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Mo@PANI-catalyzed oxidative deoximation reaction

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Chinese Chemical Letters 2024年第2期35卷 407-410页

作者： Yiyang Zhang Wen Li Zuofeng Hu Xiaobi Jing Lei Yu School of Mechanical Engineering Yangzhou UniversityYangzhou 225127China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Yangzhou Yangzi Auto Interior & Exterior Co. Ltd.Yangzhou 225119China

Deoximation is an important transformation in synthetic *** can be employed in protection,characterization and purification of the carbonyls,and in the synthesis of ketones from non-carbonyl *** the field,oxidative deoximation reaction can utilize the driving force caused by the oxidation process so that the reaction can occur under relatively mild ***,we designed and prepared polyaniline-supported molybdenum(Mo@PANI)just by immersing PANI into the EtOH/H_(2)O solution of MoCl_(5).The material was successfully applied as the efficient catalyst for oxidative deoximation reactions,which were performed in ethanol using H_(2)O_(2)as the clean *** substrate scope of the reaction was *** could be applied on heterocycle-containing substrates,making this protocol preferable for pharmaceutical intermediate *** Mo is a necessary trace element for both animals and plants,this method is environment-friendly and is suitable for large-scale *** work as the first example of Mo-catalyzed oxidative deoximation reaction may inspire novel ideas for both catalyst design and synthetic process development.

关键词： Molybdenum polyaniline Oxidation Deoximation Carbonyl

Improving the electroconductivity and mechanical properties of cellulosic paper with multi-walled carbon nanotube/polyaniline nanocomposites

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Journal of Bioresources and Bioproducts 2016年第1期1卷 48-54页

作者： Xiaochuang Shen Yanjun Tang Dingding Zhou Junhua Zhang Daliang Guo Gustavo Friederichs Key Laboratory of Advanced Textile Materials and Manufacturing Technology Ministry of EducationZhejiang Sci-Tech UniversityHangzhou 310018China Key Lab of Pulp and Paper Science&Technology of Ministry of Education Qilu University of TechnologyJinan 250353China Department of Chemical Engineering&Limerick Pulp and Paper Centre University of New BrunswickFrederictonNew BrunswickCanadaE3B 5A3 Department of Forestry Santa Catarina State UniversityLages-SCZip Code 88.523-000Brazil

Cellulose is the most abundant renewable polymer in the nature,and cellulosic paper is widely used in our daily *** electroconductivity to cellulosic paper would allow this conventional material to hold great promise for a wide range of energy-related *** the present work,multi-walled carbon nanotube(MWCNT)/polyaniline(PANI)nanocomposites were synthesized via in situ oxidation polymerization process and characterized by FT-IR and ***,the application of the synthesized MWCNT/PANI nanocomposites as a wet-end filler for the production of electro-conductive paper was demonstrated/*** showed that the cellulosic paper was imparted with an electro-conductivity of up to 0.14 S·m^(-1) while exhibiting a pronounced improvement in mechanical properties as a function of the added MWCNT/PANI nanocomposites.

关键词： Carbon nano tubes polyaniline Nanocomposites Oxidative polymerization Wet-lay process Cellulosic paper electro-conductivity Mechanical strength

Three-dimensional Porous Graphene/polyaniline Hybrids for High Performance Supercapacitor Electrodes

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Research and Application of Materials Science 2020年第1期2卷 17-22页

作者： Zhaoxia HOU Peng SHI Shengnan ZOU Liaoning Province Key Laboratory of Micro-nano Materials Research and Development School of Mechanical EngineeringShenyang UniversityShenyang 110044China

Graphene-based composites took extensive attraction as electrodes for supercacitors these ***-dimensional cross-linking porous graphene(3D rGO-m)was obtained by KOH activation to graphene modified by 1,2,4-triaminobenzene.3D porous graphene/polyaniline hybrids(3D rGO-m/PANI)was prepared by the in-situ chemical oxidative *** rGO-m are reconstructed from 2D to 3D porous structure after KOH *** PANI nanorod arrays are successfully decorated on the surface of the 3D porous graphene *** specific capacitance of the 3D rGO-m/PANI hybrids reach 985 F/g at 0.5 A/*** capacitance retention of 3D rGO-m/PANI maintains 90%of its initial capacity after 1000 cycles,while rGO-m/PANI only keeps 83%of its initial capacity,the cycling stability of both hybrids are higher than that of pure PANI(69%).

关键词： three dimension porous graphene polyaniline hybrid materials supercapacitor

SYNTHESIS AND PROPERTIES OF ORGANO-FLY ASH/POLY ANILINE WITH CORE/SHELL STRUCTURE BASED ON EMULSION POLYMERIZATION

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Chinese Journal of Polymer Science 2012年第6期30卷 808-814页

作者：雷西萍 Key Laboratory of Western Architecture and Technology School of Materials Science and EngineeringXi'an University of Architecture and Technology

Organo-fly ash （OFA） was prepared with pretreated fly ash （FA） and hexadecyltrimethyl ammonium bromide （HDTMAB）, and the composites composed of OFA and polyaniline were obtained by emulsion polymerization at different OFA weight ratios （2.0 wt%, 5.0 wt%, 10.0 wt%, 15.0 wt% and 20.0 wt%） in the presence of dodecylbenzenesulfonic acid as dopant and emulsifier. A polymerization procedure was supposed. The electrical conductivities of the composites were tested by the four-probe technique. The chemical structure and crystallinity of the composites were confirmed by FT-IR and X-ray diffraction, respectively. Morphologies of FA, OFA and the composites were observed by SEM. The element analysis was performed by energy dispersive spectrometry. The thermal stability of the composites was analyzed by TGA. The results showed that the electrical conductivity of the composites decreased with increasing the feed weight ratio of OFA, and the lowest value was 0.62 S/cm. HDTMAB and PAn were just adsorbed on the surface of FA and OFA, respectively according to the physical adsorption without destroying the crystalline structure of FA or OFA. The surface became smoother after organification of FA by using HDTMAB, and its content on FA surfaces was about 26.9 wt%. The core/shell structure of the composite was observed by SEM analysis. The composites showed a higher thermal stability than pure PAn by introduction of OFA into this polymerization system, the heat stability of PAn was increased by decreasing 31.8 wt% of weight loss after introducing 20 wt% of OFA.

关键词： Fly ash polyaniline Hexadecyltrimethyl ammonium bromide Core/shell Emulsion polymerization.

HYBRID AND CHARACTERISTIC OF polyanilineBARIUM TITANATE NANOCOMPOSITE PARTICLES

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Journal of Wuhan University of Technology(Materials Science) 2000年第3期15卷 62-66页

作者：龚荣洲 Wuhan University of Technology China State Key Lab. Adv. Technol. Mat. S. Wuhan University of Technology Wuhan 430070 China

polyaniline-barium titanate (PAn-Ba-TiO3) ultrafine composite particles were prepared by the oxidative polymerization of aniline with H2O2 while barium titanate nanoparticles were synthesized with a sol-gel method. The infrared spectrogram shows that the polymerization of PAn in the hybrid process of PAn-BaTiO3 is similar with the polymeric process of pure aniline, and there is interaction of PAn and BaTiO3 in the PAn-Ba-TiO3. SEM and TEM results show that the average diameter of the composite particles is 1.50μm and the diameters of BaTiO3 nanoparticles are 5 - 15 nm in the composite particle. The electrical conductivity of the ultrafine com-posite particles is transformable from 10°to 10-11S/cm by equilibrium doping or dedoping method using various concentration of HCl or NaOH solutions.

关键词： ultrafine composite particles barium titanate polyaniline composite in situ

Cryoactivated proton-involved redox reactions enable stable-cycling fiber cooper metal batteries operating at-50℃

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Journal of Energy Chemistry 2023年第5期80卷 758-767,I0016页

作者： Changyuan Yan Zixuan Chen Hongzhong Deng Hao Huang Xianyu Deng Shenzhen Key Laboratory of Advanced Materials School of Materials Science and EngineeringHarbin Institute of TechnologyShenzhen 518055GuangdongChina

Fiber-shaped batteries that feature outstanding flexibility,light weight,and wovenability are extremely attractive for powering smart wearable electronic textiles,which further stimulates their demand in extreme ***,there are rare reports on ultralow-temperature fiber batteries to *** is mainly attributed to the poor conductivity of electrodes and freezing of electrolytes that restrain their satisfactory flexible operation in cold ***,we propose a fiber cooper metal battery consisting of a conductive polyaniline cathode,an anti-freezing Cu(BF4)2+H3PO4electrolyte and an acidresistant copper wire anode,which can withstand various deformations at ultralow ***,enhanced capacity and cyclic stability can be achieved by cryoactivated abundant reactive sites in the polyaniline,while benefiting from redox reactions with rapid kinetics involving protons rather than copper ***,this well-designed polyaniline/Cu fiber battery delivers excellent flexibility without obvious capacity decay after being bent at-30℃,as well as a remarkable discharge capacity of 120.1 mA h g-1and a capacity retention of 96.8%after 2000 cycles at-50℃.The fiber batteries integrated into wearable textiles can power various electronic *** performances greatly outperform those of most reported ***,this work provides a promising strategy toward applications of cryogenic wearable energy storage devices.

关键词： Cryoactivated sites Proton-involved redox reactions Fiber cooper metal battery polyaniline Cyclic stability Low temperature

Elastic Buffering Layer on CuS Enabling High-Rate and Long-Life Sodium-Ion Storage

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Nano-Micro Letters 2022年第12期14卷 27-39页

作者： Yuanhua Xiao Feng Yue Ziqing Wen Ya Shen Dangcheng Su Huazhang Guo Xianhong Rui Liming Zhou Shaoming Fang Yan Yu Key Laboratory of Surface and Interface Science and Technology Zhengzhou University of Light IndustryZhengzhou 450002People’s Republic of China Institute of Nanochemistry and Nanobiology School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444People’s Republic of China Institute School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006People’s Republic of China Hefei National Research Center for Physical Sciences at the Microscale Department of Materials Science and EngineeringNational Synchrotron Radiation LaboratoryCAS Key Laboratory of Materials for Energy ConversionUniversity of Science and Technology of China.HefeiAnhui 230026People’s Republic of China

The latest view suggests the inactive core,surface pulverization,and poly sulfide shuttling effect of metal sulfides are responsible for their low capacity and poor cycling performance in sodium-ion batteries(SIBs).Whereas overcoming the above problems based on conventional nanoengineering is not efficient *** this work,erythrocyte-like CuS microspheres with an elastic buffering layer of ultrathin poly aniline(PANI) were synthesized through one-step selfassembly growth,followed by in situ polymerization of *** CuS@PANI is used as anode electrode in SIBs,it delivers high capacity,ultrahigh rate capability(500 mAh gat 0.1 A g,and 214.5 mAh gat 40 A g),and superior cycling life of over 7500 cycles at 20 A g.A series of in/ex situ characterization techniques were applied to investigate the structural evolution and sodium-ion storage *** PANI swollen with electrolyte can stabilize solid electrolyte interface layer,benefit the ion transport/charge transfer at the PANI/electrolyte interface,and restrain the size growth of Cu particles in confined ***,finite element analyses and density functional simulations confirm that the PANI film effectively buffers the volume expansion,suppresses the surface pulverization,and traps the poly sulfide.

关键词： CuS Elastic buffering layer polyaniline Long life Sodium-ion batteries

High Performance Soft Electrochemical Actuators Based on Hierarchical Conductive Polymer Ionogels

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Journal of Bionic Engineering 2023年第6期20卷 2755-2763页

作者： Hongwei Hu Shengtao Zhang Yan Li Xinghao Hu Lin Xu Aixin Feng Guanggui Cheng Jianning Ding Zhejiang Provincial Key Laboratory of Laser Processing Robotics College of Mechanical and Electrical EngineeringWenzhou UniversityWenzhou325035China Institute of Intelligent Flexible Mechatronics Jiangsu UniversityZhenjiang212013China School of Mechanical Engineering Jiangsu University of Science and TechnologyZhenjiang212100China School of Mechanical Engineering Yangzhou UniversityYangzhou225127China Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering Changzhou UniversityChangzhou213164China Ruian Graduate School of Wenzhou University Ruian325207ZhejiangChina

Electrochemical actuators based on conductive polymers are emerging as a strong competitive in the field of soft actuators because of their intrinsically conformable/elastic nature,low cost,low operating voltage and air-working *** development has shown that adding electroactive materials,such as CNT and graphene,can improve their actuation *** the complex material systems used,their output strains(one of the key factors)are generally lower than 1%,which limited further applications of them in multiple ***,we report soft electrochemical actuators based on conductive polymer ionogels by embedding polyaniline particles between the PEDOT:PSS *** show that such a hierarchical structure not only leads to a high conductivity(1250 S/cm)but also improved electrochemical *** a low operating voltage of 1 V,the maximum strain of these soft actuators reaches an exceptional value of 1.5%,with a high blocking force of 1.3 *** these high-performance electrochemical actuators,we demonstrate soft grippers for manipulating object and a bionic flower stimulated by an electrical *** work sets an important step towards enabling the enhanced performance of electrochemical actuators based on conductive polymers with designed microstructures.

关键词： Conductive polymer Soft actuator polyaniline PEDOT:PSS Bioinspired actuator

聚苯胺-二氧化钛复合光催化剂用于光催化还原六价铬离子

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Science Bulletin 2020年第2期65卷 105-112,87页

作者：邓晓明陈瑶闻洁雅徐赟朱建卞振锋 The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials Shanghai Normal University

通过设计高效的光催化剂,将六价铬还原为三价铬已成为近年来研究的热点.光催化还原六价铬的效率在很大程度上取决于六价铬离子在光催化剂表面的吸附和反应后三价铬离子在催化剂表面的脱附能力.聚苯胺-二氧化钛复合材料可以有效提高六价... 详细信息

通过设计高效的光催化剂,将六价铬还原为三价铬已成为近年来研究的热点.光催化还原六价铬的效率在很大程度上取决于六价铬离子在光催化剂表面的吸附和反应后三价铬离子在催化剂表面的脱附能力.聚苯胺-二氧化钛复合材料可以有效提高六价铬离子的光催化还原性能和稳定性.通过调节聚苯胺(PANI)在二氧化钛(MT)表面修饰的含量,本文研究了聚苯胺的厚度对光催化还原六价铬的活性和光催化剂稳定性的影响.反应结果表明,在紫外光照射下,当聚苯胺的修饰量为3.0 wt%时,六价铬的还原率为100%,最大反应速率为0.62 min–1.结果表明,经过10次循环后,还原性能依旧保持在100%.主要原因是二氧化钛表面修饰的聚苯胺富含氨基基团,在酸性反应体系中,表面带正电,可以有效吸附六价铬阴离子,使产物三价铬阳离子迅速离开反应界面,从而促进了光催化剂的性能.同时,二氧化钛与聚苯胺的界面形成相互作用,促进了光生电荷的分离,提高了光催化还原活性.本研究为设计高效光催化剂用于净化处理六价铬离子开辟了新的途径.

关键词： polyaniline Titanium dioxide Photo-reduction Hexavalent chromium Trivalent chromium