检索结果-南通市图书馆

Microstructure evolution of single crystal copper wires in cold drawing

science china(technological sciences) 2007年第6期50卷 736-748页

作者： CHEN Jian1,2, YAN Wen1,2, WANG XueYan2 & FAN xinHui2 1 Department of Applied Physics, Northwestern Polytechnical university, xi’an 710072, china 2 School of material science and chemical engineering, xi’an technological university, xi’an 710032. china 1. Department of Applied Physics Northwestern Polytechnical University Xi’an 710072 China 2. School of material science and chemical engineering Xi’an Technological University Xi’an 710032 China

The deformation microstructure evolution of single crystal copper wires produced by OCC method has been studied with the help of TEM, EBSD; OM. The results show that there are a small number of dendrites; twins in the undeformed single crystal copper wires. However, it is difficult to observe these dendrites in deformed single crystal copper wires. The structure evolution of deformed single crystal copper wires during drawing process can be divided into three stages. When the true strain is lower than 0.94, macroscopic subdivision of grains is not evident,; the microscopic evolution of deformed structure is that the cells are formed; elongated in drawn direction. When the true strain is between 0.94; 1.96, macroscopic subdivision of grains takes place,; the number of microbands located on {111}; cell blocks is much more than that with the true strain lower than 0.94. When the true strain is larger than 1.96, the macroscopic subdivision of grains becomes more evident than that with the true strain between 0.94; 1.96,; S-bands structure; lamellar boundaries will be formed. From EBSD analysis, it is found that part of 100 texture resulting from solidifying is transformed into 111; 112 due to shear deformation, but 100 texture component is still kept in majority. When the true strain is 0.94, the misorientation angle of dislocation boundaries resulting from deformation is lower than 14°. However, when the true strain arrives at 1.96, the misorientation angle of some boundaries will be greater than 50°,; the peak of misorientation angle distribution produced by texture evolution is located in the range between 25°; 30°.

关键词： single crystal copper wires, deformation structure, electron backscattering diffraction, transmission electron microscopy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Predicted a honeycomb metallic BiC and a direct semiconducting Bi_(2)C monolayer as excellent CO_(2)adsorbents

引用

Chinese chemical Letters 2022年第5期33卷 2595-2599页

作者： Menghui xi Chaozheng He Houyong Yang xi Fu Ling Fu xiaoli Cheng Jiyuan Guo Institute of Environmental and Energy Catalysis Shaanxi Key Laboratory of Optoelectronic Functional Materials and DevicesSchool of Materials Scienceand Chemical EngineeringXi’an Technological UniversityXi’an 710021China College of science Hunan Universtiy of Science and EngineeringYongzhou 425199China College of Resources and Environmental engineering Tianshui Normal UniversityTianshui 741001China Department of Physics Jishou UniversityJishou 416000China School of science Jiangsu University of Science and TechnologyZhenjiang 212003China

We predicted two stable two-dimensional materials of carbon and bismuth elements,namely BiC and Bi_(2)C *** stabilities of two monolayers were examined by cohesive energy,Born criteria,first-principle MD simulations and phonon spectra,*** including the spin-orbit coupling effects,the BiC monolayer is a metal and the Bi_(2)C monolayer possesses a narrow direct(indirect)band gap of 0.403(0.126)eV under the HSE06(GGA-PBE)*** the adsorption of CO_(2)molecules,the BiC and Bi_(2)C monolayers have three stable adsorption sites C2,T3 and T4 with the adsorption energies as-0.57,-0.51 and-0.81 eV,and the activation ability on the adsorption as T4>T3>*** consequences make the BiC and Bi_(2)C monolayers to be promising adsorbents to capture CO_(2)gas,the Bi_(2)C monolayer to be well photovoltaics and optoelectronics material,and the BiC monolayer to be ideal battery and electronics materials,respectively.

关键词： First-principles calculation Global optimization method Monolayer Bismuth carbide compounds CO_(2)adsorbents Semiconducting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Prediction of semiconducting SiP_(2)monolayer with negative Possion’s ratio,ultrahigh carrier mobility and CO_(2)capture ability

引用

Chinese chemical Letters 2021年第3期32卷 1089-1094页

作者： xi Fu Houyong Yang Ling Fu Chaozheng He Jinrong Huo Jiyuan Guo Liming Li College of science Hunan Universtiy of Science and EngineeringYongzhou 425199China Institute of Environmental and Energy Catalysis School of Materials Science and Chemical EngineeringXi’an Technological UniversityXi’an 710021China Shaanxi Key Laboratory of Optoelectronic Functional materials and Devices School of Materials Science and Chemical EngineeringXi'an Technological UniversityXi'an 710021China College of Resources and Environmental engineering Tianshui Normal UniversityTianshui 741001China School of science Jiangsu University of Science and TechnologyZhenjiang 212003China

Using particle swarm optimization(PSO)methodology for crystal structure prediction,we predicted a novel two-dimensional(2 D)monolayer of silicide diphosphorus compound:SiP_(2),which exhibits good stability as examined via cohesive energy,mechanical criteria,molecular dynamics simulation and all positive phonon spectrum,*** SiP_(2)monolayer is an indirect semiconductor with the band gap as 1.8484 eV(PBE)or 2.681 eV(HSE06),which makes it more advantageous for high-frequencyresponse optoelectronic ***,the monolayer is a relatively hard auxetic material with negative Possion’s ratios,and also possesses a ultrahigh carrier mobility(1.069×10^(5)cm^(2)V^(-1)s^(-1))which is approximately four times the maximum value in phosphorene and comparable to the value of graphene and CP ***,the effects of strains on band structures and optical properties of SiP_(2)monolayer have been studied,as well as CO_(2)molecules can be strongly chemically adsorbed on the SiP_(2)monolayer.A semiconductor-to-metal transition for-9.5%strain ratio case and a huge optical absorption capacity on the order of 10^(6)cm^(-1)in visible region *** theoretical findings endow SiP_(2)Monolayer to be a novel 2 D material holding great promises for applications in highperformance electronics,optoelectronics,mechanics and CO_(2)capturing material.

关键词： First-principles calculation Global optimization method Semiconducting monolayer Silicide diphosphorus compound Auxetic material CO_(2)capturing material

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Bifunctional Brønsted Acidic Deep Eutectic Solvent to Dissolve and Catalyze the Depolymerization of Alkali Lignin

引用

Journal of Renewable materials 2021年第2期9卷 219-235页

作者： Lifen Li Zhigang Wu Xuedong xi Baoyu Liu Yan Cao Hailong Xu Yingcheng Hu College of Forestry Guizhou UniversityGuiyang550025China ENSTIB-LERMAB University of LorraineEpinal88051France Special and Key Laboratory for Development and Utilization of Guizhou Superior Bio-Based materials Guizhou Minzu UniversityGuiyang550025China Key Laboratory of Bio-Based material science and Technology of Ministry of Education of china College of Material Science and EngineeringNortheast Forestry UniversityHarbin150040China

Lignin is an abundant renewable macromolecular material in nature,and degradation of lignin to improve its hydroxyl content is the key to its efficient *** lignin(AL)was treated with Brønsted acidic deep eutectic solvent(DES)based on choline chloride and p-toluenesulfonic acid at mild reaction temperature,the structure of the lignin before and after degradation,as well as the composition of small molecules of lignin were analyzed in order to investigate the chemical structure changes of lignin with DES treatment,and the degradation mechanism of lignin in this acidic DES was elucidated in this *** and NMR analyses demonstrated the selective cleavage of the lignin ether linkages in the degradation process,which was in line with the increased content of phenolic hydroxyl *** revealed that the O/C atomic ratio of the regenerated lignin was lower than that of the AL sample,revealing that the lignin underwent decarbonylation during the DES *** lignin with low molecular weight and narrow polydispersity index was obtained,and the average molecular weight(Mw)decreased from 17680 g/mol to 2792 g/mol(130°C,3 h)according to GPC *** lignin-degraded products were mainly G-type phenolics and ketones,and small number of aldehydes were also generated,the possible degradation pathway of lignin in this acidic DES was proposed.

关键词： Alkali lignin depolymerization Brønsted acidic deep eutectic solvent structural analysis

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synthesis,Crystal Structure and Properties of A Triphenyltin Schiff Complex with Salicylidene-2-aminophenol

引用

Chinese Journal of Structural Chemistry 2018年第2期37卷 270-276页

作者： ZHANG Fu-xing WU Qian KUANG Dai-Zhi YU Jiang-xi JIANG Wu-Jiu ZHU xiao-Ming Department of Chemistry and material science Hengyang Normal UniversityKey Laboratory of Functional Metal-organic Compounds of Hunan Province Key Laboratory of Functional Organometallic materials of Hengyang Normal university College of Hunan ProvinceHengyangHunan 421008China

The triphenyltin complex with salicylidene-2-aminophenol （C31H24NO2Sn, 1） has been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and X-ray single-crystal diffraction. The complex crystallizes in monoclinic system, P21/c space group with a = 1.09515（8）, b = 1.17739（8）, c = 2.29075（14） nm, β = 117.070（4）°, V = 2.6302（3） nm3, Z = 4, Dc = 1.417 g/cm3, ？ = 0.999 mm–1, F（000） = 1123, R = 0.0472 and wR = 0.1169. X-ray single-crystal diffraction showed that 1 demonstrates a one-dimensional chain structure. The quantum chemical calculation of 1 has been investigated. Complex 1 emits fluo- rescence at 558 nm and exhibits certain inhibitory activity against NCI-H460, A549 and MCF-7.

关键词： triphenyltin complex with salicylidene-2-aminophenol organotin synthesis,crystal structure vitro anticancer activity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Lignin-based materials for electrochemical energy storage devices

引用

Nano materials science 2023年第2期5卷 141-160页

作者： Huan Wang Fangbao Fu Ming Huang Yunhui Feng Dongxue Han Yuebin xi Wenlong xiong Dongjie Yang Li Niu Guangzhou Key Laboratory of Sensing materials&Devices School of Chemistry and Chemical EngineeringCollege of Physical EducationGuangzhou UniversityGuangzhouChina School of Chemistry and chemical engineering Guangdong Provincial Engineering Research Center for Green Fine ChemicalsSouth China University of TechnologyGuangzhou510640China School of chemical and Biomedical engineering Nanyang Technological University70 Nanyang Drive637457Singapore Key Laboratory of Pulp and Paper science&Technology of Ministry of Education State Key Laboratory of Biobased Material and Green PapermakingQilu University of Technology(Shandong Academy of Sciences)Jinan250353China School of chemical engineering Zhengzhou UniversityZhengzhou450001China

Lignin is the most abundant aromatic polymer in nature,which is rich in a large number of benzene ring structures and active functional *** molecular structure of lignin has unique designability and controllability,and is a class of functional materials with great application prospects in energy storage and ***,this review firstly focuses on the concept,classification,and physicochemical property of ***,the application research of lignin in the field of electrochemical storage materials and devices are summarized,such as lignin-carbon materials and lignin-carbon composites in supercapacitors and secondary ***,this review points out the bottlenecks that need to be solved urgently and the prospects for future research priorities.

关键词： Lignin Electrochemical storage Lignin-based carbon Supercapacitors Secondary batteries

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Animal- and Human-Inspired Nanostructures as Supercapacitor Electrode materials: A Review

引用

Nano-Micro Letters 2022年第12期14卷 151-175页

作者： Iftikhar Hussain Charmaine Lamiel Sumanta Sahoo Muhammad Sufyan Javed Muhammad Ahmad xi Chen Shuai Gu Ning Qin Mohammed AAssiri Kaili Zhang Department of Mechanical engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong KongPeople’s Republic of China Department of chemical engineering University of WyomingLaramieWY 82071USA Department of Chemistry Madanapalle Institute of Technology and ScienceMadanapalleAndhra Pradesh 517325India School of Physical science and Technology Lanzhou UniversityLanzhou 730000People’s Republic of China Department of Chemistry Faculty of ScienceKing Khalid UniversityAbha 61413Saudi Arabia

Human civilization has been relentlessly inspired by the nurturing lessons;nature is teaching *** birds to airplanes and bullet trains,nature gave us a lot of perspective in aiding the progress and development of countless industries,inventions,transportation,and many *** only that nature inspired us in such technological advances but also,nature stimulated the advancement of micro-and ***-inspired nanoarchitectures have been consid-ered a favorable structure in electrode materials for a wide range of *** offers various positive attributes,especially in energy storage applications,such as the formation of hierarchical two-dimen-sional and three-dimensional interconnected networked structures that benefit the electrodes in terms of high surface area,high porosity and rich surface textural features,and eventually,delivering high capacity and outstanding overall material *** this review,we compre-hensively assessed and compiled the recent advances in various nature-inspired based on animal-and human-inspired nanostructures used for *** comprehensive review will help researchers to accommodate nature-inspired nanostructures in industrializing energy storage and many other applications.

关键词： Nature-inspired nanostructure Supercapacitors Energy storage Animal-inspired and human-inspired nanostructures

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Spider web-like carbonized bacterial cellulose/MoSe_(2) nanocomposite with enhanced microwave attenuation performance and tunable absorption bands

引用

Nano Research 2021年第3期14卷 738-746页

作者： Zhengjian Xu Man He Yuming Zhou Shuangxi Nie Yongjuan Wang Yao Huo Yifan Kang Ruili Wang Ran Xu Hao Peng xi Chen Jiangsu Optoelectronic Functional materials and engineering Laboratory School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing211189China Guangxi Key Laboratory of Clean Pulp&Papermaking and Pollution Control College of Light Industry and Food EngineeringGuangxi UniversityNanning530004China

It is essential to manufacture microwave absorbers with strong absorption as well as tunable absorption bands at a low filler ***,it remains challenging for pure biomass material to reach this goal without loading other ***_(2),as a transition metal chalcogenide with semiconductor properties,has emerged as a potential microwave absorber ***,bacterial cellulose(BC)-derived carbon nanofibers/MoSe_(2) nanocomposite was fabricated and phosphoric acid was used to dope phosphorus in BC,in which MoSe_(2) microspheres were dropped on the BC network like a dew-covered spider *** unique network structure enhances conductive loss and multiple reflections of the incident *** collocation of BC and MoSe_(2) is helpful to impedance match and introduces interfacial/dipolar polarization loss;moreover,the P-doping of BC helps to tune the absorption ***,the optimal reflection loss of undoped one reaches−53.33 dB with only 20 wt.%filler content,whose main absorption peaks focus on ***,after the P-doping of BC,the main absorption peaks move to Ku-band and the optimal reflection loss gets stronger(−66.84 dB)with the same filler *** absorption and tunable absorption bands can be realized,and thus wide frequency range is *** work is expected to enlighten future exploration of biomass carbon materials on high-performance microwave absorption materials.

关键词： bacterial cellulose MoSe_(2) network structure P-doped carbon tunable absorption band

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Review on lithium metal anodes towards high energy density batteries

引用

Green Energy & Environment 2023年第6期8卷 1509-1530页

作者： Jun-Fan Ding Yu-Tong Zhang Rui Xu Rui Zhang Ye xiao Shuo Zhang Chen-xi Bi Cheng Tang Rong xiang Ho Seok Park Qiang Zhang Jia-Qi Huang School of materials science and engineering Beijing Institute of TechnologyBeijing100081China Advanced Research Institute of Multidisciplinary science Beijing Institute of TechnologyBeijing100081China School of chemical engineering and Advanced materials The University of AdelaideAdelaideSA5005 Australia Department of Mechanical engineering The University of TokyoTokyo113-8656Japan State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou310027China School of chemical engineering Sungkyunkwan UniversitySuwon440-746Republic of Korea Department of chemical engineering Tsinghua UniversityBeijing100084China

Lithium metal anode(LMA) is a promising candidate for achieving next-generation high-energy-density batteries due to its ultrahigh theoretical capacity and most negative electrochemical potential. However, the practical application of lithium metal battery(LMB) is largely retarded by the instable interfaces, uncontrolled dendrites, and rapid capacity deterioration. Herein, we present a comprehensive overview towards the working principles and inherent challenges of LMAs. Firstly, we diligently summarize the intrinsic mechanism of Li stripping and plating process. The recent advances in atomic and mesoscale simulations which are crucial in guiding mechanism study and material design are also summarized. Furthermore, the advanced engineering strategies which have been proved effective in protecting LMAs are systematically reviewed, including electrolyte optimization, artificial interface, composite/alloy anodes and so on. Finally, we highlight the current limitations and promising research directions of LMAs. This review sheds new lights on deeply understanding the intrinsic mechanism of LMAs, and calls for more endeavors to realize practical Li metal batteries.

关键词： Lithium metal anode Solid electrolyte interphase Advanced electrolytes Artificial interface Composite anodes Theoretical simulations

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

苯并噻唑基共价有机框架材料的制备及其对水中铜离子的检测和吸附

引用

化学试剂 2024年第10期46卷 14-22页

作者：周壮壮麻丽媛左佳灵丁镠李笑马雪浩金洗郎西安邮电大学计算机学院陕西西安710021 西安工业大学材料与化工学院陕西西安710021 陕西理工大学材料科学与工程学院陕西汉中723001

铜(Cu)元素对人体起着至关重要的作用,水中铜离子的检测是环境监测的重要内容。以4,4′,4″-(1,3,5-三嗪-2,4,6-三基)三苯甲醛和2,5-二氨基-1,4-苯二硫酚二盐酸盐为原料通过两步法合成了一种双功能共价有机框架材料(COF-TFPT-DBD)。COF-... 详细信息

铜(Cu)元素对人体起着至关重要的作用,水中铜离子的检测是环境监测的重要内容。以4,4′,4″-(1,3,5-三嗪-2,4,6-三基)三苯甲醛和2,5-二氨基-1,4-苯二硫酚二盐酸盐为原料通过两步法合成了一种双功能共价有机框架材料(COF-TFPT-DBD)。COF-TFPT-DBD具有优良的物理化学稳定性、较大的比表面积(382.91 m^(2)/g)以及优异的荧光性能。COF-TFPT-DBD对Cu^(2+)具有良好的选择性和灵敏度,在10~40μmol/L浓度范围内呈现良好的线性关系(R^(2)=0.988),较低的检测限(250 nmol/L)。此外,在室温条件下对Cu^(2+)的最大吸附量达到152 mg/g(pH 7),且可以循环使用3次以上。X射线光电子能谱和傅里叶红外光谱证实了COF-TFPT-DBD中功能单元与Cu^(2+)之间的相互作用。这些结果表明,该共价有机框架材料在水中铜离子的检测和高效富集方面具有潜在的应用前景。

关键词：共价有机框架苯并噻唑铜离子识别吸附循环

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：