Improvement in synthetic fiber based composites is a hot topic in the material area.The incompatibility between the surfaces of synthetic fibers is a significant challenge due to fibers hydrophobic property.In this st...Improvement in synthetic fiber based composites is a hot topic in the material area.The incompatibility between the surfaces of synthetic fibers is a significant challenge due to fibers hydrophobic property.In this study,PET(polyethylene terephthalate) fibers based on low hydrophilic were slightly treated with NaOH or sodium dodecyl benzene sulfonate(SDBS).SEM images showed that there were some pits on the surface of PET fibers treated by NaOH,while PET fibers treated by SDBS became smoother.The peaks at 3725 cm^(-1) and 3628 cm^(-1) were generated for PET fibers treated by NaOH,which was attributed to—OH produced from the ester group hydrolysis,but no same peak is shown for the treated ones by SDBS.Meanwhile,the crystallinity indices of the treated PET fibers slightly decreased.Compared with original PET fibers,the formation of sheet made from PET fibers treated by NaOH became worse,but that from SDBS treated PET fibers became better.展开更多
Fractal-structured silver particles(FSSPs)are conductive materials with a micron-scale trunk and nanoscale branches,and are characterized with high electrical conductivity and high connectivity.In this study,FSSPs wer...Fractal-structured silver particles(FSSPs)are conductive materials with a micron-scale trunk and nanoscale branches,and are characterized with high electrical conductivity and high connectivity.In this study,FSSPs were added to an aqueous additive solution for synthesizing a conductive ink,which was used to prepare two types of printing electrodes via screen printing.The first type included two flexible printed electrodes(FPEs):an FPE on a polyethylene terephthalate(PET)film and an FPE on paper.The second one was a polydimethylsiloxane(PDMS)-embedded FPE.The PETbased FPE exhibited high electrochemical stability when its sheet resistance was 0.38Ω/sq for a 50%(w/w)content of FSSPs in the prepared conductive ink.Moreover,the embedded FPE demonstrated excellent mechanical properties and high chemical stability.In addition,the embedded structure was endowed with stretchability,which is important for different devices,such as flexible biomedical sensors and flexible electronics.展开更多
Three-dimensional porous paper was prepared by using polysulfonamide (PSA) fiber and pulp as the raw materials. The effect of PSA fiber to pulp ratios on the mechanical strength and adsorption properties (using methyl...Three-dimensional porous paper was prepared by using polysulfonamide (PSA) fiber and pulp as the raw materials. The effect of PSA fiber to pulp ratios on the mechanical strength and adsorption properties (using methyl orange and rhodamine B dyes in their aqueous phase) of the paper were studied. The results showed that the tensile strength and elongation characteristics decreased as the PSA fiber to pulp ratio increased, while the tear strength increased. PSA paper showed good adsorption performance for both methyl orange and rhodamine B, with the adsorption process conforming to the pseudo-second-order and Langmuir isotherm models, indicating monolayer chemical adsorption. The study has provided an improved theoretical and scientific basis for the further development and application of PSA paper.展开更多
将制氢与间歇性可再生能源驱动的生物质电催化转化结合起来,是获得氢能和高附加值化学品的有效途径.然而,开发具有明确结构-性能关系的强效多功能电催化剂仍然是一个相当大的挑战.本文巧妙地开发了一种阳离子和阴离子共掺策略,以协同调...将制氢与间歇性可再生能源驱动的生物质电催化转化结合起来,是获得氢能和高附加值化学品的有效途径.然而,开发具有明确结构-性能关系的强效多功能电催化剂仍然是一个相当大的挑战.本文巧妙地开发了一种阳离子和阴离子共掺策略,以协同调控NiFe层状双氢氧化物的电子结构,明显促进了催化活性位点的暴露,从而提高了葡萄糖电催化转化制氢的性能.实验结果表明,杂原子Cr和S的加入促进了Ni(OH)_(2)(Ni^(2+))/NiOOH(Ni^(3+))的可逆氧化还原,显著提高了葡萄糖的电荷转移和吸附能力.在葡萄糖电催化转化反应中,达到10 mA cm^(−2)的电压仅为1.219 V,比析氧反应低0.226 V.此外,Cr,S-NiFe/NF在双电极电解槽中表现出显著的葡萄糖电催化转化性能和产氢性能,达到10 mA cm^(−2)电流密度的电势仅为1.337 V,同时在阳极产生增值的甲酸盐,产氢率较电解水制氢提高了9倍.该生物质转化制氢耦合电催化剂提高了制氢效率,并获得了高附加值化学品.展开更多
2017 International Conference on Forest&Paper New Technology and Research(2017 ICFP)was held on September 11-12,2017,in in Xi’an of China.This conference attracted about 150 attendees from 6 countries,14 universi...2017 International Conference on Forest&Paper New Technology and Research(2017 ICFP)was held on September 11-12,2017,in in Xi’an of China.This conference attracted about 150 attendees from 6 countries,14 universities,and about 30 pulp/paper-related companies.展开更多
基金financially supported by the innovation project of science and technology plan of Shaanxi Province in 2015(No.2015KTCQ01-44)
文摘Improvement in synthetic fiber based composites is a hot topic in the material area.The incompatibility between the surfaces of synthetic fibers is a significant challenge due to fibers hydrophobic property.In this study,PET(polyethylene terephthalate) fibers based on low hydrophilic were slightly treated with NaOH or sodium dodecyl benzene sulfonate(SDBS).SEM images showed that there were some pits on the surface of PET fibers treated by NaOH,while PET fibers treated by SDBS became smoother.The peaks at 3725 cm^(-1) and 3628 cm^(-1) were generated for PET fibers treated by NaOH,which was attributed to—OH produced from the ester group hydrolysis,but no same peak is shown for the treated ones by SDBS.Meanwhile,the crystallinity indices of the treated PET fibers slightly decreased.Compared with original PET fibers,the formation of sheet made from PET fibers treated by NaOH became worse,but that from SDBS treated PET fibers became better.
基金This work was supported by the International Joint Research Center for Biomass Chemistry and Materials,Shaanxi International Science and Technology Cooperation Base(2018GHJD-19)the Shaanxi Key Industry Innovation Chain Projects(2020ZDLGY11-03)+2 种基金the Science and Technology Plan of Weiyang District of Xi'an(201910)the Scientific Research Plan Projects of Shaanxi Education Department(19JK0131)The project was also supported by the Foundation of Key Laboratory of Pulp and Paper Science and Technology of the Ministry of Education/Shandong Province of China(KF201814).
文摘Fractal-structured silver particles(FSSPs)are conductive materials with a micron-scale trunk and nanoscale branches,and are characterized with high electrical conductivity and high connectivity.In this study,FSSPs were added to an aqueous additive solution for synthesizing a conductive ink,which was used to prepare two types of printing electrodes via screen printing.The first type included two flexible printed electrodes(FPEs):an FPE on a polyethylene terephthalate(PET)film and an FPE on paper.The second one was a polydimethylsiloxane(PDMS)-embedded FPE.The PETbased FPE exhibited high electrochemical stability when its sheet resistance was 0.38Ω/sq for a 50%(w/w)content of FSSPs in the prepared conductive ink.Moreover,the embedded FPE demonstrated excellent mechanical properties and high chemical stability.In addition,the embedded structure was endowed with stretchability,which is important for different devices,such as flexible biomedical sensors and flexible electronics.
基金supported by the International Joint Research Center for Biomass Chemistry and Materials, Shaanxi International Science and Technology Cooperation Base (2018GHJD-19)the Key Scientific Research Plan (Key Laboratory) of Shaanxi Provincial Education Department (No.17JS016)by the Natural Science Basic Research Plan, of Shaanxi Province, China (Grant No. 2017JQ2019)
文摘Three-dimensional porous paper was prepared by using polysulfonamide (PSA) fiber and pulp as the raw materials. The effect of PSA fiber to pulp ratios on the mechanical strength and adsorption properties (using methyl orange and rhodamine B dyes in their aqueous phase) of the paper were studied. The results showed that the tensile strength and elongation characteristics decreased as the PSA fiber to pulp ratio increased, while the tear strength increased. PSA paper showed good adsorption performance for both methyl orange and rhodamine B, with the adsorption process conforming to the pseudo-second-order and Langmuir isotherm models, indicating monolayer chemical adsorption. The study has provided an improved theoretical and scientific basis for the further development and application of PSA paper.
基金supported by the National Natural Science Foundation of China(22078187 and 22008149)the International Joint Research Center for Biomass Chemistry and Materials,Shaanxi International Science and Technology Cooperation Base(2018GHJD-19)+1 种基金Shaanxi Key Industry Innovation Chain Projects(2020ZDLGY11-03)Shaanxi Provincial Department of Education General Special Scientific Research Program(20JK0537).
文摘将制氢与间歇性可再生能源驱动的生物质电催化转化结合起来,是获得氢能和高附加值化学品的有效途径.然而,开发具有明确结构-性能关系的强效多功能电催化剂仍然是一个相当大的挑战.本文巧妙地开发了一种阳离子和阴离子共掺策略,以协同调控NiFe层状双氢氧化物的电子结构,明显促进了催化活性位点的暴露,从而提高了葡萄糖电催化转化制氢的性能.实验结果表明,杂原子Cr和S的加入促进了Ni(OH)_(2)(Ni^(2+))/NiOOH(Ni^(3+))的可逆氧化还原,显著提高了葡萄糖的电荷转移和吸附能力.在葡萄糖电催化转化反应中,达到10 mA cm^(−2)的电压仅为1.219 V,比析氧反应低0.226 V.此外,Cr,S-NiFe/NF在双电极电解槽中表现出显著的葡萄糖电催化转化性能和产氢性能,达到10 mA cm^(−2)电流密度的电势仅为1.337 V,同时在阳极产生增值的甲酸盐,产氢率较电解水制氢提高了9倍.该生物质转化制氢耦合电催化剂提高了制氢效率,并获得了高附加值化学品.
文摘2017 International Conference on Forest&Paper New Technology and Research(2017 ICFP)was held on September 11-12,2017,in in Xi’an of China.This conference attracted about 150 attendees from 6 countries,14 universities,and about 30 pulp/paper-related companies.
