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Phonon and Electron Densities of States in Amorphous Fe_(90-x)Co_(x)Zr_(10)Alloys

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Chinese Physics Letters 1995年第1期12卷 30-33页

作者： LU Zhichao XIANYU Ze li jizhou KANG Jian YE Chuntang li Zhuqi SHEN Baogen Department of Physics Northeastern UniversityShenyang 110006 China Institute of Atomic Energy Beijing 102413 Institute of Physics Academia SinicaBeijing 100080

The generalized phonon density of states(PDOS)and the valence electron density of states(EDOS)of the amorphous Fe_(90-x)Co_(x)Zr_(10)(x=4,10 and 40)alloys were measured at the room temperature by inelastic neutron-scattering and x-ray photoemission spectroscopy,*** results show that the stronger the Invar effect,the softer is the PDOS in the low-energy region and the larger is the EDOS at the Fermi energy *** enhancement of electron-phonon interaction was suggested to explain the low-energy phonon softening observed in Invar alloys.

关键词： Invar softening alloys

Data-Driven lithium-Ion Battery Cathode Research with State-of-the-Art Synchrotron X-ray Techniques

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Accounts of Materials Research 2022年第8期3卷 854-865页

作者： Zhichen Xue jizhou li Piero Pianetta Yijin liu Stanford Synchrotron Radiation lightsource SLAC National Accelerator LaboratoryMenlo ParkCalifornia 94025United States Stanford Synchrotron Radiation lightsource SLAC National Accelerator LaboratoryMenlo ParkCalifornia 94025United States 1

CONSPECTUS:The lithium-ion battery(liB)is a tremendously successful technology for energy storage thanks to its favorable characteristics including high energy density,long lifespan,affordability,and *** has been widely adopted in sectors including consumer electronics and electric vehicles,which are featured by an enormous market *** meet the ever-increasing demands for energy density and cycle life,industry and academia are continuously devoting efforts to improve the current liB *** requires an in-depth understanding of the electrochemical reaction processes and degradation/failure mech-anisms,to which advanced characterization is *** advanced synchrotron X-ray techniques with machine learning(ML)methods has been demonstrated as a powerful tool for uncovering the fundamental reaction and aging mechanisms in liB and is emerging as an important research *** group’s research has been focusing on the battery cathode,which is a major limiting factor in today’s liB *** degradation and failure of cathode materials in liB are *** chemo mechanical processes at these different length scales are intertwined and mutually ***,it is crucial to understand the underlying mechanisms of charge−lattice−morphology−kinetics interactions in battery cathodes as a function of the electrochemical *** X-ray technology has unique *** can detect lattice structure,electronic structure,chemical valence state,and multiscale morphology in different experimental modes,with high resolution and high ***,the large-scale experimental data bring great challenges in terms of reduction,analysis,and ***-driven methods based on ML can greatly assist researchers to understand,control,and predict the electrochemical behavior of the complex battery cathode *** this Account,we focus on showcasing the integration of synchrotron and ML techniques for liB cathode res

关键词： battery Battery kinetics

MXenes/CNTs-based hybrids:Fabrications,mechanisms,and modification strategies for energy and environmental applications

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Nano Research 2024年第5期17卷 3429-3454页

作者： jizhou Jiang Fangyi li Lei Ding Chengxun Zhang Arramel Xin li School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China Nano Center Indonesia Jl.PUSPIPTEK Tangerang SelatanBanten 15314Indonesia Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

Emerging two-dimensional(2D)layered metal carbide and nitride materials,commonly termed MXenes,are increasingly recognized for their applications across diverse fields such as energy,environment,and *** the past few years,MXenes/carbon nanotubes(CNTs)-based hybrids have attracted extensive attention as an important catalyst in energy and environmental fields,due to their superior multifunctions and mechanical *** review aims to address the fabrication strategies,the identification of the enhancement mechanisms,and recent progress regarding the design and modification of MXenes/CNTs-based hybrids.A myriad of fabrication techniques have been systematically summarized,including mechanical mixing,spray drying,three-dimensional(3D)printing,self-assembly/in-situ growth,freeze drying,templating,hydrothermal methods,chemical vapor deposition(CVD),and ***,the identification of the enhancement mechanisms was thoroughly discussed from the two dimensions of theoretical simulations and in-situ ***,the recent advancements in profound applications of MXenes/CNTs-based hybrids have also been carefully revealed,including energy storage devices,sensors,water purification systems,and microwave *** also underscore anticipated challenges related to their fabrication,structure,underlying mechanisms,modification approaches,and emergent ***,this review offers insights into prospective directions and the future trajectory for these promising *** is expected that this review can inspire new ideas or provide new research methods for future studies.

关键词： MXenes/carbon nanotubes(CNTs)-based hybrids fabrication applications modification strategies

Structure Refinement of Bi_(2)Sr_(1.855)Ca_(1.145)Cu_(2)O_(8) from Neutron Data

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Chinese Physics Letters 1991年第10期8卷 521-524页

作者： YE Chuntang YANG Jilian ZHANG Baisheng li jizhou KANG Jian JIN Lan DING Yongfan HE Yusheng ZHANG Jincang HE Aisheng XIANG Jiong Institute of Atomic Energy Beijing 102413 Department of Physics Tsiaghua UniversityBeijing 100084 Visiting scholar from Henan Normal University Visiting scholar from North University of Technology

Neutron diffraction study on the structure of Bi_(2)Sr_(1.855)Ca_(1.145)Cu_(2)O_(8) was carried *** refinements show that the average subcell structure for Bi_(2)Sr_(1.855)Ca_(1.145)Cu_(2)O_(8) is in the best fit of the space group Fmmm and the structure is described by alternate stacking of SrO-CuO_(2)-Ca-CuO_(2)-SrO slab and a double BiO *** oxygen layer sandwiched by the bismuth layers was conRrmed.

关键词： structure sandwich

Influence of varied drought types on soil conservation service within the framework of climate change:insights from the Jinghe River Basin,China

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Journal of Arid Land 2024年第2期16卷 220-245页

作者： BAI jizhou li Jing RAN Hui ZHOU Zixiang DANG Hui ZHANG Cheng YU Yuyang School of Geography and Tourism Shaanxi Normal UniversityXi'an 710119China College of Geomatics Xi'an University of Science and TechnologyXi'an 710054China

Severe soil erosion and drought are the two main factors affecting the ecological security of the Loess Plateau,*** the influence of drought on soil conservation service is of great importance to regional environmental protection and sustainable ***,there is little research on the coupling relationship between *** this study,focusing on the Jinghe River Basin,China as a case study,we conducted a quantitative evaluation on meteorological,hydrological,and agricultural droughts(represented by the Standardized Precipitation Index(SPI),Standardized Runoff Index(SRI),and Standardized Soil Moisture Index(SSMI),respectively)using the Variable Infiltration Capacity(VIC)model,and quantified the soil conservation service using the Revised Universal Soil Loss Equation(RUSLE)in the historical period(2000-2019)and future period(2026-2060)under two Representative Concentration Pathways(RCPs)(RCP4.5 and RCP8.5).We further examined the influence of the three types of drought on soil conservation service at annual and seasonal *** NASA Earth Exchange Global Daily Downscaled Projections(NEX-GDDP)dataset was used to predict and model the hydrometeorological elements in the future period under the RCP4.5 and RCP8.5 *** results showed that in the historical period,annual-scale meteorological drought exhibited the highest intensity,while seasonal-scale drought was generally weakest in autumn and most severe in *** intensity of all three types of drought will increase over the next 40 years,with a greater increase under the RCP4.5 scenario than under the RCP8.5 ***,the intra-annual variation in the drought intensity of the three types of drought becomes smaller under the two future scenarios relative to the historical period(2000-2019).Soil conservation service exhibits a distribution pattern characterized by high levels in the southwest and southeast and lower levels in the north,and this pattern has remained

关键词： meteorological drought hydrological drought agricultural drought soil conservation service Variable Infiltration Capacity(VIC)model Revised Universal Soil Loss Equation(RUSLE) Jinghe River Basin

Advanced carbon nitride-based single-atomphotocatalysts

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SusMat 2024年第5期4卷 70-113页

作者： Zifan Zhang Kun Xiang HaitaoWang Xin li Jing Zou Guijie liang jizhou Jiang School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhanChina Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhouChina Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyangChina

Single-atom catalysts(SACs)have rapidly become a hot topic in photocatalytic research due to their unique physical and chemical properties,high activity,and high *** many semiconductor carriers,the special structure of carbon nitride(C3N4)perfectly meets the substrate requirements for stabi-lizing SACs;they can also compensate for the photocatalytic defects of C3N4 materials by modifying energy bands and electronic ***,devel-oping advanced C3N4-based SACs is of great *** this review,we focus on elucidating efficient preparation strategies and the burgeoning photo-catalytic applications of C3N4-based *** also outline prospective strategies for enhancing the performance of SACs and C3N4-based SACs in the future.A comprehensive array of methodologies is presented for identifying and char-acterizing C3N4-based *** includes an exploration of potential atomic catalytic mechanisms through the simulation and regulation of atomic catalytic behaviors and the synergistic effects of single or multiple ***,a forward-looking perspective is adopted to contemplate the future prospects and challenges associated with C3N4-based *** encompasses considerations,such as atomic loading,regulatory design,and the integration of machine learn-ing *** is anticipated that this review will stimulate novel insights into the synthesis of high-load and durable SACs,thereby providing theoretical groundwork for scalable and controllable applications in the field.

关键词： atomic catalytic mechanism carbon nitride improvement strategies photocatalytic applica-tions single-atom catalysts

Geochemistry of Water and Suspended Particulate in the Lower Yangtze River: Implications for Geographic and Anthropogenic Effects

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International Journal of Geosciences 2012年第1期3卷 81-92页

作者： Xuyin Yuan jizhou li Changping Mao Junfeng Ji Zhongfang Yang College of Environment Hohai University Nanjing China

The lower Yangtze River undergoes intense anthropogenic activities and various natural progress compared to the upper-middle reaches. We explore the aqueous geochemistry of ions and elements of suspended particulate in order to recognize the effects of natural conditions and anthropogenic inputs on rivers. These results show that total dissolved solids of water in the lower Yangtze River are similar as those in the upper-middle reaches of mainstream, but higher in tributaries. The major elements of suspended particulate in high-flow regime (HFR) have approximate concentrations with those in low-flow regime (LFR). But remarkable high concentrations of trace elements in tributaries exhibit regardless of HFR or LFR. Multivariate statistics show the suspended particulate matter (SPM) of mainstream presents similar characteristics in flood season and diverse characteristics in dry season. While SPM of tributaries reveals different results. The majority of suspended matter originates from municipal and industrial discharge both in flood season and dry season, and a part from road runoff in flood season, showing an effect of hydrological regime. Mining activity induces remarkably high concentrations of metals regardless of HFR or LFR. Therefore, the geochemistry of SPM in the lower reach of Yangtze River are significantly affected by the anthropogenic input of different sources, which is different from the upper-middle Yangtze River.

关键词： Suspended Particulate Major Element Trace Element Hydrological Regime The Yangtze River

CARR上的应力测量中子衍射谱仪概念设计和模拟研究

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核技术 2005年第3期28卷 231-235页

作者：郭立平李际周中国原子能科学研究院核物理研究所中子散射实验室

中子衍射法是迄今为止可直接测量材料或工程部件内部深处应力场分布的唯一非破坏性方法,在工程上具有重要的应用。中国先进研究堆(CARR)中子散射工程拟建造一台应力测量中子衍射谱仪,其主要功能是测量材料中的残余应力和载荷应力。本文... 详细信息

中子衍射法是迄今为止可直接测量材料或工程部件内部深处应力场分布的唯一非破坏性方法,在工程上具有重要的应用。中国先进研究堆(CARR)中子散射工程拟建造一台应力测量中子衍射谱仪,其主要功能是测量材料中的残余应力和载荷应力。本文介绍了该谱仪的概念设计方案,并应用蒙特卡罗模拟软件 MCSTAS对设计方案进行了模拟研究,对部分中子部件参数进行了优化设计。

关键词：中子衍射仪残余应力蒙特卡罗模拟中国先进研究堆

Decolorization of Reactive Brilliant Red X-3B Simulated Dye Water by Novel Coagulants

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Decolorization of Reactive Brilliant Red X-3B Simulated Dye ...