filler is based on the mass of polyurethane (the total mass of PPG 2000, MDI-50 and anhydrous ethylenediamine used in the experiment)，when the CNT content is 6%, the resistivity of CNT / PU fibers was 1.22Ώ•m and the strain sensing coefficient (GF) was 45.64; when the CB content is 12.5%, the resistivity of CB / PU fibers was 0.14Ώ•m, GF was 167.43.

Abstract:We used CTAB as the soft template and tetrabutyl titanate, Thiourea, and Ytterbium nitrate as raw materials to prepare S–Yb co-doped TiO2 nanoparticles by a hydrothermal method. The structure and properties of the prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy coupled with energy dispersive X-ray spectroscopy (TEM-EDS), ultraviolet–visible spectroscopy (UV-Vis), N2 adsorption/desorption with the Brunauer– Emmett–Teller (BET) method, and photoluminescence (PL). The photocatalytic performance of the sample was evaluated by using methylene blue as a model pollutant and a xenon lamp as the light source. The results showed that TiO2 contained a single anatase phase and Yb and S were successfully doped into the crystal lattice of TiO2. Doping resulted in smaller grains, lower band gap, and larger specific surface area, reducing the probability of recombination of the photogenerated electron-hole. The catalyst with a molar ratio of doped S and Yb of 2:1.5 (2.0%S/1.0%Yb-TiO2) exhibited the best catalytic performance, with a degradation efficiency as high as 97.75 % after being irradiated by a 500 W xenon lamp for 90 min.

Abstract:Superhydrophobic stainless steel mesh was prepared by using epoxy resin to bondthe stearic acidmodified fly ash on the surface of stainless steel mesh skeleton. The as-prepared mesh was characterized by TEM, SEM, FTIR, and contact angle measurement. Theresults showed the surface of the modified super hydrophobic stainless steel mesh under high power microscope exhibited a micro-nanohierarchicalstructure with a certain roughness, and the water contact angle of the mess was up to 153°. In addition,the as-prepared stainless steel mesh had good mechanical stability and superhydrophobic durability. The water contact angle of the surface was still as high as 141° after 100 mechanical abrasiontests. The material was used in the separation of various oil/organic solvents and water mixtures, and the separation efficiency wasall higher than 94%.

Abstract:Using ferric chloride hexahydrateand zinc chloride as raw materials，and utilizing the self-assembly of polyethylene glycol 4000 as a surfactant, ZnFe2O4 nanoparticles with a hollow structure were synthesized in one step by a soft template hydrothermal method. The phase and morphology of the samples were characterized by XRD, XPS, FE-SEM and TEM, and the magnetic properties of the samples were investi-gated by vibrating sample magnetometer (VSM). A vector network analyzer was used to test the electro-magnetic parameters of the sample, and the reflection loss of the samples was calculated by simulation to study the absorbing performance of the sample. The results show that the as-prepared hollow ZnFe2O4 has a particle size of about 100 nm, is uniformly dispersed, and has a clear hollow structure. The absorbing properties are excellent, when the matched thickness of the sample is 2.7 mm, the minimum reflection loss(RL) at 12.41 GHz is up to -42.18dB; And when the matched thickness is 3.0 mm, the effective ab-sorption bandwidth( RL≤-10 dB,90% absorption rate) is 2.60 GHz (10.60GHz~13.20GHz).

Abstract:The β-cyclodextrin nanosponge (NSCD) was synthesized by microwave irradiation method, using β-cyclodextrin (β-CD) as the monomers and diphenyl carbonate (DPC) as the cross linker. The Box-Behnken design of response surface methodology was used to evaluate the interactive effects of temperature, reaction time and the molar ratio〔n（β-CD）:n (DPC）〕on the yield of NSCD. The optimum reaction conditions were obtained as follows: the reaction time was 87 min; the reaction temperature was 90 ℃; the molar ratio was 1:1.75. Under the optimum reaction conditions, the product yield of 70.71% was obtained. The structure and physicochemical properties of the products are characterized by DSC, PXRD, SEM and BET. As the result, the characteristic peaks of carbonyl appeared at 1760 cm-1 in the FT-IR spectrum compared with that of fresh β-CD, which indicate the successful crosslinking of β-CD and DPC; The results of DSC showed the thermal degradation temperature of the NSCD was about 260 ℃ PXRD results shows that the as-synthesized NSCD obtained from our microwave-assisted method had higher crystallinity than those prepared with conventional heating method, consistent with our SEM results. The BET analysis showed an increase in the specific surface area of product as the molar ratio increase, while the pore size changed in the opposite tendency. The reaction time of the optimized process was nearly four times shorter than the traditional method and the yield was increased by 20%~30%.

Abstract:The sodium ion plays critical roles in many physiological and pathological processes such as nerve conduction and muscle and heart contraction; it modulates the electrolyte level, cation transport, and cell volume. Therefore, it is very important to develop two-photon fluorescence probes for three-dimensional dynamic imaging of sodium ions in cells. A novel two-photon fluorescence probe (DNa) for Na derived from dicyanostilbene as a two-photon fluorophore and benzo-15-crown-5 as a novel Na ligand was develped, and its structure was analyzed and identified. DNa possessed small molecule size, large two-photon absorption cross-section (1054 GM), noncytotoxic effect, excellent photostability, moderate water-solubility, and good cell-permeability. DNa showed excellent selectivity for Na and was not interfered by other ions. The dissociation constant of Na , kd = 23 ? 2 mmol L-1. DNa can be used in the three-dimensional imaging of Na in cells, so it is an excellent two-photon fluorescence probe.

Abstract:A series of extended surfactants (e-surfactants), sodium monododecyl polyoxypropylene phosphates (C12PpP) with propylene oxide (PO) average addition number (p) (p=3, 6, 9) were synthesized from dodecyl alcohol by propoxylation and phosphorylation followed by neutralization. These e-surfactants were characterized by FTIR and ESI-MS. The properties of C12PpP, such as Krafft point (TK), electrolyte-tolerance, surface tension, foaming power, emulsifying power, wetting power and detergency were tested and compared with those of monododecyl phosphate potassium salt (MAPK). The results showed that these e-surfactants exhibited better foaming power, emulsifying power, wetting power and detergency than those of MAPK. Due to their TK < 0 ℃, the C12PpP surfactants demonstrated excellent low-temperature water solubility, which overcomes the shortcomings of sodium counterpart of MAPK insoluble at low temperature. At the same time, the C12PpP surfactants showed better calcium-tolerance, which was 5~8 times greater than that of MAPK. The C12PpP surfactants almost had the same detergency for protein and sebum soiled swatches as MAPK. Therefore, the synthesized C12PpP surfactants have the similar low irritation to MAPK and were able to replace MAPK in personal care and toiletries products.

Abstract:The polysaccharide was extracted from the ethanol-extracted debris of Abelmoschus manihot (L.) Medic flower by water extraction and alcohol precipitation method. The total sugar content and extraction rate were determined. The Abelmoschus manihot (L.) Medic polysaccharide (AMP) was obtained by purification through DEAE-52 column chromatography and monosaccharide composition of AMP were determined. The bioactivities including antioxidant activity in vitro, DNA protecting activity and hepatic cancer cell HepG2 growth inhibitory effect of AMP were investigated. The results showed that the extraction rate reached 13.47% and the content of total sugar was 97.43%. AMP was mainly composed of rhamnose, glucose, arabinose and fucose at a molar ratio of 1.44:5.44:1.00:5.37. The order of radicals scavenging capacities of AMP was O2－· > ABTS+· > ·OH > DPPH· > NO· , which suggested AMP had certain antioxidant activity in vitro. 8 g/L AMP had the best inhibition effect on DNA oxidative damage induced by H2O2 . The inhibitory ratio of HepG2 cell increased with the increase of AMP concentration ranging from 0.125 to 5.000 g/L, indicating that AMP had potential antitumor activity.

Abstract:A series of metal oxide supported silicotungstic acid catalysts have been successfully synthesized through impregnation method. The catalysts so fabricated of the structure, stability and acidity were characterized by various physicochemical techniques such as FTIR, XRD, TGA-DTG, BET, and 31P MAS NMR and their catalytic performances during the preparation of monoglyceride laurate (GML) were assessed. The results showed that 20HSiW/SnO2 catalyst exhibited the superior catalytic performance in the preparation of GML owing to strong Br?nsted acidity and Br?nsted-Lewis acid synergy for supported catalyst. A maximum GML yield of 78.9% was achieved for the 20HSiW/SnO2 catalyst under the optimal conditions: molar ratio of glycerol (GL) to lauric acid (LA) was 5:1, the mass fraction of 20HSiW/SnO2 catalyst was 7% (based on LA), the reaction time was 3 h, and the reaction temperature was 423 K. The yield of GML could still reach 73.6% after 20HSiW/SnO2 catalyst was reused 5 times, indicating that this catalyst had excellent durability. Further kinetic studies confirmed that the esterification of GL with LA to GML with an activation energy of 33.02 kJ/mol.

Abstract:NiO catalysts supported on MgAl2O4 spinel were prepared by ball-milling method, and the effects of Ni source, NiO loading, ball-to-powder ratio, ball-milling speed and calcination temperature on catalytic lean burn of high-diluted methane were investigated with instruments like H2-TPR, BET, XRD and SEM, etc. Weaker interaction between the Ni precursor and carrier was found in catalysts prepared by ball-milling than by impregnation or deposition-precipitation, to produce the NiO species with higher catalytic activity after calcination. In ball milling, the factors of Ni source and loading, ball-to-powder ratio and ball-milling speed, and calcination temperature as well, all can affect catalytic performance by altering the grain size or bonding state of NiO species on carrier surface. The NiO/MgAl2O4 catalyst prepared from nickel acetate with 10% in mass fraction of NiO loading, ball-milled at ball-to-powder ratio of 2∶1 and 400 r/min, and calcined at 700℃ has demonstrated better stability and activity, and its pseudo first-order reaction rate constant at 600℃ was 0.489 L/(g·s), which is higher than that of La0.8Ca0.2FeO3 or La0.8Sr0.2MnO3 perovskite supported on MgAl2O4 spinel.

Abstract:In order to explore the influence of different preparation methods on the morphologies, structures and surface species of cerium-manganese solid solutions, as well as clarify the relationship between the structures and their catalytic performances, four kinds of cerium-manganese solid solutions〔containing 15% manganese in theory, n(Ce)∶n(Mn)=0.85∶0.15〕were prepared by the nano-casting method, hydrothermal method, co-precipitation method and thermal decomposition method, respectively. The physical and chemical properties of the catalysts were characterized by XRD, FESEM, TEM, N2 adsorption-desorption, ICP-OES and XPS. The catalytic performances of catalysts were evaluated by the selective catalytic synthesis of N-benzylideneaniline from benzyl alcohol and aniline under air atmosphere. The results showed that the catalyst prepared by nano-casting method possessed the best catalytic activity with highest aniline conversion of 67.9%, N-benzylideneaniline selectivity of 99.4% and time space yield of 0.56 mmol/(gcat·h). Compared with the other three preparation methods, the best performance of cerium-manganese solid solution prepared by nano-casting method could be attributed to its larger surface area, specific mesoporous structure and richer content of surface Ce3+ and Mn3+.

Abstract:The carrier Fe-HAP was synthesized by ion exchange method using commercially available low-grade HAP as raw material, and then supported Ni2P/HAP and Ni2P/Fe-HAP catalysts were prepared by impregnation method. The catalyst was characterized by N2 adsorption-desorption, scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and thermogravimetry (TG). Doping Fe3+ greatly increases the specific surface area of the carrier, Ni2P dispersed on the surface of Fe-HAP and good thermal stability. The reaction system was prepared by hydrogenation of phenol to cyclohexanone. The catalytic performance of Ni2P/HAP and Ni2P/Fe-HAP catalysts was compared using cyclohexanone prepared from phenol hydrogenation as the reaction system at a reaction temperature of 150 ° C, a pressure of 0.5 MPa, and a time of 3.5 h. It was found that the Ni2P/Fe-HAP catalyst showed good catalytic activity and cyclohexanone selectivity.

Abstract:In order to search for antitumor compounds, nine L-phenylalanine dipeptide derivatives containing phosphonate backbones were designed and synthesized. Their structures were confirmed by 1H NMR, 13C NMR and MS. These compounds were tested for their antitumor activities in vitro by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. The results showed that some of the target compounds had inhibitory effect on the proliferation of the tumor cells and showed potential antitumor activity. Among them, espectively, compound Ⅲi showed remarkable activities against A-549 and EC-109 with IC50 values of 6.8 ± 0.9 μmol/L and 7.0 ± 1.2 μmol/L, respectively, which were close to cisplatin.

Abstract:In order to improve the transdermal delivery of CoQ10 (CoQ10), CoQ10-Nanosolve with different concentrations of solid lipids were prepared using caprylic caprate triglyceride (GTCC) as liquid lipid and cetyl palmitate (CP) as solid lipid. Its stability and transdermal properties were studied. The results showed that the addition of solid lipids had no effect on the particle size and storage stability of CoQ10-Nanosolve. The particle size of CoQ10-Nanosolve with different concentrations of solid lipids were about 52nm, and there was no significant change in particle size and appearance after 180 days. FT-IR results showed that there was no chemical reaction between CoQ10 and Nanosolve and it could be encapsulated in Nanosolve well. From the occlusive effects, in vitro transdermal experiments, and laser confocal microscopy, it was found that when the mass concentrations of CP increased to 70% and 95%, CoQ10-Nanosolve could significantly reduce the evaporation of water from the skin and better promote the transdermal absorption of CoQ10，and the fluorescence intensity of the epidermal layer and the dermal layer was significantly enhanced.

Abstract:Abstract: Metal-organic framework material, Cu-MOF was synthesized by solvent-thermal method from terephthalic acid and copper nitrate hydrate, and then roasted at different temperaturein nitrogen to obtain copper-carbon composites, Cu-MOF-T (T=700 ℃, 800 ℃, 900 ℃, 1000 ℃). The materials were characterized by XPS, SEM and BET. The catalytic degradation performances of methyl orange (MO) simulated wastewater by Cu-MOF-T samples as Fenton like heterogeneous catalysts were investigated. The effects of initial pH, initial mass concentration of MO, and the stability of catalyst were optimized to explore the application of Cu-MOF-800. The results showed that Cu-MOF-T samples exhibited a porous lamellar structure with Cu, C, and O as the main components. The size (10～1μm) of Cu-MOF-T decreased with the increase of roasting temperature. Among these samples, Cu-MOF-800 had the maximum specific surface area, pore volumes and Cu+/Cu2+. Under the conditions of molar concentration of H2O2 10 mmol/L, mass concentration of catalyst 1 g/L, reaction temperature 50℃, pH value of solution 3, and mass concentration of MO 200 mg/, Cu-MOF-800 showed the best performance for the degradation of MO solution, and after 60 min of reaction, the degradation rate of MO could reach up to 99%. The degradation rate of Cu-MOF-800 for MO was still over 96% even after being for 5 cycles.

Abstract:Eucalyptus-based magnetic activated carbon was prepared with KOH as activator and FeCl3•6H2O as magnetic agent by one-step method. The structure and properties of the sample were characterized by automatic analyzer of specific surface area and aperture analyzer, FTIR, XRD, and VSM. The adsorption properties of methyl orange on eucalyptus-based magnetic activated carbon were investigated. The effects of adsorbent dosage, initial concentration of methyl orange, pH value and adsorption time on the adsorption effect were investigated. The results showed that the BET specific surface area, pore volume, and average pore diameter of the prepared magnetic activated carbon MAC-0.42 were 1430.32 m2/g, 0.893 cm3/g, and 2.49 nm, respectively. The adsorption kinetics and adsorption isotherm experiments were conducted under the conditions of adsorbent dosage 0.045 g, initial mass concentration of methyl orange 0.25 g/L, pH of the solution (about 6.82), and adsorption time 10 h. The adsorption values of iodine and methylene blue of eucalyptus magnetic activated carbon were 1571.4 mg/g and 315.52 mg/g, respectively. There were —OH，—C=O, and —COO on the surface of the magnetic activated carbon.The sample contained magnetic substances Fe and Fe3O4 with a specific saturation magnetization of 48.65 emu/g, which could be separated from the solution quickly when the magnetic field was applied. The adsorption of methyl orange was consistent with the Langmuir model, and the maximum adsorption capacity was 333.33 mg/g. The adsorption process was a spontaneous endothermic process. The dynamic adsorption behavior of methyl orange was more consistent with the pseudo-second-order kinetic model.

Abstract:Co/Fe layered double hydroxides (Co/Fe-LDHs) was prepared by coprecipitation method, and calcined Co/Fe layered double hydroxides（Co/Fe-LDO） was obtained after calcination. The structure and properties of Co/Fe-LDHs and Co/Fe-LDO were characterized by XRD, SEM, BET and XPS. The in-fluencing factors and mechanism of phenol degradation by Co/Fe-LDHs or Co/Fe-LDO activated persul-fate were studied．The results show that the specific surface area is increased from 41.2 to 56.8 m2/g and pore volume is increased from 0.2 to 0.3 cm3/g by calcined method, so the activation ability of persulfate is significantly improved. As reaction time was 30.0 min, reaction temperature was 25.0 °C, dosage of Per-sulfatewas 0.2 g/L, dosage of Co/Fe-LDO was 0.2 g/L, pH was 6.0 and initial phenol concentration was 100.0 mg/L, the phenol degradation rate reached 90.1%. The phenol degradation of persulfate activation by Co/Fe-LDO mainly due to SO4−• and •OH.

Abstract:Hyperbranched polysiloxanes with different phenyl content were prepared by hydrolytic polycondensation. The effect of the introduction of phenyl on the solubility of hyperbranched polymers in CO2 was investigated. The cloud point pressure test shows that the introduction of phenyl group has little effect on the solubility of the polymer with hyperbranched structure in CO2. The increase in the content of phenyl in the hyperbranched polymer does not cause a significant increase in the cloud point pressure, which is expected to achieve good solubility and thickening performance as a CO2 thickener. The interactions between hyperbranched polysiloxanes and linear polysiloxanes with CO2 molecules and the interactions between hyperbranched polysiloxanes were calculated and analyzed through molecular simulation, and found that phenyl-containing hyperbranched polysiloxanes possess lower CED and δ, shows a weaker intermolecular polymer interaction, which is beneficial to the dissolution of hyperbranched polysiloxane in CO2.

Abstract:Using phthalic anhydride (PA) and diethylenetriamine (DETA) as raw materials, electrophilic addition-elimination of the synthetic organic intermediate bis(2-phthalimide)amine (DETA-2PA), Synthesis of a new organic intermediate N,N-bis(2-(1,3-dioxoisoindol-2-yl)ethyl)acrylamide (AC-DETA) by amidation reaction with acryloyl chloride (AC) -2PA). The structure and properties of the product were characterized by FT-IR, 1H-NMR, TGA, fluorescence spectroscopy and elemental analysis. The effects of reaction temperature, reaction time and material ratio (DETA-2PA): (AC) and catalyst dosage on the amine value of synthetic AC-DETA-2PA were investigated. The synthesis process of AC-DETA-2PA was optimized by response surface design, and the preferred synthesis conditions were as follows: n(AC-DETA): n(AC)=1:1.6, reaction temperature was 25?C, catalyst dosage 0.384 g, reaction time 4h, under this condition, the amine value of AC-DETA-2PA can reach 2.96mgKOH/g.