检索结果-南通市图书馆

Facile and environment friendly synthesis of hierarchical BiOCl flowery microspheres with remarkable photocatalytic properties

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2014年第8期59卷 802-809页

作者： jiaqin liu Jiajia Hu Lili Ruan Yucheng Wu School of Materials Science and Engineering Hefei University of Technology Anhui Key Laboratory of Advanced Functional Materials and Devices

A facile and environment friendly approach to synthesis of unique hierarchical BiOCl flowery microspheres(FMs)using a biodegradable surfactant polyvinyl alcohol(PVA)was reported herein for the first *** to the BiOCl nanosheets synthesized in the absence of PVA,hierarchical BiOCl FMs consist of large amounts of interwoven polycrystalline nanosheets that assemble into a porous flowery *** formation mechanism of the hierarchical BiOCl FMs was also proposed,whereby PVA was believed to play a key role in the crystal growth and the formation of the final *** with TiO2-P25 and BiOCl nanosheets,hierarchical BiOCl FMs displayed remarkably enhanced photocatalytic activity,and20 mg of BiOCl FMs could completely degrade 50 mL of methyl orange solution(20 mg/L)within 30 min under UVlight *** to the comprehensive analysis,it can be concluded that the larger specific surface area,porosity,suitable band gap,and the enhanced light absorption capacity may contribute to the remarkably enhanced photocatalytic *** facile and green approach to fabricating hierarchical BiOCl FMs would give vital clues to develop new route for synthesizing other hierarchical structured materials.

关键词：环境友好光催化性能合成轻便型光催化活性花球表面活性剂可生物降解

Ionic Electroactive Polymers Used in Bionic Robots： A Review

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2018年第5期15卷 765-782页

作者： Longfei Chang Yanfa liu Qian Yang Linfeng Yu jiaqin liu Zicai Zhu Pin Lu Yucheng Wu Ying Hu Institute of Industry and Equipment Technology Hefei University of Technology Hefei 230009 China School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China School of Mechanical Engineering Xi' an Jiaotong University Xi' an 710049 China Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei 230009 China

Ionic electroactive polymers （IEAPs） are a category of intelligent soft materials exhibiting large displacement under electric excitation, based on inner ion or solvent transport. Due to their unique advantages such as flexibility, low driving voltage, large bending displacement and aquatic-environment adaptability, IEAPs have been documented as very promising actuators for the applications in bionic robots. This review presents an analysis to the current research status of IEAPs exploited in bionic robots. According to the specific bionic parts, those robots are divided into four classes： imitation of fins, limbs, joints and trunks. Their dimension, weight, voltage amplitude, frequency and maximum speed were summarized to show the optimum design range. The results show that the approach velocity of the current robots were higher （〉 35 mm· s-1） when the robot weighted 60 g - 180 g and the body was 90 mm - 130 mm long. For voltage from 1 V - 3 V and frequencies from 0.7 Hz - 1.2 Hz, the speed was relatively higher （〉 35 mm·s-1）.To some extent, the maximum speed decreases when the area of the IEAP material used in bionic robot increases. For underwater circumstances, IEAP materials are most suitable for designing bionic robots swimming with Body and/or Caudal Fin （BCF）. This review provides important guidance for the design of lEAP bionic robots.

关键词： quadruped locomote ionic electroactive polymer bionic robots soft actuator

Retention Mechanism of Phenolic Compounds in Subcritical Water Chromatography

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2015年第1期31卷 103-106页

作者： WUYichao DENG Xiuqing MAO Yinchun ZHANG Yan liu jiaqin RONG Li XU Zhihong School of Physics and Chemistry Xihua University Chengdu 610039 P. R. China

The transfer enthalpies and entropies of hydroxyl and nitryl in different mobile phase systems were compared by van＇t Hoff curve. Results suggest that the presence of acetonitrile and methanol in the mobile phase may decrease the interaction of solute and stationary phase with respect to subcritical water, thereby reducing the contribution of enthalpy to the retention. Retention mechanisms of phenolic compound appear to be more similar in subcritical water and water/methanol systems on the PRP-1 column. Hydrogen bond in subcritical water system plays a very important role in the retention of the phenols.

关键词： Subcritical water chromatography Phenols Retention mechanism Hydrogen bond

Electrochemical hydrogenation of mixed-phase TiO2 nanotube arrays enables remarkably enhanced photoelectrochemical water splitting performance

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2018年第3期63卷 194-202页

作者： jiaqin liu Mengjia Dai Jian Wu Ying Hu Qi Zhang Jiewu Cui Yan Wang Hark Hoe Tan Yucheng Wu Institute of Industry and Equipment Technology Hefei University of Technology Hefei 230009 China School of Materials Science and Engineering Hefei University of Technology Hefei 230009 China Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei 230009 China Department of Electronic Materials Engineering Research School of Physics and Engineering The Australian National University Canberra ACT2601 Australia

We first report that photoelectrochemical （PEC） performance of electrochemically hydrogenated TiO2 nanotube arrays （TNTAs） as high-efficiency photoanodes for solar water splitting could be well tuned by designing and adjusting the phase structure and composition of TNTAs. Among various TNTAs annealed at different temperature ranging from 300 to 700℃, well-crystallized single anatase （A） phase TNTAs-400 photoanode shows the best photoresponse properties and PEC performance due to the favor- able crystallinity, grain size and tubular structures. After electrochemical hydrogenation （EH）. anatase- rutile （A-R） mixed phase EH-TNTAs-600 photoanode exhibits the highest photoactivity and PEC perfor- mance for solar water splitting. Under simulated solar illumination, EH-TNTAs-600 achieves the best photoconversion efficiency of up to 1.52% and maximum H2 generation rate of 40.4 ~mol h i cm-2, our- stripping other EH-TNTAs photoanodes. Systematic studies reveal that the signigicantly enhanced PEC performance for A-R mixed phaes EH-TNTAs-600 photoanode could be attributed to the synergy of A-R mixed phases and intentionally introduced Ti3~ （oxygen vacancies） which enhances the photoactivity over both UV and visible-light regions, and boosts both charge separation and transfer efficiencies. These findings provide new insight and guidelines for the construction of highly efficient TiO2-based devices for the application of solar water splitting.

关键词： TNTAs Electrochemical hydrogenation Phase Photoelectrochemistry Hydrogen generation

Construction of WO_(3)/Ti-doped WO_(3)bi-layer nanopore arrays with superior electrochromic and capacitive performances

在线全文

学校读者我要写书评

暂无评论

Tungsten 2019年第3期1卷 236-244页

作者： Yingdi Shi Shujing liu Yong Zhang Mingjun Sun Kai Tang Jiewu Cui Xia Shu Yan Wang jiaqin liu Yucheng Wu School of Materials Science and Engineering Hefei University of TechnologyHefei 230009China Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei 230009China Institute of Industry and Equipment Technology Hefei University of TechnologyHefei 230009China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

Crystalline WO_(3)/Ti-doped WO_(3)bi-layer nanopore arrays were constructed by the template synthesis of a WO_(3)nanopore layer modified by a magnetron sputtering of an amorphous Ti-doped/WO_(3)*** obtained bi-layer nanopore array shows a remarkable electrochromic performance with large dual-band optical modulation in both visible(VIS)and near infrared(NIR)regions(optical modulation of over 70%in the wavelength range from 600 to 1600 nm)and the fast response speed(coloring for 3.4 s and bleaching for 6.6 s).In addition,the bi-layer WO_(3)/Ti-doped WO_(3)nanopore array also present superior energy-storage properties(areal capacitance of 44.0 mF cm−2 and good rate capability),better than that of titanium-free thin *** special bifunctional characteristics of electrochromism and pseudocapacitance can be ascribed to the large specific surface area provided by the architectural design,rich ion channels in the amorphous layer as well as proper titanium doping,which bestows the bi-layer nanopore array a great potential in clean energy applications.

关键词： Electrochromism Capacitance Tungsten oxide Titanium doping

Binding Se into nitrogen-doped porous carbon nanosheets for high-performance potassium storage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

InfoMat 2021年第4期3卷 421-431页

作者： Huijuan Huang Xiao Luo Yu Yao Xuefeng Zhou Yu Jiang ChunliGuo jiaqin liu Xiaojun Wu Yan Yu Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringCAS Key Laboratory of Materials for Energy ConversionUniversity of Science and Technology of ChinaHefeiChina College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuanChina Institute of Industry&Equipment Technology Key Laboratory of Advanced Functional Materials&Devices of Anhui ProvinceHefei University of TechnologyHefeiChina Dalian National Laboratory for Clean Energy(DNL) Chinese Academy of Sciences(CAS)DalianChina

Selenium cathode has been demonstrated as a promising candidate of cathode material for low-cost and high-energy density potassium ion batteries(PIBs).Nevertheless,their applica tions are prevented by poor electrochemical perfor-mance due to the shuttle effect of high-order polyselenides,the sluggish diffu-sion of bigger K+,and the huge volumetric expansion during *** this work,we design a multifunctional Se host(N-HCNS)by grafting ZIF-8 derived microporous carbon onto the surface of N-doped porous carbon *** obtained N-HCNS carbon matrix integrates conductivity,captivity,and immobility abilities,which inhibits the polyselenides shuttle,improves the Se utilization,and buffers the volume change during *** 3D hollow car-bon skeleton enhances the infiltration of *** an cathode for PIBs,the Se@N-HCNS electrode delivers an unprecedented life-span(260 mAh g1 at 1.0 Ag-1 after 2000 cycles)and exhibits a remarkable rate capacity(339 mAh g at 5.0 Ag-l).Density functional theory(DFT)calculation reveals the effective adsorption of K2Se with pyridine and pyrrole nitrogen dop-ing in carbon *** unique synergetic design of electrode not only gives insight into the reaction mechanism but also highly emphasi zes the potential capabilities of N doped carbon in K-Se batteries.

关键词： nitrogen-doped carbon potassium-selenium batteries(K-Se batteries) selenium cathodes

Treatment of Sjogren's Syndrome with Liver Depression

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Clinical and Nursing Research 2021年第1期5卷 54-56页

作者： jiaqin liu Chunying liu Shaanxi University of Traditional Chinese Medicine China Affiliated Hospital of Shaanxi University of Traditional Chinese Medicine China

liu Chunying is a famous old Chinese medicine doctor for more than 30 *** has rich experience in the understanding and treatment of Sjogren's syndrome(SS).liu Shi systematically discusses the etiology and pathogenesis of SS from the angle of liver *** the treatment,it is emphasized that"Muyu Da Zhi"is the first,with the addition and subtraction of the disease,to provide a new idea for the treatment of Sjogren's syndrome from liver depression,and to attach a test case.

关键词： Sjogren's syndrome Liver depression caused dryness Syndrome differentiation Muyu Da Zhi liu Chunying Famous medical experience

The development of library science in China in an international perspective

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Library Science in China 2019年 28-39页

作者： CHENG Huanwen liu jiaqin ZHAO Danan School of Information Management Sun Yat-Sen UniversityGuangzhou 510006China

This article describes the development of the internationalization of Chinese library science and the Chinization of international library science from an international perspective based on the historical research *** development of Chinese library science in the past one hundred years is mainly embodied in the Chinization of international standards,technologies and *** article suggests that the Chinese library science research should make the world hear its voice,spread Chinese ideas,promote innovations in Chinese library community and help to bolster the development of global librarianship.

关键词： Library science in China International perspective Academic ideology Library discipline

公共图书馆的社会价值与时代使命——《国际图书馆协会联合会——联合国教科文组织公共图书馆宣言(2022)》阐释

在线全文

学校读者我要写书评

暂无评论

图书馆建设 2022年第6期 30-39页

作者：刘佳亲北京大学信息管理系

《公共图书馆宣言》在修订过程中,国际图联一方面广泛征求全球图书馆界的意见,另一方面与联合国教科文组织密切合作,凝聚了全球共识和世界智慧。《公共图书馆宣言(2022)》确立的公共图书馆社会价值为:公共图书馆是教育、文化、包容和信... 详细信息

《公共图书馆宣言》在修订过程中,国际图联一方面广泛征求全球图书馆界的意见,另一方面与联合国教科文组织密切合作,凝聚了全球共识和世界智慧。《公共图书馆宣言(2022)》确立的公共图书馆社会价值为:公共图书馆是教育、文化、包容和信息的有生力量,是可持续发展的重要因素,是每个人通过人们的思想实现和平与精神福祉的重要因素。《公共图书馆宣言(2022)》共确立了11项公共图书馆的使命,与《联合国2030年议程》提出的17项可持续发展目标和联合国教科文组织全民信息计划所关注的6个优先领域密切相关。《公共图书馆宣言(2022)》的修订过程和修订内容给我们带来了两点基本启示:公共图书馆的社会价值与时俱进,且越来越广泛,越来越重要;公共图书馆的时代使命光荣而艰巨。

关键词：公共图书馆宣言国际图联联合国教科文组织