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Understanding Self-assembly,Colloidal Behavior and Rheological Properties of Graphene Derivatives for High-performance Supercapacitor Fabrication

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Chinese Journal of Polymer Science 2020年第5期38卷 423-434,I0005页

作者： Xia-Wei Yun Bo Tang Zhi-Yuan Xiong xiao-gong wang Department of Chemical Engineering Laboratory of Advanced Materials(Ministry of Education)Tsinghua UniversityBeijing 100084China Department of Chemical and Bio-molecular Engineering The University of MelbourneMelbourneVictoria 3010Australia

Graphene derivatives,such as graphene oxide(GO)and reduced graphene oxide(RGO),have been widely used as promising two-dimensional nanoscale building blocks due to their fascinating properties,cost-effective production,and good *** the intrinsic self-assembling,colloidal,and rheological features of graphene derivatives is of critical importance to establish the formation-structure-property relationship of graphene-based *** article reviews recent progresses in our studies of these interesting properties of graphene derivatives for developing high performance *** content is organized to include characteristics of the dispersions of graphene derivatives,self-assembly of nanosheets from liquid medium,colloidal behavior,rheological properties of the dispersions,processing methods based on the properties,and performance of the fabricated *** and RGO nanosheets are proved to form different types of assembled structures with unique morphologies,such as ultrathin layer-by-layer films,porous aggregates,and *** unique rheological properties of GO dispersions and hydrogels,feasible for both the traditional wet-processing and newly-developed technology like three-dimensional printing,are highlighted for their potential in structural manipulation and scalable fabrication of graphene-based *** research devoted to up-grading the performance of supercapacitors is presented in some details,which could be applicable for fabricating other graphene-based energy storage *** challenges and perspectives in our point of view are given in the last part of this feature article.

关键词： Graphene derivatives Self-assembly Colloids Rheology Processing Supercapacitor

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Synthesis, self-assembly and photo-responsive behavior of AB_2 shaped amphiphilic azo block copolymer

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Chinese Chemical Letters 2015年第7期26卷 857-861页

作者： Ren-Bo Wei xiao-gong wang Ya-Ning He Department of Chemical Engineering Key Laboratory of Advanced Materials (MOE) Tsinghua University

In this work, we report the synthesis of AB2 shaped amphiphilic azo block copolymer by macromolecular azo coupling reaction. The product and intermediates were characterized by various methods. The self- assembly in selected solvents and photo-responsive behavior of the copolymer were studied by means of UV-vis spectrophotometry and TEM. Spherical aggregates can be obtained by gradually adding water into the solution of this amphiphilic azo block copolymer. Upon irradiation with polarized UV （365 nm） light, the aggregates can be elongated in the polarized direction.

关键词： Azo block copolymerSelf-assemblySpherical aggregatesPhotoinduced deformationMacromolecular azo-coupling reaction

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ODD-EVEN EFFECT OF LYOTROPIC LIQUID CRYSTALLINE PROPERTIES OF AROMATIC-ALIPHATIC COPOLYAMIDES

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Chinese Journal of Polymer Science 2001年第1期19卷 103-106页

作者： xiao-zhong Lu Yan-qing Lian xiao-gong wang Qi-xiang Zhou De-shan Liu Department of Chemical Engineering and School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

A series of aromatic-aliphatic copolyamides containing different aliphatic diamine units was synthesized by low temperature solution *** liquid crystalline critical concentration(c^(*))and liquid crystalline critical temperature(T^(*))of these copolyamides exhibited an odd-even zigzag effect with the odd-even variation of carbon atom number in the aliphatic diamines used.

关键词： odd-even effect copolyamide lyotropic phase transition

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A novel fluorescent epoxy resin for organophosphate pesticide detection

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Chinese Chemical Letters 2015年第1期26卷 39-42页

作者： Hong-Xing Zhang Ren-Bo Wei Chuan-Zhi Chen Xin-Lin Tuo xiao-gong wang Department of Chemical Engineering Laboratory of Advanced Materials(MOE)Tsinghua University Department of Chemical Defense Institute of Chemical Defense

In this work,a novel bisbenzimidazolylpyridine-functionalized fluorescent epoxy resin was synthesized for organophosphate pesticide *** epoxy resin was characterized by Fourier-transform infrared spectroscopy（FT-IR）,proton nuclear magnetic resonance spectroscopy（~1H NMR）,gel permeation chromatography（CPC）,differential scanning calorimetry（DSC） and fluorescence *** loading with Eu（Ⅲ） ions,the epoxy resin showed a strong fluorescence *** fluorescence emission was observed to be instantaneously quenched when exposed to trace amount of diethyl chlorophosphate in *** Stern-Volmer quenching constants Ksv for quenching at617 nm was determined to be 0.377 × 10^3 L/*** sensitive emission-quenching function and easy processing nature of the polymeric support enable the resin to be a promising chemosensor candidate for the detection of organophosphates.

关键词： MeBIP Epoxy resin Europium complex Fluorescence quenching Organophosphates

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温度敏感水凝胶包覆长周期光纤光栅传感器研究

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高分子学报 2012年第3期22卷 307-312页

作者：张静王晓工清华大学化学工程系高分子研究所北京100084

以N-异丙基丙烯酰胺(NIPAM)为单体、N,N'-亚甲基双丙烯酰胺(MBAA)为交联剂、安息香二甲醚(DMPA)为引发剂,利用紫外光引发聚合制备了一系列温度敏感性聚(N-异丙基丙烯酰胺)(PNIPAM)水凝胶,并对其性能进行了测定.结果表明,PNIPAM水凝胶的... 详细信息

以N-异丙基丙烯酰胺(NIPAM)为单体、N,N'-亚甲基双丙烯酰胺(MBAA)为交联剂、安息香二甲醚(DMPA)为引发剂,利用紫外光引发聚合制备了一系列温度敏感性聚(N-异丙基丙烯酰胺)(PNIPAM)水凝胶,并对其性能进行了测定.结果表明,PNIPAM水凝胶的平衡膨胀比随着交联程度的变化而改变.当交联程度适当时,水凝胶可具有最大的溶胀比.在此研究基础上,利用浸渍提拉法在长周期光纤光栅(LPFG)包层外制备了PNIPAM水凝胶薄膜包覆层.研究了得到的LPFG传感器对温度和湿度的响应性,该类型传感器表现出对温度的灵敏响应性.

关键词： N-异丙基丙烯酰胺水凝胶长周期光纤光栅传感器温度敏感性

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腰接型侧链液晶弹性体研究进展

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高分子学报 2017年第10期27卷 1549-1556页

作者：刘曦阳王晓工清华大学化学工程系先进材料教育部重点实验室北京100084

液晶弹性体是交联型液晶大分子,兼具液晶取向有序性和交联聚合物熵弹性等特性,在传感器、触发器、微流体装置和仿生器件等方面具有很好的应用前景.制备液晶弹性体的微结构,探索其独特的刺激响应性,是目前液晶弹性体研究的重要方向.侧链... 详细信息

液晶弹性体是交联型液晶大分子,兼具液晶取向有序性和交联聚合物熵弹性等特性,在传感器、触发器、微流体装置和仿生器件等方面具有很好的应用前景.制备液晶弹性体的微结构,探索其独特的刺激响应性,是目前液晶弹性体研究的重要方向.侧链液晶弹性体的液晶相态类型取决于其液晶基元和主链的连接方式.腰接型侧链液晶弹性体倾向于形成向列型液晶相,具有较快的响应速度和形变程度,是一类独特的液晶弹性体.本文重点介绍腰接型液晶弹性体微结构(如微米柱、微米线等)的制备;利用金纳米粒子的光热转换效应,实现液晶弹性体光响应性的新途径;以及腰接型侧链液晶弹性体仿生微结构的功能性等.同时还对该领域的发展前景进行了展望.

关键词：液晶弹性体腰接型微结构光响应

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官能化度对环氧树脂类偶氮聚合物光致取向的影响

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高分子学报 2012年第5期22卷 580-586页

作者：王艳伟和亚宁王晓工清华大学化工系高分子研究所教育部先进材料重点实验室北京100084

利用光诱导双折射和偏振红外光谱法研究了偶氮官能化度对环氧树脂类偶氮聚合物BP-AZ-CA的光致取向行为的影响,重点研究了偶氮官能化度对偶氮生色团和聚合物主链的光致取向速度及饱和取向程度的影响规律.结果表明,随着偶氮官能化度的增加... 详细信息

利用光诱导双折射和偏振红外光谱法研究了偶氮官能化度对环氧树脂类偶氮聚合物BP-AZ-CA的光致取向行为的影响,重点研究了偶氮官能化度对偶氮生色团和聚合物主链的光致取向速度及饱和取向程度的影响规律.结果表明,随着偶氮官能化度的增加,偶氮生色团和聚合物主链的光致取向速度均降低,但二者的饱和取向程度增加.体系中氢键相互作用的增强是导致BP-AZ-CA的光致取向行为随偶氮官能化度增加而变化的原因之一.

关键词：偶氮聚合物环氧树脂类光致取向偏振红外官能化度

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Source of blood supply of liver cavernous hemangioma and sclerosis and embolization treatment

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World Journal of Gastroenterology 1997年第3期3卷 19-21页

作者： LI Gou Wei 1, ZHAO Zhong Rong 2, LI Bao Sheng 1, LIU xiao gong 1, wang Zhi Liang 1 and LIU Qing Feng 1

AIM To investigate the source of blood supply of carvenous hemangioma of liver (CHL) and provide a feasibile treatment for CHL via hepatic artery. METHODS Ⅰ. Origin of blood supply of CHL: portovenography, hepatic arteriography and portal vein staining were performed in 5 patients. Two casts of hepatic blood vessels from resected specimen were observed. Ⅱ. Clinical data: Among 75 patients (30 males, 45 females, aged 25～57 years with a mean of 37 4). 56 were of solitary type (44 on the right lobe, 12 on the left with 4 having intraparenchymatoma) and 19 were of multiple type (9 on the right, 2 the left, 8 whole liver). Twenty two patients were treated by sclerosis, 50 by embolization via hepatic artery and 3 were excised. RESULTS In 5 cases with portography, the contrast medium did not enter the tumor, the tumor appeared as low denty area and the intrahepatic branches of portal vein were pushed aside. In 5 cases with portal vein staining, the normal liver parenchyma was stained deep blue, and the tumor was not stained. The tumor area appeared as a round vacant cavity in 2 specimen casts. In 72 patients treated with sclerosis a or embolization via hepatic artery or through interventional method, the tumors diminished by 10%～30% in diameter and no tumors grew larger. CONCLUSION The blood supply of CHL originates from the hepatic artery. Tumors treated with sclerosis and emblization decreased in size or got fiberized.

关键词： Liver neoplasms/blood supply liver neoplasms/therapy hemangioma, cavernous/therapy embolization, therapeutic sclerotherapy

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The Mechanism of Heating Rate on the Secondary Recrystallization Evolution in Grain Oriented Silicon Steel

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 275-282页

作者： GAO Qian LI Jun wang Xianhui CAO Laifu gong Jian LI Bo Central Iron and Steel Research Institute Group Beijing 100081China Shougang Zhixin Electromagnetic Material R&D(Beijing)Co. Ltd.Beijing 101300China Beijing Shougang Co. Ltd.Qian’an 064404China

Grain-oriented silicon steels were prepared at different heating rates during high temperature annealing,in which the evolution of magnetic properties,grain orientations and precipitates were *** illustrate the Zener factor,the diameter and number density of precipitates of interrupted testing samples were statistically *** effect of precipitate ripening on the Goss texture and magnetic property was *** indicated that the trend of Zener factor was similar under different heating rates,first increasing and then decreasing,and that the precipitate maturing was greatly inhibited as the heating rate *** recrystallization was developed at the temperature of 1010℃when a heating rate of 5℃/h was used,resulting in Goss,Brass and{110}oriented grains growing abnormally and a magnetic induction intensity of ***,increasing the heating rate to 20℃/h would inhibit the development of undesirable oriented grains and obtain a sharp Goss ***,when the heating rate was extremely fast,such as 40℃/h,poor secondary recrystallization was developed with many island grains,corresponding to a decrease in magnetic induction intensity to 1.87 *** a suitable heating rate of 20℃/h,the sharpest Goss texture and the highest magnetic induction of 1.94 T with an onset secondary recrystallization temperature of 1020℃were found among the experimental variables in this *** heating rate affected the initial temperature of secondary recrystallization by controlling the maturation of precipitates,leading to the deviation and dispersion of Goss texture,thereby reducing the magnetic properties.

关键词： high temperature annealing heating rate secondary recrystallization grain oriented silicon steel

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Electrochemical conversion of methane to bridge the gap in the artificial carbon cycle

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Journal of Energy Chemistry 2025年第1期100卷 286-308页

作者： Yuhao Peng Yuefeng Song Ihar Razanau Juanxiu xiao Wei xiao Di Hu Guoxiong wang College of Chemistry and Molecular Sciences Hubei Key Laboratory of Electrochemical Power Sources Wuhan University State Key Laboratory of Catalysis Dalian National Laboratory for Clean Energy iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Laboratory of Physical-Chemical Technologies SSPA Scientific and Practical Materials Research Centre of NAS of Belarus State Key Laboratory of Marine Resources Utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University Department of Chemical and Environmental Engineering University of Nottingham Ningbo China

Methane, an abundant one-carbon（C1） resource, is extensively used in the industrial production of vital fuels and value-added chemicals. However, current industrial methane conversion technologies are energy-and carbon-intensive, mainly due to the high activation energy required to break the inert C–H bond, low selectivity, and problematic side reactions, including CO2emissions and coke deposition. Electrochemical conversion of methane（ECM） using intermittent renewable energy offers an attractive solution, due to its modular reactor design and operational flexibility across a broad spectrum of temperatures and pressures. This review emphasizes conversion pathways of methane in various reaction systems, highlighting the significance and advantages of ECM in facilitating a sustainable artificial carbon cycle. This work provides a comprehensive overview of conventional methane activation mechanisms and delineates the complete pathways of methane conversion in electrolysis contexts. Based on surface/interface chemistry, this work systematically analyzes proposed reaction pathways and corresponding strategies to enhance ECM efficiency towards various target products, including syngas, hydrocarbons, oxygenates, and advanced carbon materials. The discussion also encompasses opportunities and challenges for the ECM process, including insights into ECM pathways, rational electrocatalyst design, establishment of benchmarking protocols, electrolyte engineering, enhancement of CH4conversion rates, and minimization of CO2emission.

关键词： Activation energy

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