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Chinese Journal of Structural Chemistry 2015年第6期34卷 953-959页

作者： HU Ling-Xia zhang bi-song WU Chang-Sheng HUANG Dong-Wei QIU Jian-Ping College of Pharmaceutics and Material Engineering Jinhua Polytechnic

One novel binuclear Co（Ⅱ） coordination polymer ∞ [Co2（4,4＇-bpy）2（L）4] （1, bpy = bipyridine, HL = 2-fluorbenzoic acid） has been hydrothermally synthesized and structurally characterized by elemental analysis, IR and X-ray single-crystal diffraction. Complex 1 crystallizes in the monoclinic system, space group P21/c with a = 11.163（2）, b = 21.943（4）, c = 9.6381（19） A, β = 113.92（3）°, V= 2158.2（7） A3, Z= 4, Dc = 1.518 g/cm^3, Mr = 493.31, F（000） =1004, R = 0.0303 and wR = 0.0808 for 3614 observed reflections （I〉 2σ（I））. Complex I exhibits a 3D Schlafli symbol （4.62）（4.66.83） topological framework, and the magnetic characterization shows weak antiferromagnetic coupling exchange between two Co ions.

关键词： Co(Ⅱ) complex coordination polymer crystal structure magnetic properties topological framework

Multilayer core–shell structured FeNi_(3)@C with enhanced interfacial polarization for microwave absorbers

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Nano Research 2025年第2期18卷 833-842页

作者： Shaohan Guo Junying zhang Chengyou Lin Jin Ge song bi Zhi-Ling Hou College of Mathematics and Physics Beijing University of Chemical TechnologyBeijing 100029China School of Physics and Optoelectronic Engineering Beijing University of TechnologyBeijing 100124China National Key Laboratory of Electromagnetic Information Control and Effects Shenyang Aircraft Design and Research InstituteShenyang 110035China 501 Department Xi’an Research Institute of High-TechXi’an 710025China

Magnetoelectric composites can achieve magneto-electric synergy to optimize impedance ***,it is challenging to enhance the broadband absorption performance for thin thickness ***,FeNi_(3)@C composite with magnetic alloy core and N-doped macroporous multilevel layered carbon shell was constructed by hierarchical interface *** uniform multilevel layered carbon shell could induce interfacial polarization and multiple scattering,and further endows enhanced electromagnetic attenuation and optimized impedance *** ultra-thin broadband absorber with an effective absorption bandwidth of 7.4 GHz is achieved at a thickness of only 1.6 ***,full-band absorption from 2 to 18 GHz at a thickness of 9.8 mm is realized through metastructure *** work provides an alternative strategy to prepare coreshell structured magnetoelectric composites for ultra-thin and broadband absorbers.

关键词： covalent organic frameworks(COFs) FeNi_(3)@C core-shell structure interfacial polarization impedance matching

异双桥二维镍(Ⅱ)配位聚合物_∞~2[Ni(μ-4,4'-bpy)_(2/2)(μ-L)_(4/2)](HL=2-indolyl-formic acid)的水热合成和晶体结构

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无机化学学报 2005年第4期21卷 515-518页

作者：张必松应桃开金华大学师范学院金华321017 浙江师范大学化学系金华321017

以分子识别为基础、分子组装为手段、组装体功能为目标的超分子化学是一个正在迅速发展并充满活力的新型交叉学科.超分子化学在生命科学和信息科学、高技术结构材料和功能材料等方面具有广阔的应用前景.4,4'-联吡啶能够跟多种过渡金属... 详细信息

以分子识别为基础、分子组装为手段、组装体功能为目标的超分子化学是一个正在迅速发展并充满活力的新型交叉学科.超分子化学在生命科学和信息科学、高技术结构材料和功能材料等方面具有广阔的应用前景.4,4'-联吡啶能够跟多种过渡金属组装成一维、二维和三维超分子,有关非线性光学性能、催化作用、光电转换性能的研究成果已见报道[1～3].

关键词：镍(Ⅱ)配位聚合物晶体结构水热合成异双桥分子结构 β-引哚酸生物碱

A 400 MHz Low Noise Amplifier at Cryogenic Temperature for Superconductor Filter System

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Journal of Electronic Science and Technology of China 2007年第3期5卷 230-233页

作者： Guo-bin Wang Xiao-Ping zhang bi-song Cao wifla Department of Physics Tslnghua University Beijing 100084 China

A cryogenic low noise amplifier （LNA） using Agilent high electron mobility transistor （HEMT） for 380 MHzto 480 MHz is designed and fabricated, and the excellent cryogenic performance in superconducting receiver front-end for communication system is achieved. A special input impedance matching topology is implemented to provide low noise figure （NF） and good input matching in this cryogenic LNA design. The measurement results show that the NF is within 0.25 dB from the minimum NF of a single transistor, the power gain is above 20 dB, the flatness is within 1 dB, and the maximum input return loss is lower than -20 dB in bandwidth.

关键词： Cryogenic low noise amplifier HTS fiter magnetic core inductor with high Q value superconductor receiver front-end.

Zooplankton community composition in summers of 2021and 2022 in the northern East China Sea and Yellow Sea,and their linkage with abiotic and biotic factors

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Journal of Oceanology and Limnology 2025年第1期43卷 159-176页

作者： Dongjie GUO Fang zhang Shuangyan zhang song SUN CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China College of Marine Science University of Chinese Academy of SciencesQingdao 266071China Jiaozhou Bay National Marine Ecosystem Research Station Institute of OceanologyChinese Academy of SciencesQingdao 266071China

The northern East China Sea and Yellow Sea are highly dynamic marginal seas,serving as important fishing grounds and primary areas for *** zooplankton community structure,including abundance,biovolume,and normalized biovolume size spectra(NBSS)within this ecosystem in summers 2021 and 2022 was assessed through ZooScan digital imaging *** abundances of zooplankton in summers 2021 and 2022 were 3364.22±2190.53 and 4435.52±2520.06 inds./m^(3),respectively,whereas the corresponding biovolumes were 649.10±519.63 and 1064.86±1254.87 mm^(3)/m^(3),*** copepods as the dominant zooplankton functional group in terms of abundance in both years,while chaetognath and medusae were the dominant groups in terms of *** dominance of medusae and chaetognath in terms of biovolume,along with the flatter slopes of NBSS compared to a stable community,indicated that more energy accumulated in gelatinous organisms within the study *** were significant positive relationships between temperature and tunicates or medusae,with a significantly higher population size observed in summer 2022 than in *** lower abundance and biovolume of zooplankton,mainly of small copepods,in summer 2021 may be related to the larger population size of the large jellyfish and the proliferation of green *** investigation provided basic data and fundamental insights for achieving a comprehensive understanding of zooplankton community structure and their long-term dynamics.

关键词： zooplankton community spatial distribution global warming Nemopilema nomurai Ulva prolifera

Molecular dynamics simulations of helium transport through inorganic mineral nanopores

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Science China Earth Sciences 2025年第1期68卷 237-252页

作者： Dandan song Ping GUAN Chi zhang Jiahao REN School of Earth and Space Sciences Peking UniversityBeijing100871China

Helium transport through nanoscale inorganic mineral pores and pore throats is essential for its overall *** elucidate helium's transport dynamics within nanopores,we employed equilibrium and non-equilibrium molecular dynamics simulations to investigate helium's static self-diffusion and pressure-driven flow in quartz slit-shaped *** also introduced water and various gases,including hydrogen,methane,ethane,nitrogen,and carbon dioxide,into the nanopores to assess their influence on helium *** findings indicate minimal helium adsorption on quartz pore *** conditions where the pore size is less than 5 nm and the pressure under 10 MPa,environmental factors markedly influence helium *** pore sizes,high temperatures,and low gas pressures enhance helium desorption and facilitate faster *** observed a positive correlation between helium flow velocity and factors such as pore size,pressure gradient,and surface smoothness of the ***,the presence of pore water and carrier gases in quartz nanopores,which diffuse more slowly than helium,tends to reduce helium surface adsorption and slow its *** the carrier gases studied,nitrogen showed similar adsorption capacity,diffusivity,and stability to helium,while carbon dioxide displayed the highest adsorption capacity and the slowest diffusion rate,markedly differing from *** on the simulation results,we concluded that water and carrier gases primarily function as transport mediums in helium migration,moving together with ***,which shares similar properties with helium,effectively assists in this co-migration ***,carbon dioxide,due to its high adsorption capacity and slow diffusion,tends to be lost during *** a result,gas reservoirs with high nitrogen levels and low carbon dioxide levels are more likely to have higher helium ***,the smaller pore sizes and higher gas pressures in caproc

关键词： Helium transport Slit nanopores Molecular dynamics simulations Diffusion Flow carriers

Mo_(2)C Nanoparticles Supported on N,P Co-doped Carbon by Molten Salts Strategy for Efficient Electrocatalyst Towards Hydrogen Evolution Reaction

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Chemical Research in Chinese Universities 2025年第1期41卷 101-105页

作者： bi Xinyue zhang Wenting TANG Duihai XIN Shigang ZHAO Zhen Institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal UniversityShenyang110034P.R.China Experimental Center Shenyang Normal UniversityShenyang110034P.R.China

In view of recent environmental concerns,electrochemical water splitting for hydrogen(H2)as one of the important reactions has getting more and more attention in these ***,we synthesized a series of Mo,N,and P co-doped carbons as efficient electrocatalysts to replace the expensive platinum-based *** the final products,the combination of Mo_(2)C nanoparticles(NPs)and N,P co-doped carbons were fabricated using a simple molten salt *** notably,KCl as the template could be recycled and reused via water *** ratios of the precursors could affect the structure of the final production,and therefore further determine the performance of electrocatalytic towards hydrogen evolution reaction(HER).Owing to extensive supplies of active sites and heterogeneous structures that provide transfer channels for electrons,the optimal sample of GUPMo-2.00KCl exhibited the best HER activity among the as-synthesized samples,including low overpotentials,small Tafel slope,and good *** work opens up a novel prospect for the designing of high-performance electrocatalysts.

关键词： Composite material Molten salt Hydrogen evolving reaction Carbon Mo_(2)C nanoparticle

Optimizing the ORR performance of PtMnM ternary intermetallics by tuning the surface strain

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SCIENCE CHINA-CHEMISTRY 2025年第2期68卷 536-542页

作者： song, Min Luo, Guanyu zhang, Qian Hu, Hanyu Wang, Deli Huazhong Univ Sci & Technol HUST Sch Chem & Chem Engn Key Lab Mat Chem Energy Convers & Storage Minist Educ Wuhan 430074 Peoples R China

Identifying the descriptors that control catalytic performance is key to design catalysts with high activity and stability. As indirect descriptors related to catalytic activity, modulating the Pt-Pt interatomic distance and d-band center can effectively enhance the ORR activity. It is well recognized that the Pt-Pt interatomic distance is strongly correlated with the surface strain. Herein, PtMnM/C ternary intermetallics are constructed through partially replacing Mn in PtMn/C binary intermetallics with the other transition metal (M = Fe, Co, Ni, and Cu). The 3d-transition metal doping induces surface strain, and the ORR performance of PtMnM/C exhibits volcano relationship relative to both the Pt-Pt interatomic distance and d-band center. The PtMnCo/C with optimum strain exhibits the highest mass activity (1.06 A mgPt-1) at 0.9 V, which is 2.6 and 4.6 times higher than that of PtMn/C and commercial Pt/C catalysts, respectively. In addition, PtMnCo/C shows good durability with only 10 mV half-wave potential decay after 50,000 potential cycles.

关键词： oxygen reduction reaction electrocatalysts ternary intermetallics surface strain electronic structure

Co-loading Pd and CeO_(2)on Silicalite-1 as High-performance Catalyst for Methane Dry Reforming Reaction

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Chemical Research in Chinese Universities 2025年第1期41卷 15-20页

作者： XU Jing zhang Rui WANG Ke WANG Xiao song Shuyan zhang Hongjie State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022P.R.China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei230026P.R.China Department of Chemistry Tsinghua UniversityBeijing100084P.R.China

The methane dry reforming(DRM)reaction can convert CO_(2)and CH_(4),both of which contribute to climate change,into syngas,which holds great significance in mitigating specific environmental issues stemming from the greenhouse ***,the challenges that persist include the substantial energy consumption and the catalyst’s susceptibility to deactivation,both of which necessitate ***,we developed a catalyst,PdCe/S1,featuring small-sized Pd species and CeO_(2)stabilized on pure silicon zeolite(silicalite-1),which is employed in the DRM *** can achieve 97%CH_(4)conversion and 98%CO_(2)conversion at 750℃,surpassing binary Pd/CeO_(2)and Pd/S1 *** small size of CeO_(2)stabilized by silicalite-1 promotes oxygen defects formation and enhances the CO_(2)adsorption *** introduction of silicalite-1 further enhances the interaction between Pd and CeO_(2),boosting DRM performance.

关键词： Dry reforming of methane CeO_(2) Zeolite

FDI、国际贸易及我国经济增长的协整分析与VECM模型

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国际贸易问题 2006年第2期 73-78页

作者：康赞亮张必松华中科技大学经济学院中国人民大学商学院

本文利用我国1983-2004年的经济数据进行实证检验,根据协整理论建立向量误差修正模型(VECM)。实证结果说明外国直接投资、国际贸易与经济增长间具有长期均衡关系,且我国国内生产总值的增长与外国直接投资有双向因果关系,但相互影响的程... 详细信息

本文利用我国1983-2004年的经济数据进行实证检验,根据协整理论建立向量误差修正模型(VECM)。实证结果说明外国直接投资、国际贸易与经济增长间具有长期均衡关系,且我国国内生产总值的增长与外国直接投资有双向因果关系,但相互影响的程度不同;我国为出口导向型经济增长国家且外国直接投资对国际贸易具有促进作用.

关键词：外国直接投资经济增长协整分析向量误差修正模型 FDI 国际贸易 VECM模型