检索结果-南通市图书馆

An efficient CuZr-based metallic glasses electrode material for electrocatalytic degradation of azo dyes

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 Environmental Sciences 2024年第2期136卷 537-546页

作者： Zhiwang Deng Bowen Zhao Songtao li Zhengkun li Shiming Zhang Kewei Zhang Zhengwang Zhu Taiyuan University of Science and Technology School of materials science and engineeringTaiyuan 030024China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Chinese Academy of Sciences Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Qingdao Yunlu Advanced Materials Technology Co. Ltd.Qingdao 266232China

Metallic glasses have received a lot of attention on wastewater treatment due to their unique atomic structure,and the use of metallic glasses as electrodes has produced unexpected electrocatalytic degradation effects for many pollutants through combining with electrochemical ***,it still is a formidable challenge to find a metallic glass electrode material with both efficient and clean for the catalytic degradation of *** this work,the Cu_(55)Zr_(45)metallic glassy ribbons are used as an electrode to degrade azo dyes and show the excellent degradation effect,which can reach 95.6%within 40 *** the degradation process,almost no additives are produced and Cu_(55)Zr_(45)metallic glassy ribbons have excellent effects under different pH ***,it exhibits good stability for degradation efficiency during the 8 cycle degradation tests of the amorphous alloy *** the copper nanoparticles are exposed on the surface of the ribbons,the oxidized copper obtained synergistically produce activated radicals is the primary degradation mechanism,where the auxiliary degradation mechanisms include electron transfer and the promotion of active *** research develops a new type of electrode material for wastewater treatment,and the economy and high efficiency of Cu55Zr45metallic glass endow it the expandable functional applications.

关键词： Metallic glasses Azo dyes Electrocatalytic Degradation Oxidized copper

FINE STRUCTURES OF BOTH INTERFACES AND INTERFACIAL REACTION PRODUCTS

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 1993年第1期6卷 1-20页

作者： li Douxing PING Dehai NING Xiaoguang YE Hengqiang Laboratory of atomic Imaging of Solids,institute of Metal Research,Academia Sinica,Shenyang.china Professor,institute of Metal Research,Academia Sinica,Shenyang 110015,china Inst of Metal Research Acad Sinica Shenyang China

The characteristic of interface depending on the atomic structure exerts an inportant,and sometime controlling,influence on performance of the interacial materials. The present paper reviews the main studies on fine structure of both the materials inter- faces and interfacial reaction products in semiconductor uperlattice,metal multilayer ceram- ics and composite materials by mean of selected area electron doffraction patterns and high resolution electron microscopy. The following features of interfaces are reviewed:the orientation relationships;the char- acteristic of steps,facets and ronghness of interfaces;atomic bonding across the interface;the degree of coherency,the structure of misfit dislocations and elastic relaxations at the inter- faces:the presence of defects at the onterfaces:the structure of the interfacial reaction prod- ucts as well as the reaction kinetics and reaetion mechanism.

关键词： fine structure of the interfaces interfacial solid state reaction orientation relationship high resolution electron microscopy

BRIF and CARIF progress

在线全文

学校读者我要写书评

暂无评论

Science china(Physics,Mechanics & Astronomy) 2011年第S1期54卷 14-17页

作者： liU WeiPing, li ZhiHong, BAI XiXiang, WANG YouBao, GUO Bing, PENG ChaoHua, YANG Yi, SU Jun, CUI BaoQun, ZHOU ShuHua, ZHU ShengYun, XIA HaiHong, GUAN Xialing, ZENG Sheng, ZHANG HuanQiao, CHEN YongShou, TANG HongQing, HUANG li & FENG BeiYuan china institute of atomic energy, P. O. Box 2.5(1), beijing 102.13, china 1. china institute of {2. energy P. O. Box 275(1) Beijing 102413 China

china institute of {2. energy (CIAE) is currently constructing beijing rare ion beam facility (BRIF) and is proposing china advanced rare ion beam facility (CARIF). This paper is aiming at introducing the progress of BRIF project and the con ceptual design CARIF. The ISOL type facility BRIF under construction is composed of a 100 MeV 300 ?A proton cyclotron, an ISOL with mass resolution of 2.000, and a super-conducting liNAC of 2.MeV/q, and will be commissioned in 2.13. CARIF facility proposed is planned to use both ISOL and PF techniques. It is based on a china advanced research reactor CARR that was critical, with ISOL separation of fission fragment, post acceleration to 150 MeV/u, and fragmentation of neu tron-rich fission fragment beam like 132.n. Such unique combination will allow CARIF to deliver beam intensity better than the best world facilities by more than one order of magnitude.

关键词： rare ion beam ISOL PF

Neutron　Diffraction　Study　on　Structure　of　α－liIO_3　Single　Crystal　under　DC　Voltage

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 1995年第6期 11-14页

作者： Cheng Yu-Fen Yang Zhen Cheng Zhi-Xu Guo li-Ping(china {2. of atomic energy,beijing 102.13)E.Legrand(SCK/CEN Boeretang 2.0 B-2.00 Mol,Belgium)

A detailed investigation of anisotropy of neutron diffraction intensity enhancement observed in α-liIO-3 single crystal under a DC field was carried out on a Four-Circle Neutron Diffractometer installed at the BR2./sub> reactor in Belgium and CIAE *** was found that the intensity increase must be ascribed to small displacements of oxygen and iodine atoms rather than the explanation which is only based on changes in the defect of the crystal structure,since the movement of lithium atom to interstitial sites or holes in the crystal may cause displacement of the other atoms.

关键词： neutron diffraction single crystal structure α-liIO3

Quantitative amendment of high-field ^(13)C NMR spectra of coals

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 1997年第10期42卷 807-809页

作者： YANG Baolian, li liyun and YE ChaohuiLaboratory of Magnetic Resonance and atomic and Molecular Physics, Wuhan institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, china Laboratory of Magnetic Resonance and atomic and Molecular Physics Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences Wuhan China

HIGH-RESOLUTION solid state 13C NMR spectroscopy has been a useful tool for the study of *** the use of cross polarization（CP）,magic angle spinning（MAS）and protonhigh-power decoupling（HPD）techniques,high-resolution solid state 13C NMR spectra ofcoals can be obtained and the coal aromaticity（fa）can be measured *** aromaticityis defined as the ratio of aromatic carbon atoms to the total carbon atoms in *** pa-

关键词： 13C NMR coal structure quantitative amendment.

atomic interface regulation of rare-marth metal single atom catalysts for energy conversion

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第5期17卷 3493-3515页

作者： Ziheng Zhan Zhiyi Sun Zihao Wei Yaqiong li Wenxing Chen Shenghua li Siping Pang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China

Efficient photocatalysis and electrocatalysis in energy conversion have been important strategies to alleviate energy crises and environmental *** recent years,with the rapid development of emerging catalysts,significant progress has been made in photocatalysis for converting solar energy into chemical energy and electrocatalysis for converting electrical energy into chemical ***,their selectivity and efficiency of the products are *** earth(RE)can achieve atomic level fine regulation of catalysts and play an crucial role in optimizing catalyst performance by their unique electronic and orbital ***,there is a lack of systematic review on the atomic interface regulation mechanism of RE and their role in energy conversion *** atom catalysts(SACs)provide clear active sites and 100%atomic utilization,which is conducive to exploring the regulatory mechanisms of ***,this review mainly takes atomic level doped RE as an example to review and discuss the atomic interface regulation role of RE elements in energy ***,a brief introduction was given to the synthesis strategies that can effectively exert the atomic interface regulation effect of RE,with a focus on the atomic interface regulation mechanism of ***,the regulatory mechanisms of RE atoms have been systematically summarized in various energy conversion ***,the challenges faced by RE in energy conversion,as well as future research directions and prospects,were pointed out.

关键词： rare earth elements interface regulation effect single-atom catalyst energy conversion

Excited States in Neutron-Deficient ^(197)Bi

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 journal of nuclear physics 1995年第4期17卷 328-335页

作者： Zhou Xiao-hong Sun Xian-fu Guo Yin-xiang Lei Xiang-guo Chen Xin-feng liu Zhong Jin Han-juan and Luo Yi-xiao, institute of Modern Physics, the Chinese Academy of Sciences, Lanzhou 73000Wen Shu-xian Yuan Guan-jun li Guang-sheng Yang Chong-xiang, china institute of atomic energy, beijing 102.13 中科院近代物理所甘肃兰州中国原子能科学院北京

The high-spin states in 197Bi are studied with the 197Re(16O, 6n) reaction, theenergies of 16O being between 85 and 105 MeV. In-beam measurements of γ-ray excitation func-tions, γ-γ-t coincidences and γ-ray angular distributions are performed with six BGO （AC）HPGe detectors and one intrinsic Ge planar detector. Eleven new transitions and three new iso-mers at 2.89, 2.57 and 1968+△keV with T1/2./sub>=19, 34±4, 9, 53, 4±2.. 5 and 18. 04±3. 1 ns,respectively, are observed, and a level scheme established. In addition, a half-life of 36. 7±7.0 ns was determined for the first time for the previously established 2.65 keV isomer.

关键词： Isomer Level scheme γ-γ-l coincidence

Theoretical study of ZnO adsorption and bonding on Al_2._3(0001) surface

在线全文

学校读者我要写书评

暂无评论

Science china(Physics,Mechanics & Astronomy) 2004年第6期47卷 664-675页

作者： li Yanrong1,YANG Chun1,2.XUE Weidong1,li Jinshan3 & liU Yonghua3 1.institute of Microelectronics and Solid State Electronics,University of Electronic Science and Technol- ogy of china,Chengdu 610054,china 2.institute of Mathematics and Software Science,Sichuan Normal University,Chengdu 610068,china 3.institute of Chemical Materials,china Academy of Engineering Physics,Mianyang 62.000,china institute of Microelectronics and Solid State Electronics University of Electronic Science and Technology of China Chengdu 610054 China institute of Mathematics and Software Science Sichuan Normal University Chengdu 610068 China institute of Chemical Materials China Academy of Engineering Physics Mianyang 621000 China

ZnO adsorption on sapphire (0001) surface is theoretically calculated by using a plane wave ultrasoft pseudo-potential method based on ab initio molecular dynamics. The results reveal that the surface relaxation in the first layer Al-O is reduced, even eliminated after the surface adsorption of ZnO, and the chemical bonding energy is 434.3(±38.6) kJ·mol?1. The chemical bond of ZnO (0.185 ± 0.01 nm) has a 30° angle away from the adjacent Al-O bond, and the stable chemical adsorption position of the Zn is deflected from the surface O-hexagonal symmetry with an angle of about 30°. The analysis of the {2. populations, density of state and bonding electronic density before and after the adsorption indicates that the chemical bond formed by the O2.of the ZnO ? and the surface Al3+ has a strong ionic bonding characteristic, while the chemical bond formed by the Zn2. and the surface O2.has an obvious covalent characteristic, which ? comes mainly from the hybridization of the Zn 4s and the O 2. and partially from that of the Zn 3d and the O 2..

关键词： α-Al2.3 (0001) ZnO ab initio molecular dynamics chemical adsorption density of states

AB_(2.-type rare earth-based compounds with C-15 structure:Looking for reversible hydrogen storage materials

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第5期42卷 803-816,I0001页

作者： Hao Shen Junxian Zhang Valerie Paul-Boncour Ping li Zhinian li Yuanfang Wu lijun Jiang National Engineering Research Center of Nonferrous Metals Materias and Products for New energy GRINM Group Co.LtdBeijing00088China Univ Paris Est Creteil CNRSICMPEUMR 71822 rue Henri Dunant94320ThiaisFrance institute for Advanced Materials and Technology University of Science and TechnologyBeijing100083China GRIMAT Engineering institute Co. Ltd.Beijing101407China

AB_(2.-type(A=rare earth,B=transition metal)intermetallic compounds with C15 structure can easily absorb large amount of hydrogen,showing their potential use as hydrogen storage *** crucial problem hindering their application is hydrogen induced amorphization(HIA),which leads to the irreversible hydrogen sorption *** stability of the AB_2.Laves phase compounds,the structural properties,the hydrogenation properties and the controlling factors of HIA are discussed in this *** with other factors,the atomic radii ratio r_A/r_B is the most important one influencing the ***-element substitution is an efficient way to suppress or limit HIA and may enable AB_2.compounds to be suitable for hydrogen storage.

关键词： Rare earth-based AB_2.type compounds Hydrogenation properties Hydrogen induced amorphization Elemental substitution