检索结果-内蒙古大学图书馆

Porous Microreactor Chip for Photocatalytic Seawater Splitting over 300 Hours at Atmospheric Pressure

Nano-Micro Letters 2025年第8期17卷 251-263页

作者： Desheng Zhu Zhipeng Dong Chengmei Zhong Junhong Zhang Qi Chen Ni Yin Wencheng Jia Xiong Zheng Fengzai Lv Zhong Chen Zhenchao Dong Wencai Huang Department of Electronic Engineering School of Electronic Science and TechnologyXiamen UniversityXiamen 361005People’s Republic of China Fuzhou Fuzhi Photocatalysis Research Center Fuzhou 350007People’s Republic of China i-Lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123People’s Republic of China Hefei National Research Center for Physical Sciences at the Microscale and CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026People’s Republic of China State Key Laboratory of Physical Chemistry of Solid Surfaces Xiamen UniversityXiamen 361005People’s Republic of China

Photocatalytic seawater splitting is an attractive way for producing green *** progresses have been made recently in catalytic efficiencies,but the activity of catalysts can only maintain stable for about 10 ***,we develop a vacancy-engineered Ag_(3)PO_(4)/CdS porous microreactor chip photocatalyst,operating in seawater with a performance stability exceeding 300 *** is achieved by the establishment of both catalytic selectivity for impurity ions and tailored interactions between vacancies and sulfur *** transport of carriers with strong redox ability is ensured by forming a heterojunction within a space charge region,where the visualization of potential distribution confirms the key design concept of our ***,the separation of oxidation and reduction reactions in space inhibits the reverse recombination,making the chip capable of working at atmospheric ***,in the presence of Pt co-catalysts,a high solar-to-hydrogen efficiency of 0.81%can be achieved in the whole durability *** using a fully solar-driven 256 cm2 hydrogen production prototype,a H_(2) evolution rate of 68.01 mmol h−1 m−2 can be achieved under outdoor *** findings provide a novel approach to achieve high selectivity,and demonstrate an efficient and scalable prototype suitable for practical solar H_(2) production.

关键词： Solar energy Hydrogen energy Photocatalytic seawater splitting Silver phosphate/Cadmium sulfide heterojunction

来源：评论

学校读者我要写书评

暂无评论

Study on the influence of the discharge voltage on the ignition process of Hall thrusters

引用

Plasma science and technology 2020年第9期22卷 25-37页

作者： Wenbo LI Liqiu WEI Hong LI Yongjie DING Jianning SUN Haikuo CAI Daren YU Shangmin WANG Ning GUO School of Energy Science and Engineering Harbin Institute of TechnologyHarbin 150001People's Republic of China Key Laboratory of Aerospace Plasma Propulsion Ministry of Industry and Information TechnologyHarbin 150001People's Republic of China Science and Technology on Vacuum Technology and Physics Laboratory Lanzhou Institute of PhysicsLanzhou 730000People's Republic of China

A high-speed charge-coupled device camera was used to capture images of the plume and acceleration channel of a Hall effect thruster during ignition at different discharge *** better understand the influence of changes in the discharge voltage on the plasma parameters during thruster ignition,a particle-in-cell numerical model was used to calculate the distribution characteristics of the ion density and electric potential at different ignition moments under different discharge *** results show that when the discharge voltage is high,the ion densities in the plume and acceleration channel are significantly higher at the initial phase of thruster ignition;with the gradual strengthening of the ignition process,the propellant avalanche ionization during thruster ignition occurs earlier and the pulse current peak *** main reason for these phenomena is that the change in the discharge voltage results in different energy acquisitions of the emitted electrons entering the thruster channel.

关键词： Hall effect thruster ignition process discharge voltage PIC simulation CCD image

来源：评论

学校读者我要写书评

暂无评论

Progress in MXene-based catalysts for oxygen evolution reaction

引用

Electron 2024年第1期2卷 48-67页

作者： Jieli Chen Xiaohong Gao Jing Li Zhenye Kang Juan Bai Tianjiao Wang Yuliang Yuan Chenghang You Yu Chen Bao Yu Xia Xinlong Tian School of Marine Science and Engineering Hainan Provincial Key Lab of Fine ChemistrySchool of Chemistry and Chemical EngineeringHainan UniversityHaikouChina School of Chemistry and Physics Queensland University of TechnologyBrisbaneQueenslandAustralia Key Laboratory of Macromolecular Science of Shaanxi Province School of Materials Science and EngineeringShaanxi Normal UniversityXi'anChina School of Chemistry and Chemical Engineering State Key Laboratory of Materials Processing and Die&Mould TechnologyKey Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education)Hubei Key Laboratory of Material Chemistry and Service FailureWuhan National Laboratory for OptoelectronicsHuazhong University of Science and Technology(HUST)WuhanChina

Electrochemical water splitting for hydrogen generation is considered one of the most promising strategies for reducing the use of fossil fuels and storing renewable electricity in hydrogen ***,the anodic oxygen evolution process remains a bottleneck due to the remarkably high overpotential of about 300 mV to achieve a current density of 10 mA cm^(−2).The key to solving this dilemma is the development of highly efficient catalysts with minimized overpotential,long-term stability,and low *** a new 2D material,MXene has emerged as an intriguing material for future energy conversion technology due to its benefits,including superior conductivity,excellent hydrophilic properties,high surface area,versatile chemical composition,and ease of processing,which make it a potential constituent of the oxygen evolution catalyst *** review aims to summarize and discuss the recent development of oxygen evolution catalysts using MXene as a component,emphasizing the synthesis and synergistic effect of MXene-based composite *** on the discussions summarized in this review,we also provide future research directions regarding electronic interaction,stability,and structural evolution of MXene-based oxygen evolution *** believe that a broader and deeper research in this area could accelerate the discovery of efficient catalysts for electrochemical oxygen evolution.

关键词： MXene-based catalysts oxygen evolution reaction water splitting

来源：评论

学校读者我要写书评

暂无评论

Surface heterojunction based on n-type low-dimensional perovskite film for highly efficient perovskite tandem solar cells

引用

National science Review 2024年第5期11卷 244-253页

作者： Xianyuan Jiang Qilin Zhou Yue Lu Hao Liang Wenzhuo Li Qi Wei Mengling Pan Xin Wen Xingzhi Wang Wei Zhou Danni Yu Hao Wang Ni Yin Hao Chen Hansheng Li Ting Pan Mingyu Ma Gaoqi Liu Wenjia Zhou Zhenhuang Su Qi Chen Fengjia Fan Fan Zheng Xingyu Gao Qingqing Ji Zhijun Ning School of Physical Science and Technology Shanghai Tech University Department of Modern Physics University of Science and Technology of China i-Lab CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Shanghai Synchrotron Radiation Facility (SSRF) Shanghai Advanced Research InstituteChinese Academy of Sciences

Enhancing the quality of junctions is crucial for optimizing carrier extraction and suppressing recombination in semiconductor devices. In recent years, metal halide perovskite has emerged as the most promising next-generation material for optoelectronic devices. However, the construction of high-quality perovskite junctions, as well as characterization and understanding of their carrier polarity and density,remains a challenge. In this study, using combined electrical and spectroscopic characterization techniques,we investigate the doping characteristics of perovskite films by remote molecules, which is corroborated by our theoretical simulations indicating Schottky defects consisting of double ions as effective charge *** a post-treatment process involving a combination of biammonium and monoammonium molecules, we create a surface layer of n-type low-dimensional perovskite. This surface layer forms a heterojunction with the underlying 3D perovskite film, resulting in a favorable doping profile that enhances carrier extraction. The fabricated device exhibits an outstanding open-circuit voltage(VOC) up to 1.34 V and achieves a certified efficiency of 19.31% for single-junction wide-bandgap（1.77 eV） perovskite solar cells, together with significantly enhanced operational stability, thanks to the improved separation of carriers. Furthermore, we demonstrate the potential of this wide-bandgap device by achieving a certified efficiency of 27.04% and a VOCof 2.12 V in a perovskite/perovskite tandem solar cell configuration.

关键词： perovskite solar cells field effect transistors heterojunction

来源：评论

学校读者我要写书评

暂无评论

Design of Electrodes and Electrolytes for Silicon-Based Anode Lithium-Ion Batteries

引用

Energy & Environmental Materials 2025年第2期8卷 1-33页

作者： Xiaoyi Chen Bin Wang Yaowen Ye Jin Liang Jie Kong MOE Key Lab of Materials Physics and Chemistry in Extraordinary Conditions Shaanxi Key Laboratory of Macromolecular Science and TechnologySchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Minmetal Exploration&Development CO.LTD Beijing 100010China Key Laboratory of Flexible Electronics of Zhejiang Provience Ningbo Institute of Northwestern Polytechnical UniversityNingbo 315103China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518063China

The development of lithium-ion batteries with high-energy densities is substantially hampered by the graphite anode's low theoretical capacity(372 mAh g^(-1)).There is an urgent need to explore novel anode materials for lithium-ion ***(Si),the second-largest element outside of Earth,has an exceptionally high specific capacity(3579 mAh g^(-1)),regarded as an excellent choice for the anode material in high-capacity lithium-ion ***,it is low intrinsic conductivity and volume amplification during service status,prevented it from developing *** difficulties can be successfully overcome by incorporating carbon into pure Si systems to form a composite anode and constructing a buffer *** review looks at the diffusion mechanism,various silicon-based anode material configurations(including sandwich,core-shell,yolk-shell,and other 3D mesh/porous structures),as well as the appropriate binders and ***,a summary and viewpoints are offered on the characteristics and structural layout of various structures,metal/non-metal doping,and the compatibility and application of various binders and electrolytes for silicon-based *** review aims to provide valuable insights into the research and development of silicon-based carbon anodes for high-performance lithium-ion batteries,as well as their integration with binders and electrolyte.

关键词： binders electrolytes lithium-ion batteries silicon-basedanodes various structures

来源：评论

学校读者我要写书评

暂无评论

Electrodeposition of Ni particles on laser nanostructured electrodes for enhanced hydrogen evolution reaction

引用

Materials Today: Proceedings 2022年 67卷 953-958页

作者： Poimenidis, Ioannis A. Moustaizis, Stavros D. Papakosta, Nikandra Tsanakas, Michael D. Klini, Argyro Loukakos, Panagiotis A. Technical University of Crete School of Production Engineering & Management Lab of Matter Structure and Laser Physics Crete Chania 73100 Greece Foundation for Research and Technology – Hellas Institute of Electronic Structure and Laser Heraklion 70013 Greece University of Crete Department of Physics 70013 Vassilika Vouton Heraklion Greece University of Crete Department of Materials Science and Technology 70013 Vassilika Vouton Heraklion Greece

In this study, a two-step electrode fabrication process is used to enlarge the electrocatalytic area of the electrodes and improve the hydrogen evolution reaction. Nickel electrodes were laser-nanostructured, and afterward, they were galvanostatically electrodeposited, a novel approach for electrodes used for HER. SEM and EDX analysis were performed. The electrochemical evaluation provided enhanced values of overpotential (η10 = 108 mV), Tafel slope (b = −121 mV dec−1) and double layer capacitance (1945 μF cm−2) compared to the literature. The stability of the electrodes was tested by its overpotential (|η100|=264 mV) in a current density of 100 mA cm−2. © 2022

关键词： Electrodes

来源：评论

学校读者我要写书评

暂无评论

Time-dependent color-tunable room temperature phosphorescence from unusual conformational transitions in phenothiazine polymers under UV irradiation

引用

science China Chemistry 2025年第3期68卷 1091-1098页

作者： Jiwen Lu Yifan Niu Chanjuan Jin Chengheng Wu Hanyu Wang Yan Guan Ping Wang Xinghe Fan Key Lab of Environment-Friendly Chemistry and Application of Ministry of Education Key Laboratory of Polymeric Materials and Application Technology of Hunan ProvinceKey Laboratory of Advanced Functional Polymer Materials of CollegesUniversities of Hunan ProvinceCollege of ChemistryXiangtan UniversityXiangtan 411105China Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenter for Soft Matter Science and EngineeringCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Achieving color-tunable room-temperature phosphorescence(RTP),especially including blue RTP from a single-component polymer still faces a formidable ***,we wisely choose conformation-dependent phenothiazine with trifluoromethyl substituent as the side group of the phosphor monomer(Cz PT)and then copolymerize it with N-isopropylacrylamide(NIPAM)through photopolymerization to obtain polymers PPCz ***-dependent color-tunable phosphorescence from unusual quasi-equatorial(eq)to quasi-axial(ax)conformers are obtained,and the RTP color changes from orange(550 nm)to blue(470 nm)with phosphorescence lifetime up to 0.96 *** theoretical calculations confirm that the quasi-axial conformer is the preferred structure that facilitates the formation of intramolecular hydrogen bonds on the trifluoromethyl *** EPR spectra illustrate that the persistent UV irradiation generates radical cations to induce the conformational transitions first,followed by photopolymerization immobilizing the ax conformation in PPCz *** of data encryption and anti-counterfeiting are fabricated to show prompt and delayed multicolor *** work affords a simple and feasible avenue for two-dimensional color tunable room temperature phosphorescence from a single-component polymer.

关键词： polymeric room temperature phosphorescence color-tunable phosphorescence conformation-dependent time-dependent blue phosphorescence

来源：评论

学校读者我要写书评

暂无评论

Organic molecules with dual triplet-harvesting channels enable efficient X-ray scintillation and imaging

Aggregate

引用

Aggregate 2024年第3期5卷 232-238页

作者： Lisi Zhan Yalun Xu Tianhao Chen Yang Tang Cheng Zhong Qianqian Lin Chuluo Yang Shaolong Gong Department of Chemistry Hubei Key Laboratory on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhanChina Key Lab of Artificial Micro-and Nano-Structures of Ministry of Education of China School of Physics and TechnologyWuhan UniversityWuhanChina Shenzhen Key Laboratory of New Display and Storage Materials College of Materials Science and EngineeringShenzhen UniversityShenzhenChina

Organic scintillators have recently gained considerable attentions in X-ray detection for their potential applications in biomedical radiograph and security ***,the weak X-ray absorption and/or inefficient exciton utilization have limited the development and commercialization of organic ***,high-performance X-ray organic scintillators are scarce and organic scintillators with dual triplet-harvesting channels have not been explored ***,we develop several proof-of-concept sulfone-based organic molecules,C1–C7,using different alkoxy chains to manipulate molecular packing *** materials exhibit dual triplet-harvesting channels of thermally activated delayedfluorescence(TADF)and room-temperature phosphorescence(RTP)in aggregated ***,these molecules display distinct radioluminescence under the X-ray *** them,C6 behaves the highest light yield of 16,558 photons ***,clear X-ray images are demonstrated in both aggregated state and single-molecule *** spatial resolutions of 15.0 and 10.6 line pairs per millimeter(lp mm-1)are achieved for rigid andflexible scintillator screens,exceeding most reported organic and conventional inorganic *** results highlight the great potential of organic molecules with TADF and RTP nature for efficient X-ray scintillation and imaging.

关键词： alkoxy chain engineering organic scintillators radioluminescence room-temperature phosphorescence thermally activated delayedfluorescence X-ray imaging

来源：评论

学校读者我要写书评

暂无评论

Tuning the reaction path of CO_(2) electroreduction reaction on indium single-atom catalyst:Insights into the active sites

引用

Nano Research 2022年第5期15卷 4014-4022页

作者： Jiawei Zhang Gangming Zeng Lanlan Chen Wenchuan Lai Yuliang Yuan Yangfan Lu Chao Ma Wenhua Zhang Hongwen Huang College of Materials Science and Engineering Advanced Catalytic Engineer Research Center of the Ministry of EducationHunan UniversityChangsha 410082China Hefei National Laboratory for Physical Sciences at the Microscale Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of SciencesDepartment of Chemical PhysicsUniversity of Science and Technology of ChinaHefei 230026China State Key Lab of Silicon Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China

Modulating the local coordination structure of metal single-atom catalysts(SACs)is extensively employed to tune the catalytic activity,but rarely involved in regulating the reaction pathway which fundamentally determines the product ***,we report that the product selectivity of electrochemical CO_(2)reduction(CO_(2)RR)on the single-atom indium-NxC4-x(1≤x≤4)catalysts could be tuned from formate to CO by varying the carbon and nitrogen occupations in the first coordination ***,the optimal In SAC showed great promise for CO production with the maximum Faradic efficiency of 97%,greatly different from the reported In-based catalysts where the formate is the dominant *** experimental verifications and theoretical simulations reveal that the selectivity switch from formate to CO on In SACs originates from active sites shift from indium center to the indium-adjacent carbon atom,where the indium site favors formate formation and the indium-adjacent carbon site prefers the CO *** present work suggests the active sites in metal SACs may shift from the widely accepted metal center to surrounding carbon atoms,thereby offering a new implication to revisit the active sites for metal SACs.

关键词： CO_(2)reduction single atom catalysts coordination structure product selectivity active sites shift

来源：评论

学校读者我要写书评

暂无评论

MatHub-2d:二维材料输运数据库及其高迁移率二维半导体材料高通量筛选应用

引用

science China Materials 2023年第7期66卷 2768-2776页

作者：姚明佳计嘉琳李鑫朱振宇葛军饴 David J.Singh 奚晋扬杨炯张文清 Materials Genome Institute Shanghai UniversityShanghai 200444China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Zhejiang Laboratory Hangzhou 311100China Department of Physics and Astronomy University of MissouriColumbiaMO 65211USA Department of Materials Science and Engineering and Shenzhen Institute for Quantum Science&Technology Southern University of Science and TechnologyShenzhen 518055China Shenzhen Municipal Key-Lab for Advanced Quantum Materials and Devices and Guangdong Provincial Key Lab for Computational Science and Materials Design Southern University of Science and TechnologyShenzhen 518055China

近些年来二维材料因其独特的物理化学性质引起了广泛关注.载流子迁移率是材料在电子设备应用中最重要的特性之一.在本文中,我们介绍了如何通过高通量计算筛选来发现高迁移率二维半导体材料.基于最近开发的MatHub-2d数据库(包含约1900个... 详细信息

近些年来二维材料因其独特的物理化学性质引起了广泛关注.载流子迁移率是材料在电子设备应用中最重要的特性之一.在本文中,我们介绍了如何通过高通量计算筛选来发现高迁移率二维半导体材料.基于最近开发的MatHub-2d数据库(包含约1900个二维材料的结构信息及其第一性原理计算结果),以带隙、磁性、弹性模量和形变势作为搜索标准,通过初步筛选,得到133个候选者.对这些体系,我们使用形变势方法和玻尔兹曼输运理论预测了迁移率.最终,我们预测19种二维材料在室温下(300 K)具有高迁移率(>10^(3)cm^(-2)V^(-1)s^(-1))和良好的稳定性.这些材料高迁移率的来源主要是较小的形变势常数、较大的弹性模量,以及较小的有效质量.其中有两种类型的化合物值得关注,BX(X=P,As,Sb)和ZO_(2)(Z=Ge,Sn,Pb),它们具有面内各向同性高迁移率.BX中“flower-like”化学键有利于p型和n型电输运,而Z-O反键态是ZO_(2)型二维材料良好电子传导的原因.除了这些二维材料,Si_(2)P_(2)、Ga_(2)O_(2)、Ge_(2)N_(2)等同样也表现出高的电子迁移率.这些高迁移率二维材料在新型半导体电子器件中具有潜在的应用前景.

关键词： two-dimensional materials high-throughput computational screening MatHub-2d mobility

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：