检索结果-南通市图书馆

Recent Progress in the Synthesis and Application of Saddle-shaped Cyclooctatetrathiophenes and Their Derivatives

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2015年第1期33卷 71-78页

作者： Chunmei Zhao Li Xu Yong Wang Chunli Li Hua Wang Key Lab for Special functional materials of Ministry of Education Henan UniversityKaifengHenan 475004China College of Chemistry and Chemical Engineering Henan UniversityKaifengHenan 475004China institute of nanostructured functional materials Huanghe Science and Technology CollegeZhengzhouHenan 450006China

Cyclooctatetrathiophene(COTh)shows a novel saddle-shaped molecular structure,which has been applied in organic synthesis and material *** this paper,the design and synthesis of COThs and their derivatives were *** derivatives of COThs include mainly four *** is isomer with different sequences of the four thiophene rings;the second is oligomer such as dimmer and dendrimer;the third is derivative functionalized by substituent groups at the fourαpositions;the last is the one planarized by sulfur,silicon or sulfone *** applications of COThs and their derivatives in molecular muscles and field effect transistors were also discussed.

关键词： cyclooctatetrathiophene derivatives synthesis application review

Recent advances in graphene oxide catalyzed organic transformations

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

Chinese Chemical Letters 2022年第5期33卷 2354-2362页

作者： Fan Gao Shouren Zhang Qiyan Lv Bing Yu School of Biology College of ChemistryZhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou 450006China

Graphene oxide(GO),as a metal-free and readily available carbocatalyst,has been extensively applied in catalytic organic *** minireview aims to give an overview of the progress on the application of native GO as a cat... 详细信息

关键词： Graphene oxide Metal-free Carbocatalyst Eco-friendly

Synthesis and Structure of an Organo-templated Oxouranium Phosphite

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2011年第4期27卷 536-539页

作者： YU Jian-guo ZHAO Yong-nan Tianjin Key Laboratory of Fiber Modification and functional Fiber College of Environment and Chemical Engineering institute of nanostructured materials School of Materials Science and Engineering Tianjin Polytechnic University Tianjin 300160 P. R. China

A novel layered oxouranium phosphite open-structure [（C10H24N2）（H2O）][（UO2）2（HPO3）3]（denoted as TJPU-8,TJPU=Tianjin Polytechnic University） was hydrothermally synthesized with isophorondiamine（IPDA） as the *** crystal structure refinement disclosed that TJPU-8 crystallized in the monoclinic space group P21c with cell parameters a=1.8346（9） nm,b=0.6734（1） nm,c=2.0639（0） nm,β=114.61（5）°,V=2.3182（8） nm3,Z=***-8 was constructed by UO7 monomer,U2O12 dimer and HPO3 *** monomeric UO7 or dimeric U2O12 was connected by HPO3 groups to form two types of 4-ring *** undulating sheet was then generated by connecting these two types of chains via HPO3 *** layer structure formed by stacking the sheets along the a direction via the strong H-bonds of organoamine cations and water molecules intercalated in the interlayer spaces with the framework oxygen *** a mixture of cis-and trans-IPDA was used,only cis-IPDA served as the template.A typical green light emission of TJPU-8 is observed when excited by 266 nm laser.

关键词： Hydrothermal synthesis Open-framework compound Single crystal structure Oxouranium phosphite

Size Dependent Physical Properties of nanostructured α-Fe_2O_3 Thin Films Grown by Successive Ionic Layer Adsorption and Reaction Method for Antibacterial Application

在线全文

学校读者我要写书评

暂无评论

Journal of materials Science & Technology 2015年第1期31卷 1-9页

作者： A.U.Ubale M.R.Belkhedkar nanostructured Thin Film materials Laboratory Department of PhysicsGovt.Vidarbha Institute of Science and Humanities Department of Physics Shri Shivaji College

Thin films of nanostructured α-FeOwith thickness of 1 56,203 and 251 nm were deposited by successive ionic layer adsorption and reaction(SILAR) method onto glass substrates using FeCl-6HO and NaOH as cationic and anionic *** X-ray diffraction studies revealed that,α-FeOthin films are nanocrystalline in nature with rhombohedral *** morphological properties were investigated by field emission scanning electron and atomic force *** optical studies showed that α-FeOexhibits direct as well as indirect optical band gap *** electrical resistivity of α-FeOat 305 K decreases from 11.76×102 to9.46 × 10~2 Ω cm as film thickness increases from 156 to 251 *** thermo-emf measurements confirmed that α-FeOexhibits n-type *** nanocrystalline α-FeOexhibits antibacterial character against Staphylococcus aureus and its efficiency increases from 37.50%to 87.50%depending on crystallite size.

关键词： Thin films Nanostructures AFM(atomic force microsc

Structure of nano-copper and nano-conductive fibers

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第18期42卷 1535-1538页

作者： Zhang, ZK Cui, ZL Chen, KZ Wang, YN Ning, YP institute of nanostructured materials Qingdao Institute of Chemical Technology Qingdao China Department of Rubber of Qingdao institute of Chemical Technology Qingdao China

VARIOUS small inorganic solid grain catalysts, alloys and films consisting of various nano-size particles were prepared by chemical methods. The study of catalytic properties of nanostructured materials integrated mat... 详细信息

关键词： polymerization nano-copper, nano-conductive fibers.

Regulating electronic structure of two-dimensional porous Ni/Ni_(3)N nanosheets architecture by Co atomic incorporation boosts alkaline water splitting

在线全文

学校读者我要写书评

暂无评论

InfoMat 2022年第6期4卷 141-152页

作者： Kaixi Wang Yingying Guo Zhonghui Chen Donghai Wu Shouren Zhang Baocheng Yang Jianan Zhang Henan Provincial Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhouChina Key Lab for Special functional materials of Ministry of Education National&Local Joint Engineering Research Center for High-efficiency Display and Lighting TechnologySchool of Materials Science and EngineeringHenan UniversityKaifengChina College of materials Science and Engineering Zhengzhou UniversityZhengzhouChina

Interfacial engineering is a powerful method to improve the bifunctional electrocatalytic performance of pure phase *** it is expected to further optimize the electronic configuration of heterojunctions to boost the reaction kinetics in hydrogen/oxygen evolution reaction(HER/OER),but remains a ***,a novel in situ hybrid heterojunction strategy is developed to construct 2D porous Co-doped Ni/Ni_(3)N heterostructure nanosheets(Co-Ni/Ni_(3)N)by pyrolysis of partially cobalt substituted nickel-zeolitic imidazolate framework(CoNi-ZIF)nanosheets under NH3 atmosphere.A combined experimental and theoretical studies manifest that the hybrid heterostructures can display regulative electronic states and downshift d-band center from the Fermi level,as well as optimize the adsorption energy of reaction intermediates,thus reducing the thermodynamic energy barriers and accelerating the catalytic ***,benefitting from the optimized electronic configuration,hierarchical hollow nanosheets architecture,and abundant doped heterojunctions,the hybrid Co-Ni/Ni_(3)N heterostructure catalyst exhibits efficient catalytic activity for both HER(60 mV)and OER(322 mV)at 10 mA cm^(-2)in alkaline media,which is 105 and 47 mV lower than that of pure Ni_(3)N,*** electrochemically active surface area of Co-Ni/Ni_(3)N is two times higher than that of ***,the coupled practical water electrolyzer requires a low voltage of 1.575 V to reach 10 mA cm^(-2),and it can be driven by a 1.5 V *** work highlights the interface engineering guidance for the rational establishment of hybrid interfaces by electronic modulation of interfacial effect for alkaline water splitting.

关键词： 2D porous nanosheet hybrid heterojunction interfacial engineering nickel nitride overall water splitting

Stabilizing nickel sulfide nanoparticles with an ultrathin carbon layer for improved cycling performance in sodium ion batteries

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

Nano Research 2016年第10期9卷 3162-3170页

作者： Feipeng Zhao Qiufang Gong Brian Traynor Duo Zhang Jiaojiao Li Hualin Ye Fengjiao Chen Na Han Yeyun Wang Xuhui Sun Yanguang Li institute of functional Nano & Soft materials (FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Soochow University Suzhou 215123 China Departments of Physics and Chemistry Trinity College University of Dublin Dublin 2 Ireland

nanostructured metal sulfides are potential electrode materials for sodium-ion batteries; however, they typically suffer from very poor cycling stability due to large volume changes and dissolution of discharge products. Herein we propose a rational material design strategy for sulfide-based materials to address these problems. Taking nickel sulfide （NiSx） as an example, we demonstrated that its electrochemical performance can be dramatically improved by confining the NiSx nanoparticles in a percolating conductive carbon nanotube network, and stabilizing them with an ultrathin carbon coating layer. The carbon layer serves as a physical barrier to alleviate the effects of both the volume change and dissolution of active materials. The hybrid material exhibited a large reversible specific capacity of 〉500 mAh/g and excellent cycling stability over 200 cycles. Given the traditionally problematic nature of NiSx as a battery anode material, we believe that the observed high performance reported here reflects the effectiveness of our material design strategy.

关键词： metal sulfides sodium-ion batteries composite carbon coating layer cycling stability

Triple-phase interfaces of graphene-like carbon clusters on antimony trisulfide nanowires enable high-loading and long-lasting liquid Li_(2)S_(6)-based lithium-sulfur batteries

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

Journal of Energy Chemistry 2021年第8期30卷 599-607,I0013页

作者： Chenyang Zha Donghai Wu Xiuquan Gu Houyang Chen Key Laboratory of Flexible Electronics(KLOFE) Institute of Advanced Materials(IAM)Nanjing Tech UniversityNanjing 211816China Henan Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe Science and Technology CollegeZhengzhou 450006China School of materials and Physics China University of Mining and TechnologyXuzhou 221116JiangsuChina Department of Chemical and Biological Engineering State University of New York at Buffalo14260-4200 BuffaloUSA

High performance of lithium-sulfur batteries have been dragged down by their shuttling behavior which is complicated multiphase transition-based 16-electron redox reactions of the S8/Li2 *** this article,the triple-phase interfaces of graphene-like carbon clusters on antimony trisulfide(C-Sb_(2)S_(3))nanowires are tailored to design a multifunctional polysulfide host which can inhibit migration of polysulfides and accelerate conversion kinetics of redox electrochemical *** from the triple-interface design of polysulfides/Sb_(2)S_(3)/carbon clusters,the C-Sb_(2)S_(3) electrode not only anchors polysulfide migration by the synergistic effect of Sb,S,and C atoms as interfacial active sites,but also the graphene-like carbon clusters shorten the diffusion paths to further favor redox electron/ion transport through the liquid(electrolyte/polysulfide)and solid(Li2 S/S8,carbon clusters,and Sb_(2)S_(3))-based ***,these Li_(2)S_(6)-based C-Sb_(2)S_(3) cells possess high sulfur loading,excellent cycling stability,impressive specific capacity,and great rate *** work of interfacial engineering reveals insight for powering reaction kinetics in the complicated multistep catalysis reaction with multiphase evolution-based chargetransfer/non-transfer processes.

关键词： Triple-phase interfaces Graphene-like carbon Antimony trisulfide High preformance Lithium-sulfur batteries

Nanometer metal particle catalyst with rare earth thin shell and stored hydrogen

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1996年第19期41卷 1670-1672页

作者：张志琨崔作林温树林 institute of nanostructured materials Qingdao Institute of Chemical Technology 266042 Qingdao China Shanghai institute of Ceramics Chinese Academy of SciencesShanghai 200050China

Nanocrystalline transition metal particles were prepared by the H2+Ar arc plasma method. A lot of hydrogen was stored in nano transition metal particles. The stored hydrogen in the interstitial positions will be suddenly released in large amount at 400℃ or so. This kind of bulk hydrogen made nano-transition metal particles possess good catalysis properties. The structure of polyhydro particles was analysed using HRTEM and the energy spectrum method. It was found that a great quantity of defects exist on the surface of particles as shown in fig. 1. The surface area and reaction activity were increased. Also

关键词：树林