Abstract:A Fe@GE composite has been synthesized by using glucose as the carbon source, NH4Cl as the foaming agent, nano-Fe as the catalyst to promote the graphitization of glucose. The Fe@GE composite exhibits high degree of graphitization with less defects, which is confirmed by UV-Vis and Raman. Using Fe@GE as the substrate material, a 3-D Fe@GE-Cu composite has been fabricated with the incorporation of nano-Cu through low-temperature hydrothermal method, as testified by TEM and FESEM. The Fe@GE-Cu composite is stable under ambient state according to the analysis of XRD, FTIR and ICP. The catalytic reduction activity of the composite has been tested through the reaction of 40 mL K2Cr2O7 solution ( 200 mg/L ), after adding 1 mL (88wt%) HCOOH and 10 mg Fe@GE-Cu0.65 catalyst, 100% of Cr(VI) has been reduced in 9 minutes. It shows the composite has high catalytic activity in the reduction of Cr(VI) and could be applied in solving problems of heavy metal pollution.

Abstract:Sodium and Zirconium modified zeolite (Zr-Na/Zeolite) was made through ion exchange with Na+ and deposition of zirconium hydroxide. Removal of ammonium and/or phosphate from aqueous solution containing ammonium, phosphate, and ammonium& phosphate by Zr-Na /Zeolite under different pH value, initial mass concentration and temperature was investigated. Results showed that the Zr-Na /Zeolite had a significant enhancement on phosphate adsorption while kept good ammonium adsorption efficiency compared with Na /Zeolite. The initial pH of the solution had a difference influence to the adsorption efficiency of ammonium and phosphate. The ammonium adsorption performance was relatively high at pH 4-8 and the maximum adsorption capacity was 4.5 mg/g. The phosphate adsorption performance decreased gradually with the increasing of pH. When the pH value changed from 2 to 10, the adsorption capacity decreased from 4.71 mg/g to 2.20 mg/g. When the initial concentration changed from 10 mg/L to 200 mg/L, the amount of adsorbed ammonium and phosphate increased from 1.42 mg/g to 11.6 mg/g and 2.46 mg/g to 11.8 mg/g, while the removal rate decreased from 57.0% to 23.2% and 98.2% to 23.6%, respectively. When the temperature of solution increased from 25 °C to 45 °C, the adsorption capacity of ammonia nitrogen increased by 10%, and the adsorption capacity of phosphorus increased by 11%. The adsorption procedure was suitable to be described by pseudo-second-order equation. The effective desorption of ammonium and phosphate on modified zeolite could be achieved using a 0.1 mol/L NaOH and 1.0 mol/L NaCl mixed solution and the regenerated modified zeolite almost kept the adsorption efficiency on phosphate within 14 cycle times.

Abstract:Plant oil based polyurethanes were synthesized using the mixture of PEPSO and castor oil as raw materials. During the synthesis of prepolymer, different content of double-decker octaphenylsilsesquioxanetetraol (DDSQ-4OH) was introduced into the polyurethane molecular chains through the chemical reaction between OH of DDSQ-4OH and NCO of IPDI. Consequently, a series of emulsion particle distributions and nanocomposites with different DDSQ-4OH contents were acquired and numbers of characterizations were taken to evaluate the properties of these materials such as FT-IR, particle size analyzer, thermal stability, mechanical properties and surface hydrophobicity. TGA results show that the hybrid polyurethanes display both enhanced initial decomposition temperatures (T5% ) and final stable temperature (Tf). Contact angle test results show that with the introduction of DDSQ-4OH, the hydrophobicity of hybrid polyurethanes can be enhanced to some extent. The morphology observed by scanning electron microscopy (SEM) showed that DDSQ-4OH may occur to aggregate with high mass content. Mechanical test results show that with the introduction of DDSQ-4OH, the tensile strength of hybrid polyurethanes can be enhanced to some extent．

Abstract:Abstract: In2O3/CdS composites were prepared via a hydrothermal route using In2O3 nanospheres as the substrate. The as-prepared composites were characterized by XRD and SEM. The results show that the composites consist of cubic phase In2O3 nanospheres and hexagonal CdS nanorods, and In2O3 nanospheres coat on the surface of rod-like CdS nanostructure. The optical property and degradated experiment reslults show that the spectral range of the as-prepared composite is broadened and the photo-catalytic properties are also improved compared with those of pure In2O3 and CdS. When n（In2O3）：n（CdS）=1:4, the photocatalytic ratio of the as-prepared composite is the optimum, which is 96.2%. The reason may be that CdS can capture the electron on the surface of In2O3 and reduces the probability of recombination of electron-hole pairs, improving the photo-degradation ability of In2O3/CdS.

Abstract:Graphene oxide modified with aqueous ammonia samples were prepared by impregnation method, and the catalytic performances of the as-prepared samples in Knoevenagel condensation reaction of benzaldehyde with malononitrile were investigated. The properties of the catalysts were characterized by X-ray diffraction, Raman spectra, Fourier transform infrared spectroscopy, NH3-TPD and elemental analysis. Results indicated that graphene oxide modified with aqueous ammonia samples exhibited excellent performances in the Knoevenagel condensation reaction of benzaldehyde with malononitrile. The catalytic activity increased gradually with increasing the concentration of aqueous ammonia. A 93.6% conversion of benzaldehyde and a 94.8% selectivity of benzylidene malononitrile was obtained over graphene oxide modified with 5 wt% aqueous ammonia in the appropriate conditions. It is very important that the graphene oxide modified with aqueous ammonia samples can be reused for 5 times only by simple filtration after reaction. Characterization results indicated that graphene oxide modified by ammonia can effectively immobilize NH4+ on the surface of graphene oxide.

Abstract:A series of high content UV-curable waterborne polyurethane /polyacrylate emulsion (UV-WPUA) were synthesized by Polyethylene glycol 600 diacrylate (PEG600DA) as polymerizable nonionic emulsifier. The structure and properties of UV-WPUA emulsion and films were characterized by Fourier transform infrared spectroscopy (FTIR), Dynamic laser light scattering instrument (Size), thermogravimetric analysis (TGA), Differential scanning calorimeter (DSC) and Mechanics Performance Testing. The results showed that: When PEG600DA mass fraction increased from 0% to 10.87%, the emulsion partical size decreeased from 48.16 nm and 27.09 nm, after increased to 78.52 nm, the glass transition temperature of soft section (Tgs) rised, and the glass transition temperature of hard segment (Tgh) decreased, the tensile strength firstly increased from 22.19 to 27.82MPa，and then descended to 17.13, the elongation at break reduced from 315.17% to 203.93. when PEG600DA content was 6.09%, the thermal stability of the film was optimal，the thermal decomposition temperatures with 10%, 30% and 50% weight loss were improved by 16.324, 18.804 and 17.547 ℃ respectively.

Abstract:The Bi24O31Br10/BiOBr composite nanosheets were synthesized by a facile solvothermal method using Bi(NO3)3. 5H2O and cetyltrimethyl ammonium bromide (CTAB) as materials, employed triethanolamine (TEOA) as pH regulator. The obtained samples were characterized by X-ray diffractometer (XRD), Scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET) measurement, UV-Vis absorption spectrometer. The composition, microstructure and morphology of the obtained products can easily be controlled by tuning the amount of TEOA and the atomic ratios of bromide and bismuth in the reaction system. The photocatalytic activity of the obtained products was evaluated by the degradation of colorless antibiotic agent ciprofloxacin (CIP) under visible light irradiation (λ≥420 nm). When the amount of TEOA was 8 mL and the molar ratio of bromide and bismuth source was 1:1, the obtained composite Bi24O31Br10/BiOBr exhibited the highest photocatalytic activity. Its reaction rate constant is about 4.0 times higher than that of pure BiOBr, which is mainly attributed to the charge transfer between BiOBr and Bi24O31Br10. Moreover, the high specific surface area and the abundant oxygen vacancies also contribute to the high photocatalytic activity.

Abstract:The basic properties of supercritical CO2 fluid was introduced. Recent research progress of engineering apparatus system, engineering dyeing procedure and special dyes in supercritical CO2 fluid were reviewed at home and abroad. The obtained results showed that after years of development, supercritical CO2 fluid engineering dyeing apparatus for fibers, bobbins and fabrics have been started to launch in the market, which can guarantee the safe operation by employing an intelligent security interlock system. Engineering dyeing procedure technology for polyester in supercritical CO2 fluid is becoming mature, and has been made initial production applications worldwide. However, special dyes for natural fibers dyeing in supercritical CO2 fluid still have the problems of poor color fastness and easy to cause equipment corrosion. In addition, the problems that should strive to solve in the industrialization of supercritical CO2 fluid dyeing were put forward, including the establishment of special commercial dye system for supercritical CO2 fluid dyeing, the industrial amplification design of supercritical CO2 fluid dyeing apparatus and the amplification effect of supercritical CO2 fluid dyeing procedure.

Abstract:In order to improve the solubility and bioavailability of β-carotene, we studied that the β-carotene was emulsified and encapsulated by Pickering emulsions stabilized with starch nanocrystals (SNC) as a granular emulsifier. The results showed that when the concentration of SNC was 1 wt.%, the volume fraction of oil was 0.5, the concentration of β-carotene was 0.05 wt.%, and the Pickering emulsion was modified by quaternized chitosan (QCS), the emulsion separation phenomenon of the emulsion carrying β-carotene can be improved obviously, and the storage stability is better. At the same time, the in vitro simulated digestion experiment showed that the digestion degree of the oil in the emulsion after QCS modification was increased from 56.68 ? 1.56% to 71.70 ? 2.13%, and the bioaccessibility of β-carotene was also increased from 33.59 ? 0.82% to 57.62 ? 1.58%. Therefore, QCS modification can not only improve the stability of β-carotene Pickering emulsion, but also improve the digestion degree of oil in the emulsion and the bioaccessibility of β-carotene.

Abstract:Genistein is the main active ingredient of soy isoflavones，which possesses many pharmacological effects such as anticancer，antibacterial and hypolipidemic. However it has the disadvantages of poor water solubility，poor lipid solubility，poor specificity，strong first pass effect and low bioavailability. The progress in improving its biological activity，bioavailability， and new activity by the structural modification of genistein has been made. In this paper，the progress of modification and activity of genistein was reviewed.

Abstract:Oxovanadium-graphitic carbon nitride thin nanosheet (VO@g?C3N4-T) had been prepared using urea and vanadium(IV)oxy acetylacetonate as precursors, compared with graphite nitride carbon (g?C3N4), oxovanadium-supported graphite nitride carbon (VO/g?C3N4).The structure and textural properties of the materials were thoroughly characterized by X-ray diffraction (XRD), N2 adsorption, scanning electron microscopeenergy(SEM), dispersive spectroscopy (EDS),inductively coupled plasma-atomic emission spectroscopy (ICP-AES). The photocatalytic performances of the samples were tested in the hydroxylation of benzene to produce phenol under visible light. The results showed that VO@g?C3N4-T possesses high specific surface area, the shape of nanosheets and favorable bandgap, lead to a very good photocatalytic activity for the hydroxylation of benzene via C?H activation under visible light. 98.4% conversion of phenol was obtained with the selectivity to phenol as high as 91.1%. There was the strong interaction between the graphitic carbon nitride surface and vanadium metal, which minimizes vanadium leaching. The catalyst also exhibited good reusability and was reused five times without a significant decrease in conversion and selectivity.

Abstract:In this study, silver nanowires-graphene nanocomposites (AgNWs-GNs) have been successfully fabricated via a facile solvothermal synthetic method. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-Visible absorption spectra (UV-Vis) were employed to characterize the structure and morphology of the as-prepared nanocomposites. The electrically conductive adhesive (ECA) was prepared by mixing AgNWs-GNs, micro-sized Ag flakes and epoxy together. The electrical and thermal properties of ECAs were tested after cured at 150 ?C for 2 h. The results show the AgNWs-GNs have a profound influence on the improvement of the electrical conductivity of the ECAs. When the content of the AgNWs-GNs was 0.9 wt%, the ECAs have the lowest volume resistivity of 4.34 ? 10-4 Ω?cm. Moreover, the ECAs filled with AgNWs-GNs still possessed the great thermal stability.

Abstract:Pd/γ-Al2O3-IM, Pd/γ-Al2O3-DP and Pd/γ-Al2O3-SA catalysts with 0.03 wt% Pd loading for catalytic oxidation of toluene were respectively prepared by the impregnation, deposition-precipition, and self-assembly methods using PdCl2 and Pd2(dba)3 as precursors. The temperature for conversion of 98% toluene (T98) over Pd/γ-Al2O3-SA catalyst was 220 ℃ under the conditions of toluene volume fraction at 0.1% and space velocity (SV) at 18000 mL/（g•h）, which was 40 and 75 ℃ lower than those of Pd/γ-Al2O3-DP and Pd/γ-Al2O3-IM. The catalysts were characterized by N2 adsorption-desorption, XRD, TEM, XPS, H2-TPR. The results indicated that Pd/γ-Al2O3-SA catalyst possessed the largest specific surface area (345 m2/g) and pore volume (0.52 cm3/g), the smallest average diameter (5.0 nm) of Pd nanopaticles (NPs), and the main active PdO species were well-dispersed on the surface of the γ-Al2O3 support. Besides, the strong metal-support interaction (SMSI) between PdO and γ-Al2O3 promoted its performance in catalytic oxidation of toluene.

Abstract:This article mainly explored the effects of combined high pressure and thermal treatment on physicochemical properties of rice for analyzing the application possibility rice products field. The results showed that the blue value of rice increased after it was treated by high pressure combined with heat, but contrary to the transparency. The suitable high pressure conditions can improve the solubility and gel expansion rate of rice. The gelatinization of rice increased significantly along with the rising of pressure, pressure-holding time, temperature and the amount of water. The crystal structure of it was transformed from the A-type crystallite to the V- type crystallite．Both temperature and pressure-holding time were positively correlated with iodine blue value, the amount of water had obviously positive correlation with iodine blue value (p<0.01), the light transmittance was negatively correlated with pressure (p<0.05), and significantly negatively correlated with pressure holding time, temperature and the amount of water (p<0.01). Swelling was positively correlated with solubility and light transmittance, but negatively correlated with iodine blue value (p<0.01). These data suggest that proper temperature and pressure can improve the physicochemical properties of rice and high pressure technology can be applied in rice products processing field.

Abstract:A super absorbent polymer, CMC-g-P(AM-co-NaAMC14S), was synthesized by a aqueous solution polymerization method with carboxymethylcellulose sodium (CMC), acrylamide (AM) and 2-acrylamido-tetradecane sulfonate (NaAMC14S) as monomers, ammonium persulfate (APS) as a initiator and N,N'-methylene bisacrylamide (MBA) as a crosslinking agent. The effects of crosslinking agent, initiator, carboxymethylcellulose sodium and 2-acrylamido-tetradecane sulfonate content on water absorbency. The structure of the product was characterized by infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The test results showed that absorbency of resin in deionized water and 0.9% NaCl water solution reached 1425.6g/g and 78.6g/g, respectively. And the resin was placed 2h at 30, 60, and 100℃, the water retention rate were 89.6%, 68.6% and 50.3%, respectively. In addition, the resin was centrifuged for 45 minutes at 1000rpm and 12000rpm, its water retention rate was 99.94% and 73.7%. It showed that the resin has high water absorption and good water retention property. Infrared spectroscopy analysis showed that AM and NaAMC14S were successfully grafted onto CMC. SEM analysis showed that the resin had better space network structure and increased its specific surface area. Therefore, the resin had better liquid absorbency.

Abstract:Abstract: A hierarchical porous HZSM-5@BMMs catalyst for the methanol to aromatics (MTA) was synthesized by epitaxial growth of the bimodal mesoporous silica shell on the core HZSM-5 zeolite. This catalyst was characterized with XRD, BET, NH3-TPD, SEM and TEM. The results indicated that HZSM-5@BMMs has the clear core-shell structure and the micro-bimodal meso porous structure, its pore size mainly distributed at 0.9, 2.2 and 5.3 nm. Compared with the HZSM-5, the specific surface area and the pore volume of HZSM-5@BMMs (510.8 m2/g, 0.399 cm3/g) are higher than those of HZSM-5 (408.4 m2/g, 0.190 cm3/g). However, the acid amount (0.573 mmol/g) of HZSM-5@BMMs is lower than HZSM-5 (amount is 0.883 mmol/g). The change of acid intensity is the same as this. The catalyst was applied in MTA, it was shown that the longevity of HZSM-5@BMMs in MTA under the same condition is 38 h longer than that of HZSM-5, and the highest yield of aromatics and the selectivity of BTX ( lightweight aromatics: benzene, toluene, xylene) on HZSM-5@BMMs were 25.7% and 55.3% respectively.

Abstract:Metal nanocrystals with unique surface plasmon resonance (SPR) are a good wide bandgap semiconductor visible light sensitized material. In this study, 0.3% mole ratio gold-modified titanium oxide (Au/TiO2) nanocomposite was synthesized by solvothermal and calcination. The as-synthesized Au/TiO2 nanocomposite was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), andultra-violet-visible (UV-vis) analysis. The results showed that the Au nanoparticles could significantly improve the visible light absorption properties of TiO2 at this lower content due to the strong surface plasmon resonance effect. With the increase of the calcinated temperature, the visiblelight absorption peak changed from ~ 550 nm to 670 nm, which is better for usage of the solar spectrum. The antibacterial activityfor Escherichia coli (E. coli) of Au/TiO2 nanocomposite shows that the mixed crystal Au/TiO2 with anatase and rutile phase, calcinated at 450 ℃, have the highest photocatalytic activity.

Abstract:The bacterial cellulose was fermented by Gluconacetobacter xylinum G31 strain in HS medium (Hestrin Schramm). The fermentation products were preliminarily proved to be cellulose by anthrone colorimetry method and enzymatic hydrolysis method. The morphologies and structures of BC were characterized by FTIR, SEM, XRD, CP/MAS 13C-NMR, DSC and TG and their properties were tested. The results showed that the fermentation product was bacterial cellulose.It had an ultrafine three-dimensional network structure and belonged to cellulose type I with a crystallinity of 92.42%, and had good water-holding and stretchability. At the same time, its molecular weight was measured (Mw=5737) and showed that it belongs to low molecular weight BC. Its oxygen transmission rate and water vapor transmission rate were 913.55?3.23 cm3/m2?24h?0.1MPa and 656.15?3.92 g/m2?24h respectively, indicating the BC has better water-holding capacity and lays a foundation for its application in the mask field.

Abstract:The reaction of oxidation of cyclohexane catalyzed by NHPI/SMA-Co multiple active site was studied in this paper. The optimum reaction conditions were as follows: 5mL of cyclohexane, 10mL of acetonitrile, the molar ratio of NHPI/SMA-Co is 10:3, HHPI/SMA-Co composite catalyst dosage is 0.04g, reaction temperature is 120℃, reaction pressure is 1.0MPa. React time is 6h, under these conditions, the conversion of cyclohexane was 19.84%, the selectivity of cyclohexanol was 22.23%, the selectivity of cyclohexanone was 38.65%, and the selectivity of KA was 60.88%. Repeated use experiments showed that the catalyst could be recycled.

Abstract:Lignin was extracted from the fermentation residue of corn stalk by using the alkaline-ethanol extraction method. The lignin was then liquefied by the polyhydric alcohols to obtain a lignin-based product which was further used to replace parts of polyether polyols for the preparation of rigid polyurethane foams. Results showed that lignin yield of alkaline-ethanol extraction method could reach 93.5% and purity of lignin was up to 94.1%. Liquefaction of lignin by using the PEG-400/glycerol as liquefying reagents yielded liquefaction efficiency as high as 99.5% and hydroxyl content of the liquefaction product was 360mgKOH/g. For the polyurethane preparation, rate of polyether polyols substitution by the liquefaction product could reach mass fraction 47%. At this point, density and compression strength of the obtained polyurethane foam were 48.6kg/m3 and 212kPa which met the national standards.

Abstract:We first prepared graphene oxide (GO) by an improved Hummers method, and then Ni-loaded TiO2/PEI/RGO nanocomposite catalyst was fabricated with the PEI modified graphene oxide suspension, NiCl2 and Ti(SO4)2 precursor through a hydrothermal method at 180 °C by using PEI as a linker among the components. The prepared samples were characterized by UV-visible absorption spectrum (UV-vis), Fourier transformed infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that Ni-loaded TiO2 nanoparticles were dispersed uniformly on the surface of graphene sheets and had smaller particle size. The nanocomposites were used as catalysts to remove 4-nitrophenol from wastewater with the help of NaBH4. The results indicated that this catalyst exhibited superior catalytic activity toward the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) with a high degradation efficiency above 98 % in aqueous solution, and the catalytic activity was still feasible even over ten cycles.

Abstract:Porous silica spheres were prepared via an acid-basic catalytic sol-gel method. The effects of some factors including water amount, ethanol amount, rotary evaporation temperature, stirring speed and porogen species on the morphology and particle size distribution of the silica spheres were investigated. The obtained silica spheres were characterized by electron microscope, BET measurements, titration method and infrared spectra. Moreover, after simple sedimentation and sorting, the silica spheres were functionalized and four packings were obtained, including C18 bonded silica gel, hydrophilic C18 bonded silica gel, aminopropyl bonded silica gel and ethylenediamine-N-propyl bonded silica gel. Results showed that the optimal conditions were as follows: n(H2O): n(TEOS)=6/4, V(EtOH):V(TEOS)=3/5, rotary evaporation temperature of 57 ℃, stirring speed of 2190 r/min and porogen of DMF. The obtained silica spheres were mostly regular-ball, the specific surface area was 464.11 m2/g and pore volume was 1.14 m3/g. The average pore size was 9.81 nm with a narrow pore size distribution and the concentration of Si-OH groups was up to 0.5450 mmol/g. The column efficiency of C18 bonded silica gel and hydrophilic C18 bonded silica gel were up to 53474/m and 86984/m (toluene), respectively, which had good resolution of analytes. The ion exchange capacity of aminopropyl bonded silica gel and ethylenediamine-N-propyl bonded silica gel were 1.44 and 1.22 mmol/g, respectively. Their absorption capacity to toluene-p-sulfonic acid was up to 240.8 and 217.6 mg/g.

Abstract:Fatty Acid Triethanolamine Ester(FTE) were synthesized by esterification of Fatty acid and triethanolamine. Fatty Acid Triethanolamine Mono-ester(FTME) were obtained by purification of column chromatography. FTMS were synthesized by esterification with of FTME and maleic anhydride and sulfonation with sodium sulfite. 4 types of FTME named as FTMS-1, FTMS-2, FTMS-3, FTMS-4, which are obtained basing on lauric acid, palmic acid, stearic acid and oleic acid respectively. The structures of 4 types of FTMS have been identified by FTIR, 1HNMR and amphoteric testing. The effect of chain length and unsaturation were explored on surface tension, Krafft point, particle size and emulsifying capacity. The results show that the products are amphoteric; Krafft point and Z-average increases with the increase of the chain length of alkyl, however, the unsaturation of alkyl is conducive to decrease Krafft point and Z-average; FTMS-1 and FTMS-4 have good surfactivity. Especially, the emulsifying capacity of FTMS-1(CMC=52.97mg/L, γCMC=36.1mN/m)(Separation time:148.8s) is similar to AEO-9(Separation time:139.0s), moreover, better than sodium dodecyl sulfate(Separation time:113.8s).

Abstract:he performance difference between polyester and cotton makes the recycle and reuse of the waste polyester-cotton blended textiles is complex. In the paper, hydrolysis method was used to the separation and recovery of waste polyester-cotton blended fabric, considering the different acid resistance of cotton fiber and polyester fiber and the characteristics of subcritical water. The effects of hydrothermal temperature, reaction time and hydrochloric acid concentration on the separation process were studied by using the polyester/cotton blended ratio of 80/20 waste fabrics as the raw material and HCL as catalysts, then the physicochemical properties of the products after hydrothermal reaction were characterized. The results indicated that the suitable hydrothermal process can be determined as follows: catalyst concentration of 1.5%, hydrothermal temperature of 150℃, and the reaction time is 3 h.The cotton fiber in blended fabric was hydrolyzed, and some of them hydrolyze to solid cellulose, the yield is about 48.21%; the other continues to hydrolyze to water-soluble carbohydrate. The recovery rate of polyester yarn after hydrothermal treatment is up to 96%, and the fracture strength is just reduced by 3%, which can be used directly. The hydrolysate containing water-soluble sugars can be recycled 5 times, which realizes the high value and green recycle of the waste polyester/cotton blended fabric.

Abstract:CuBr2-pyridine ionic liquids with different alkyl side chain and anion were used as the catalyst for one-step liquid-phase synthesis ofdimethoxymethane(DMM) by oxidation of methanol.And it was found that CuBr2-N-ethylpyridinium bromide exhibited the best catalytic activity.The Effects of composition and concentration of catalyst, reaction temperature, oxygen pressure andreaction timeon the reaction were investigated.The results show that the conversion of methanol could be 19.6% and the selectivity of DMM could reach 92.3% under the optimum conditions: n(N-ethylpyridiniumbromide):n(CuBr2) of 1:1,the catalyst concentration of 0.04g/mL, the reaction temperature of 130℃, the oxygen pressure of 3.0MPa and the reaction time of 4 hours. After being reused 9 times, the activity of CuBr2-N-ethylpyridinium bromide was still kept.

Abstract:To study the characterization of the inclusion compound of pyrene with methyl-β-cyclodextrin，which is formed by two ingredients(pyrene and methyl-β-cyclodextrin) and prepared with saturated solution method, the inclusion compound was prepared at difference conditions and studied by using ultraviolet spectroscopy(UV),infrared spectroscopy(IR),thermal gravimetric analysis(TG),differential thermal analysis(DSC), scanning electron microscope(SEM),X-ray diffraction(XRD) and other methods. According to the results, the inclusion efficiency of saturated aqueous solution method is higher (39%) at 25 ℃ conditions, At 240nm, the corresponding absorbance was the largest (1.62).With IR method, characteristic peak intensity of pyrene becomes lower and peak shape widens or displaces. With TG, DSC methods, pyrene occupies methyl-β-cyclodextrin cavity and the inclusion compound is formed ,and with XRD method, the inclusion compound shows a new set of characteristic diffraction peaks at 11.73 °, 18.04 °, 20.56 °. Conclusion shows that pyrene and methyl-β-cyclodextrin could form a stable inclusion compound when the temperature is 25℃. MCD increases the mass concentration of pyrene in water to 7.36 mg/L, which twice time of 15℃.

Abstract:In this work, amidoxime-modified polymer containing imidazolinyl (AM/AO/NIPA) was synthesized by acrylamide (AM), acrylonitrile (AN) and 1-(2-N-allyl ammonia ethyl)-2-oleic acid imidazole (NIPA). Then, the copolymer was characterized by FT-IR, FE-SEM and TG. By the static adsorption experiment, the adsorption capacity of Cu2+ by AM/AO/NIPA was investigated and was compared with typical adsorbent polyacrylamide (PAM); also, equilibrium kinetics and isotherms were obtained and further discussed adsorption mechanism. The results showed that the Cu2+ adsorption capacity of AM/AO/NIPA was seldom effected by the pH of the weak solution. The Cu2+ adsorption to AM/AO/NIPA reached equilibrium at 30 ℃ after 3 h, the pH of original solution is 5 and initial concentration is 100 mg/L; and the adsorption capacity is 37.32 mg/g at that time. The whole adsorption process is subject to the pseudo-second-order model, which is dominated by chemical adsorption. The experimental data of the adsorption of Cu2+ by AM/AO/NIPA can be fitted well by both Langmuir and Freundlich isotherm models. Moreover, the maximum adsorption capacity of Cu2+ by AM/AO/NIPA was 267.38 mg/g, three times higher than PAM, which is calculated by fitting Langmuir isotherm models. Furthermore, the amidoxime polymer AM/AO/NIPA remain up to 92.99% of its original adsorption capacity after five circles.