检索结果-内蒙古大学图书馆

Robust Fe^(2+)-doped nickel-iron layered double hydroxide electrode for electrocatalytic reduction of hexavalent chromium by pulsed potential method

引用

Journal of Materials science & Technology 2022年第15期110卷 73-83页

作者： Zhifei Wang Jinbo Xue Yong Li Qianqian Shen Qi Li Xiaochao Zhang Xuguang Liu Husheng Jia Key Laboratory of Interface Science and Engineering in Advanced Materials Taiyuan University of TechnologyMinistry of EducationTaiyuan 030024China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China School of Materials Science and Engineering Southwest Jiaotong UniversityChengdu 610031China College of Chemistry and Chemical Engineering Taiyuan University of TechnologyTaiyuan 030024China

Electrocatalytic reduction of Cr(Ⅵ)to less toxic Cr(Ⅲ)is deemed as a promising *** electrocatalytic reduction is always driven by a constant cathodic potential,which exhibits a repelling action to Cr(Ⅵ)oxyanions in wastewater and consequently suppresses reduction *** order to remarkably accelerate Cr(Ⅵ)electrocatalytic reduction,we applied a pulsed potential on an Fe^(2+)-NiFe LDH/NF electrode synthesized by in situ growth of Fe^(2+)-doped NiFe LDH nanosheets on Ni foam using a spontaneous redox *** anodic potential section,HCrO_(4)^(–) anions are adsorbed on the electrode surface and reduced to Cr(Ⅲ)by Fe^(2+).Then,Cr(Ⅲ)ions are desorbed from the electrode surface under coulombic *** regeneration of Fe^(2+) and direct reduction of Cr(Ⅵ)are achieved under cathodic potential *** pulsed potential can achieve complete elimination of Cr(Ⅵ)within 60 min at an initial concentration of 10 mg L^(-1),and the removal efficiency shows a 60%increase with respect to that under constant cathodic potential.

关键词： Hexavalent chromium Electrocatalytic reduction Pulsed potential NiFe LDH Fe cycle

来源：评论

学校读者我要写书评

暂无评论

F127 assisted fabrication of Ge/r GO/CNTs nanocomposites with three-dimensional network structure for efficient lithium storage

引用

Chinese Chemical Letters 2024年第9期35卷 447-451页

作者： Hui Gu Mingyue Gao Kuan Shen Tianli Zhang Junhao Zhang Xiangjun Zheng Xingmei Guo Yuanjun Liu Fu Cao Hongxing Gu Qinghong Kong Shenglin Xiong School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Key Laboratory of the Colloid and Interface Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShandong UniversityJi’nan 250100China Jiangsu Hengshen Co. Ltd.Zhenjiang 212314China School of the Environment and Safety engineering Jiangsu UniversityZhenjiang 212013China

To solve the volume expansion and poor electrical conductivity of germanium-based anode materials,Ge/rGO/CNTs nanocomposites with three-dimensional network structure are fabricated through the dispersion of polyethylene-polypropylene glycol(F127)and reduction of *** interesting phenomenon is discovered that F127 can break GeO_(2)polycrystalline microparticles into 100 nm nanoparticles by only physical interaction,which promotes the uniform dispersion of GeO_(2)in a carbon network structure composed of graphene(rGO)and carbon nanotubes(CNTs).As evaluated as anode material of Lithium-ion batteries,Ge/rGO/CNTs nanocomposites exhibit excellent lithium storage *** initial specific capacity is high to 1549.7 mAh/g at 0.2 A/g,and the reversible capacity still retains972.4 mAh/g after 100 *** improved lithium storage performance is attributed to that Ge nanoparticles can effectively slow down the volume expansion during charge and discharge processes,and threedimensional carbon networks can improve electrical conductivity and accelerate lithium-ion transfer of anode materials.

关键词： F127 assisted fabrication Ge/rGO/CNTs nanocomposites Three-dimensional carbon network Lithium-ion batteries Cycle stability

来源：评论

学校读者我要写书评

暂无评论

Balancing the piezoelectric coefficient and carrier concentration of Bi_(2)WO_(6−x) for ultrahigh piezocatalysis

引用

Journal of Advanced Ceramics 2024年第11期13卷 1737-1747页

作者： Ying Wang Xiaoli Xu Lingbo Xiao Lutao Li Qiuhua Xu Zhenhai Wen Laishun Qin Yanmin Jia Dong-Liang Peng Wanping Chen Da Chen College of Materials and Chemistry China Jiliang UniversityHangzhou 310018China Key Laboratory of Jiangxi Province for Persistent Pollutants Control National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization and Resources RecycleNanchang Hangkong UniversityNanchang 330063China Department of Physics Zhejiang University of Science and TechnologyHangzhou 310008China Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics Southeast UniversityNanjing 211189China Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province College of EnergySoochow UniversitySuzhou 215006China State Key Laboratory of Structural Chemistry and Fujian Provincial Key Laboratory of Materials and Techniques toward Hydrogen EnergyFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710121China State Key Laboratory of Physical Chemistry of Solid Surface Fujian Key Laboratory of Surface and Interface Engineering for High Performance MaterialsCollege of MaterialsXiamen UniversityXiamen 361005China School of Physics and Technology Wuhan UniversityWuhan 430072China

Balancing the piezoelectric coefficient and carrier concentration of materials is key in the field of *** this work,Bi_(2)WO_(6) material with both piezoelectric and semiconductor properties was chosen as a model material.A one-step ethylene glycol(EG)-assisted solvothermal method was used to synthesize Bi2WO6 with oxygen *** controlling the solvothermal time and temperature,the oxygen vacancy concentration(COV)was *** COV increases,the piezoelectric coefficient decreases,the carrier concentration increases,and the hydrogen production rate first increases but then *** COV reaches 1.45×10^(12) spins·mg^(−1),the corresponding piezoelectric coefficient and carrier concentration are 13.9 pm·V^(−1) and 2.90×10^(20) cm^(−3),*** optimal hydrogen production rate per power of 2.21μmol·g^(−1)·h^(−1)·W^(−1) is equivalent to or even better than that of most reported *** piezoelectric coefficient and carrier concentration,as two factors,jointly determine the piezocatalytic *** findings of this research can provide important and deep-seated insights for better piezocatalysts in the future.

关键词： piezocatalysis oxygen vacancy carrier concentration piezoelectric coefficient hydrogen evolution

来源：评论

学校读者我要写书评

暂无评论

Recent progress on preparation and applications of layered double hydroxides

引用

Chinese Chemical Letters 2022年第10期33卷 4428-4436页

作者： Mengting Duan Shanjing Liu Qiming Jiang Xingmei Guo Junhao Zhang Shenglin Xiong School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China Key Laboratory of Colloid and Interface Chemistry Ministry of Educationand School of Chemistry and Chemical EngineeringShandong UniversityJi'nan 250100China

The properties of layered double hydroxides(LDHs),including the adjustability of cations in host layers,exchangeability of anions between layers,and tunability of the crystal structure,render them unique characteristics in preparation and *** to the structural characteristics of LDHs,this work analyzes the research status,advantages and disadvantages of the synthetic methods for LDHs,including hydrothermal,electrodeposition,co-precipitation and anion exchange *** addition,the application status and prospects are reviewed,such as photo/electrocatalysis,electrochemical energy storage,magnetic materials,pollutant adsorption,and other ***,the critical issues and solutions in the developing process of LDHs are analyzed and proposed.

关键词： Layered double hydroxides Anion exchangeability Structural adjustability Performance tunability

来源：评论

学校读者我要写书评

暂无评论

Machine learning assisted screening of binary alloys for metal-based anode materials

引用

Journal of Energy Chemistry 2025年第5期104卷 62-68页

作者： Xingyue Shi Linming Zhou Yuhui Huang Chaohui Wu Yongjun Wu Juan Li Zijian Hong State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310058ZhejiangChina Nanhu Brain-Computer Interface Institute Hangzhou 311100ZhejiangChina Zhejiang Key Laboratory of Advanced Solid State Energy Storage Technology and Applications Research Institute of Zhejiang University-TaizhouTaizhou 318000ZhejiangChina Inner Mongolia Electric Power Economic and Technological Research Institute Hohhot 010010Inner MongoliaChina College of Materials Science and Engineering Zhejiang University of TechnologyHangzhou 310014ZhejiangChina School of Engineering Hangzhou City UniversityHangzhou 310015ZhejiangChina Institute of Fundamental and Transdisciplinary Research Zhejiang UniversityHangzhou 311121China

Metal alloy anode materials with high specific capacity and low voltage have recently gained significant attention due to their excellent electrochemical performance and the ability to suppress dendrite ***,experimental investigations of metal alloys can be time-consuming and expensive,often requiring extensive experimental design and *** this study,we developed a machine learning model based on the Crystal Graph Convolutional Neural Network(CGCNN)to screen alloy anode materials for seven battery systems,including lithium(Li),sodium(Na),potassium(K),zinc(Zn),magnesium(Mg),calcium(Ca),and aluminum(Al).We utilized data with tens of thousands of alloy materials from the Materials Project(MP)and Automatic FLOW for Materials Discovery(AFLOW)*** any experimental voltage input,we identified over 30 alloy systems that have been experimentally validated with good ***,we predicted over 100 alloy anodes with low potential and high specific *** hope this work to spur further interest in employing advanced machine learning models for the design of battery materials.

关键词： CGCNN Alloy anodes Machine learning Metal-based batteries

来源：评论

学校读者我要写书评

暂无评论

Effect of Extrusion Combination Types on Microstructure and Mechanical Properties of the AZ31/GW103K Bimetallic Composite Plates

引用

Acta Metallurgica Sinica(English Letters) 2022年第12期35卷 1959-1972页

作者： Yunpeng Meng Boyu Lin Lifei Wang Jianfeng Fan Shangzhou Zhang Liwei Lu Hans Jφrgen Roven Hua Zhang Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Institute for Advanced Studies in Precision Materials Yantai UniversityYantai 264005China Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material Hunan University of Science and TechnologyXiangtan 411201China Department of Materials Science and Engineering Norwegian University of Science and Technology7491 TrondheimNorway

The AZ31/GW103 K bimetallic composite plates were prepared by co-extrusion of different combination types(sandwich extrusion type and double semicircle extrusion type),and effects of different extrusion combination types on the microstructure and mechanical properties of bimetallic composite plates were systematically *** results show that both the AZ31/GW103 K bimetallic composite plates prepared by different extrusion combination types have good metallurgical bonding,and changing the combination type does not affect the thickness of the interfacial transition layer of composite *** with the monolithic AZ31 and GW103 K extruded plates,co-extrusion can promote the dynamic recrystallization(DRX)of AZ31 and GW103 K components in composite plates,and double semicircular extrusion type has a better promotion effect on the DRX than sandwich extrusion *** addition,the texture of AZ31 in both monolithic AZ31 and AZ31/GW103 K/AZ31(A/G/A)plates is a typical(0002)basal texture,while that in the AZ31/GW103 K(A/G)composite plate shifts to the tangent direction(TD)of extruded *** with the monolithic AZ31 extruded plate,both the yield strength and tensile strength of A/G and A/G/A bimetallic composite plates are significantly *** strength of A/G/A composite plate is higher than that of A/G composite plate,but its elongation is ***,co-extrusion reduces the dislocation density of AZ31 and GW 103 K components in composite plates,and different extrusion combination types also affect the dislocation density.

关键词： Bimetallic composite plates Extrusion combination types Dynamic recrystallization Dislocation density Mechanical behavior

来源：评论

学校读者我要写书评

暂无评论

The regulation of coordination structure between cobalt and nitrogen on graphene for efficient bifunctional electrocatalysis in Zn-air batteries

引用

Journal of Energy Chemistry 2022年第5期31卷 213-221页

作者： Xinxin Shu Maomao Yang Miaomiao Liu Wei Pan Jintao Zhang Key Laboratory for Colloid and Interface Chemistry of State Education Ministry School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100ShandongChina College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014ShandongChina State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongChina

Electrocatalysts with atomically dispersed metal moieties are of importance in enhancing electrocatalysis for a specific reaction including oxygen reduction. However, it is still challenging to modulate the coordination structure of metal atoms with heteroatoms on carbon supports. Herein, an innovative and facile bridging strategy to regulate the coordination structure of cobalt with nitrogen atoms on reduced graphene oxide(r GO) sheets was developed by the interfacial complexation of amino-rich folic acid with cobalt ions on graphene oxide sheets and the subsequent thermal treatment. Typically, the actual coordination interaction between cobalt and nitrogen species was revealed by using X-ray absorption spectroscopy(XAS), exhibiting the Co-N_(4) coordination structure well-dispersed on reduced graphene *** unique structure enables the efficient oxygen reduction and evolution reactions via the favorable adsorption and desorption of intermediates. With the enhanced bifunctional electrocatalytic activities,the fabricated Zn-air battery exhibited the excellent performance with large power density of 319.8 mW cm^(-2) and good long-term stability(over 300 h). This work establishes the synthesis strategy for bridging metal atom with heteroatom on graphene sheets to enhance the bifunctional electrocatalysis toward Zn-air batteries.

关键词： Oxygen reduction reaction Synergistic effect Bifunctional electrocatalysis Bridging structure

来源：评论

学校读者我要写书评

暂无评论

一体化可拉伸的多功能电化学传感纤维构建微量汗液健康监测织物

引用

science China Materials 2024年第1期67卷 251-260页

作者：张安宁周靓靓梁琦敏王欣胡晓康贾康康储宏伟罗勇锋丘龙斌彭慧胜何思斯 Shenzhen Key Laboratory of Flexible Printed Electronics Technology School of ScienceHarbin Institute of Technology(Shenzhen)Shenzhen 518055China Department of Mechanical and Energy Engineering Southern University of Science and TechnologyShenzhen 518055China Hunan Province Key Laboratory of Materials Surface&Interface Science and Technology College of ScienceMaterial Science and Engineering SchoolCentral South University of Forestry and TechnologyChangsha 410004China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science and Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China

透气舒适的传感纺织品可以检测人体汗液中的多种生物标记物,是在日常生活中实现全面健康监测的有效途径.然而,目前的可穿戴柔性电化学纺织品缺乏伸展性,这可能会导致信号不稳定或在移动过程中损坏设备.此外,这些纺织品对多种指示器的集... 详细信息

透气舒适的传感纺织品可以检测人体汗液中的多种生物标记物,是在日常生活中实现全面健康监测的有效途径.然而,目前的可穿戴柔性电化学纺织品缺乏伸展性,这可能会导致信号不稳定或在移动过程中损坏设备.此外,这些纺织品对多种指示器的集成度有限,需要较大的表面积和大量的汗液来激活传感器.在此,我们报告了一种一体化多功能电化学生物传感器纤维,该纤维具有可拉伸性,通过微量汗液即可检测汗液中的多种生物标志物.这种生物传感器是通过将多功能碳纳米管条带以螺旋状排列的方式负载在预先拉伸的聚合物纤维芯上从而充当微电极,并且两者之间具有稳定界面.此外,通过引入超亲水鞘层,提高了生物传感器的汗液捕获效率.该生物传感器能够同时监测pH、K^(+)、Na^(+)、葡萄糖、乳酸和尿酸六种生物标记物,300%的应变下表现出稳定的传感性能.仅需1μL的汗液即可启动对六种生物标记物进行高效检测.由此编织的织物传感系统可以连续、实时地监测多种生物标记信息,从而完成人体健康状况的评估.

关键词：生物传感器生物标记物人体健康状况健康监测聚合物纤维损坏设备伸展性微电极

来源：评论

学校读者我要写书评

暂无评论

Boosting external quantum efficiency of a WSe_(2) photodetector across visible and NIR spectra through harnessing plasmonic hot electrons

引用

Photonics Research 2024年第9期12卷 1846-1857页

作者： LINLIN SHI ZIYANG ZHAO JINYANG JIAO TING JI WENYAN WANG YANXIA CUI GUOHUI LI College of Electronic Information and Optical Engineering Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of EducationKey Laboratory of Advanced Transducers and Intelligent Control System of Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030032China

The layered two-dimensional material tungsten diselenide(WSe_(2))has triggered tremendous interests in the field of optoelectronic devices due to its exceptional carrier transport ***,the limited absorption of WSe_(2) in the near infrared(NIR)band poses a challenge for the application of WSe_(2) photodetectors in night vision,telecommunication,***,the enhanced performance of the WSe_(2) photodetector is demonstrated through the incorporation of titanium nitride nanoparticles(TiN NPs),complemented by an atomically-thick Al_(2)O_(3) layer that aids in suppressing the dark *** is demonstrated that TiN NPs can dramatically enhance the absorption of light in the proposed WSe_(2) photodetector in the NIR *** enhancement boosts photocurrent responses through the generation of plasmonic hot electrons,leading to external quantum efficiency(EQE)enhancement factors of 379.66%at 850 nm and 178.47%at 1550 *** work presents,for the first time,to our knowledge,that the WSe_(2) photodetector is capable of detecting broadband light spanning from ultraviolet to the telecommunication range,all achieved without the reliance on additional semiconductor *** achievement opens avenues for the advancement of cost-effective NIR photodetectors.

关键词： quantum titanium exceptional

来源：评论

学校读者我要写书评

暂无评论

Numerical simulations on the photoelectric performance of AlGaN-based ultraviolet VCSELs with a slope-shaped p-type layer

引用

中国光学(中英文) 2025年第3期18卷 499-509页

作者： WEN Xin-xin JIA Wei ZHAI Guang-mei DONG Hai-liang ZHAO Chao LI Tian-bao XU Bing-she Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of TechnologyTaiyuan 030024China Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering Taiyuan 030001China Institute of Atomic and Molecular Science Shaanxi University of Science and TechnologyXi’an 710021China

Owing to the low p-type doping efficiency in the hole injection layers(HILs)of GaN-based ultra-violet(UV)vertical-cavity surface-emitting laser(VCSEL),effective hole injection in multi-quantum wells(MQW)is not achieved,significantly limiting the photoelectric performance of UV *** developed a slope-shaped HIL and an EBL structure in AlGaN-based UV *** this study,by improving hole in-jection efficiency,the hole concentration in the HIL is increased,and the hole barrier at the electron barrier layer(EBL)/HIL interface is *** minimises the hindering effect of hole injection.A mathematic-al model of this structure was established using a commercial software,photonic integrated circuit simulator in three-dimension(PICS3D).We conducted simulations and theoretical analyses of the band structure and carrier *** polarisation doping through the Al composition gradient in the HIL en-hanced the hole concentration,thereby improving the hole injection ***,modifying the EBL eliminated the abrupt potential barrier for holes at the HIL/EBL interface,smoothing the valence *** improved the stimulated radiative recombination rate in the MQW,increasing the laser ***-fore,the sloped p-type layer can enhance the optoelectronic performance of UV VCSELs.

关键词： UV VCSEL AlGaN polarisation doping electron barrier layer(EBL) hole injection efficiency

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：