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First-Principles Study of Fe-Doped ZnO Nanowires

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Chinese Physics Letters 2011年第12期28卷 207-210页

作者： zhang fu-chun zhang Wei-Hu DONG Jun-Tang zhang Zhi-Yong College of Physics and Electronic Information Yan'an UniversityYan'an 716000 Information Science and Technology Institution Northwest UniversityXi'an 710127

Using first-principles theory,we predict magnetic,electronic and optical properties in Fe-doped ZnO *** results show that ferromagnetic(FM)coupling of configuration V is the most stable,and the strong hybridization effect between Fe 3d and O 2p states is found near the Fermi level,and it is obvious that the ferromagnetic system is electron−spin polarization of 100%and *** antiferromagnetic(AFM)coupling,the system generates small spin polarization near the Fermi level,indicating *** magnetic moments mainly arise from Fe 3d *** addition,the results of optical properties show that the Fe-doped ZnO nanowires have apparent absorption peaks in the ultraviolet band and that there is a small red shift and a strong blue shift in the near and far ultraviolet band,indicating that Fe-doped ZnO nanowires are a type of magneto-optical materials with great promise.

关键词： nanowires ultraviolet coupling

The Field Emission Characteristics of Titanium-Doped Nano-Diamonds

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Chinese Physics Letters 2012年第1期29卷 272-275页

作者： YANG Yan-Ning zhang Zhi-Yong zhang fu-chun DONG Jun-Tang ZHAO Wu ZHAI chun-Xue zhang Wei-Hu College of Physics and Electronic Information Yan’an UniversityYan’an 716000 School of Information Science and Technology Northwest UniversityXi’an 710127

An electrophoresis solution,prepared in a specific ratio of titanium (Ti)-doped nano-diamond,is dispersed by ultrasound and the nano-diamond coating is then deposited on a polished Ti substrate by *** high^-temperature vacuum annealing,the appearance of the surface and the microstructures of the coating are observed by a metallomicroscope,scanning electron microscopy and Raman *** field emission characteristics and luminescence features are also tested,and the mechanism of the field emission characteristics of the Ti-doped nano-diamond is *** experimental results show that under the same conditions,the diamond-coated surface (by deposition) is more uniform after doping with 5 mg of Ti *** with the undoped nano-diamond cathode,the turn-on fields decline from 6.95 to 5.95 V/μ*** the electric field strength is 13.80 V/μm,the field emission current density increases to 130.00 μA/cm^(2).Under the applied fields,the emission current is stable and the luminescence is at its best,while the field emission characteristics of the 10 mg Ti-doped coating become worse,as does the *** reason for this could be that an excessive amount of TiC is generated on the surface of the coating.

关键词： spectroscopy coating Titanium

Research on immunosensor based on porous silicon

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Optoelectronics Letters 2008年第5期4卷 328-330页

作者： XUE Tao LV Xiao-yi JIA Zhen-hong HOU Shi-bin zhang fu-chun School of physies Xinjiang University Urumgi 830046 China School of Electronic and Information Engineer Xi ＇an Jiaotong University Xi ＇an 710049 China School of Information Science ＆ Engineering Xinjiang University Urumqi 830046 China Key Laboratory of Biological Resources and Gene Engineering of Xinjiang College of Life Sciences and Technology Xinjiang University Urumgi 830046China.

Porous silicon is functionalized using thermal oxidation and silanization. The HYSA antibodies are immobilized to the porous surface in this paper. The changes in the reflection spectrum and photoluminescence spectrum are investigated when BSA are attached to the PS surface. The result shows that the luminescence peak of PS disappears. After the antigen-antibody reaction,the higher light emission is observed and the reflection spectrum also red shifts. Therefore,this research lays a foundation for the development of sensitive label-free optical immunosensor.

关键词：敏感器件硅硅烷化氧化 HYSA抗体

The preface: Interplay of topological and magnetic orders in the Mn-Bi-Te family

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National Science Review 2024年第2期11卷 6-7页

作者： fu-chun zhang Hai-Zhou Lu X.C.Xie Kavli Institute for Theoretical Sciences University of Chinese Academy of Sciences Department of Physics Southern University of Science and Technology (SUSTech) International Center for Quantum Materials School of Physics Peking University

The discovery and synthesis of MnBi2Te4in 2013 initially garnered little attention [1]. Yet, the revelation of its topological properties in 2019 [2–6] sparked a surge of research into the MnBiTe family. These extensive studies are primarily driven by two objectives:the realization of a high-temperature quantum anomalous Hall effect （QAHE） and the exploration of exotic phases born from the interplay of topological and magnetic orders,

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Organic reactions in chiral micelles *** structural effects on the asymmetric oxidation of prochiral sulfides in chiral micelles

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Chinese Journal of Chemistry 1990年第1期8卷 89-96页

作者： zhang,Yong-Min fu,chun-Ling FAN,Wei-Qiang Department of Chemistry,Hangzhou University,Hangzhou 310028 Department of Chemistry Hangzhou University Hangzhou 310028

A variety of phenyl alkyl sulfides were oxidized enantioselectively with NaIO_4 in chiral micellar systems formed from eight chiral surfactants,to give optical active *** enantiomer excesses ranged from 1.6 to 15.0%.To understand the mechanistic detail of this asymmetric oxi- dation in chiral micelle,the effects of structure both in substrates and surfactants on the optical yield of the oxidation were studied and ***,increasing the alkyl chain length both in sur- factants and in substrates enhances the optical yield,also the surfactant with hydroxy group at its appropriate position gives better enantioselectivity,suggesting the enzymic characteristics of the chiral micelle.

关键词： Organic reactions in chiral micelles 7.The structural effects on the asymmetric oxidation of prochiral sulfides in chiral micelles

Precise immobilization of metal single atoms into a porphyrinic metal-organic framework for an efficient alkene hydrosilylation

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Nano Research 2024年第7期17卷 5914-5921页

作者： chun-Ying Chen Qi-Jie Mo fu-Zhen Li Hai-Li Song Li zhang MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional MaterialsSchool of ChemistrySun Yat-Sen UniversityGuangzhou 510006China

Alkene hydrosilylation is one of the most concise and atom-economical methods to synthesize organosilicon ***,we reported the precise immobilization of metal single atoms(M-SAs;M=Ru,Rh,Ir,Pd,Pt,and Au)into a porphyrinic metalorganic framework(MOF)of PCN-222(PCN=porous coordination network),and then applied the resultant MOF composites of M-SAs@PCN-222 to alkene *** solvent-free conditions,Pt-SAs@PCN-222 displayed an especially high catalytic efficiency with the turnover frequency up to 119 s−1 and the maximum turnover number of 906,250 at room *** and theoretical studies revealed that there existed strong interactions between Pt-SAs@PCN-222 and the substrates,which helped to condense the substrates in the cavities of the porous *** density functional theory calculations and molecular dynamics simulations disclosed that PCN-222 could transfer electrons to Pt-SAs to enhance the silane oxidative addition and drive the reaction to proceed smoothly via Chalk–Harrod pathway.

关键词： alkene hydrosilylation single atom catalysts metal-organic frameworks precision chemistry synergistic catalysis

The preface: Toward higher-Tc superconductivity under lower pressure——from binary to ternary superhydrides

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National Science Review 2024年第7期11卷 7-8页

作者： fu-chun zhang Ho-kwang Mao Xin-Cheng Xie Kavli Institute for Theoretical Sciences University of Chinese Academy of Sciences Shanghai Advanced Research in Physical Sciences Center for High Pressure Science and Technology Advanced Research International Center for Quantum Materials School of Physics Peking University

Superconductivity——the phenomenon of complete vanishing of electrical resistance and expulsion of magnetic field——is the paramount electromagnetic property for technological advancement that is only shackled by th... 详细信息

关键词： HYDRIDE

Photocatalytic degradation of methylene blue over MIL-100(Fe)/GO composites: a performance and kinetic study

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International Journal of Coal Science & Technology 2024年第3期11卷 208-222页

作者： Yuxue Wei Zhiyuan fu Yingzi Meng chun Li fu Yin Xue Wang Chenghua zhang Lisheng Guo Song Sun School of Chemistry and Chemical Engineering Anhui UniversityHefei230601AnhuiChina Anhui Tanxin Technology Co. LtdHuaibei235141AnhuiChina

Adsorption coupled with photocatalytic degradation is proposed to fulfill the removal and thorough elimination of organic ***,we report a facile hydrothermal synthesis of MIL-100(Fe)/GO *** adsorption and photocatalytic degradation process of methylene blue(MB)on MIL‐100(Fe)/GO composites were systematically studied from performance and kinetic perspectives.A possible adsorption‐photocatalytic degradation mechanism is *** optimized 1M8G composite achieves 95%MB removal(60.8 mg/g)in 210 min and displays well recyclability over ten *** obtained MB adsorption and degradation results are well fitted onto Langmuir isotherm and pseudo‐second order kinetic *** study shed light on the design of MOFs based composites for water treatment.

关键词： Graphene oxide Metal organic frameworks Methylene blue Adsorption Photocatalytic degradation

Synthesis of highly concentrated,carrier free ^(188)Re-mercaptoacetyltriglycine

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Nuclear Science and Techniques 2002年第4期13卷 237-243页

作者： zhang Xiu-Li, WANG Yong-Xian, LI Jun-Ling, zhang chun-fu, WANG Li-Hua,YIN Duan-Zhi(Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800) Shanghai Institute of Nuclear Research the Chinese Academy of Sciences 201800

Chelation of 188Re to compounds such as MAG3 will further reduce the radiation dose to the patient in case of balloon rupture through the rapid excretion from the body. In order to prepare highly concentrated, carrier free 188Re-MAG3, Sbenzoyl mercaptoacetyltriglycine (S-Bz-MAG3) was synthesized, labeled with carrier free 188Re. The overall yield of S-Bz-MAG3 is higher than those published in theliterature. Dependence of the labeling yield of 1ssRe-MAG3 upon concentrations of reducing agent, pH, reaction time, etc. was examined and optimum conditions were confirmed. The concentration procedure was succeeded with Sep-Pak C18 cartridge to obtain highly concentrated 1s8Re-MAG3. In the case of optimun conditions, the labeling yield of 188Re-MAG3 was more than 98%. Radiochemical purity of 188ReMAG3 was more than 92% after 24 hour storage at room temperature.

关键词：放射同位素 ^188Re 放射免疫疗法