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1D carbon [email protected] 2 core-shell nanocomposites with enhanced photocatalytic activity toward CO 2 reduction

Journal of Alloys and Compounds 2018年 746卷 168-176页

作者： Jinfeng Zhang Junwei Fu Shifu Chen Jiali Lv Kai Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan Hubei 430070 PR China College of Physics and Electronic Information Huaibei Normal University Huaibei Anhui 235000 PR China College of Chemistry and Material Science Huaibei Normal University Huaibei Anhui 235000 PR China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 PR China

More and more serious energy crisis and greenhouse effect force people to find the appropriate solutions. Photocatalytic reduction of CO 2 into hydrocarbon fuels is one of the most potential strategies. In this paper, novel one-dimensional (1D) carbon [email protected] 2 core-shell nanocomposites have been prepared via electrospun synthesis of carbon nanofibers core followed by in situ growth of TiO 2 shell, which exhibit a 2.3-fold higher photocatalytic activity than the pure TiO 2 . The increase of catalytic performance attributed to higher specific surface areas of carbon [email protected] 2 core-shell nanocomposites for providing more surface-active sites. Moreover, the black carbon nanofibers promote light absorption, and the light energy can be converted into heat energy that can speed up the diffusion of reactants and products. Most importantly, the carbon nanofibers with good electrical conductivity can speed up the separation of the photo-induced electron and hole pairs in photocatalyst. This work provides a good synthesis of 1D core-shell heterostructure, and proves that the carbon nanofibers can be an ideal cocatalyst for enhancing photocatalytic CO 2 reduction performance of TiO 2 .

关键词： Composite materials Chemical synthesis X-ray diffraction CO 2 Photocatalytic reduction

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Lithium/Sodium-Ion Batteries: In Situ, Atomic-Resolution Observation of Lithiation and Sodiation of WS2Nanoflakes: Implications for Lithium-Ion and Sodium-Ion Batteries (Small 24/2021)

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Small 2021年第24期17卷

作者： Yaobin Xu Ke Wang Zhenpeng Yao Joohoon Kang David Lam Dan Yang Wei Ai Chris Wolverton Mark C. Hersam Ying Huang Wei Huang Vinayak P. Dravid Jinsong Wu Department of Materials Science and Engineering Northwestern University Evanston IL 60208 USA NUANCE Center Northwestern University Evanston IL 60208 USA Frontiers Science Center for Flexible Electronics (FSCFE) Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) 127 West Youyi Road Xi'an 710072 China Department of Chemistry and Chemical Biology Harvard University 12 Oxford Street Cambridge MA 02138 USA Department of Chemistry and Computer Science University of Toronto Toronto Ontario Canada School of Advanced Materials Science and Engineering Sungkyunkwan University (SKKU) Suwon 16419 Republic of Korea MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary Conditions School of Chemistry and Chemical Engineering Northwestern Polytechnical University Xi'an 710072 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Nanostructure Research Centre Wuhan University of Technology 122 Luoshi Road Wuhan Hubei 430070 China

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Preface to Special Issue on the International Symposium on Environmental Catalysis(ISEC 2016)

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Chinese Journal of Catalysis 2017年第2期38卷 191-191页

作者：李金林余家国 Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission and Ministry of Education South-Central University for Nationalities State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology

With a growing awareness of pollution and increasing demands for environmental protection, a great deal of effort is being put into the development of catalysts with improved activity for the abatement of pollutants, ... 详细信息

关键词： awareness emitted thank helping symposium speakers invitation acceptance reviewers editorial

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Fast Welding of Chromium Carbide and Nickel Alloy by Spark Plasma Sintering

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Journal of Wuhan University of technology(materials Science) 2016年第4期31卷 835-837页

作者：刘国玺 LI Kezhi LENG Xiaoxuan 张金咏 ZHANG Fan School of Materials Science Northwestern Polytechinical University Xi'an 710072 China Ningbo Branch of Ordnance Science Institute of China Yantai 264003 China China State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

Spark plasma sintering（SPS） was used to weld the ceramics,eg,Cr3C2 and metal,Ni in this *** is found that the SPS can weld the Cr3C2 and Ni plates at lower temperatures and shorter holding time comparing with that of hot-pressing（HP）.The binding strength was 113 MPa when the temperature was 1000 ℃ by SPS,compared with 10 MPa by HP at the same *** remarkably enhances the atom diffusion in *** analysis at different welding temperatures and holding times of SPS or HP shows that the local temperature gradient,different from the past effects of by-passing current,is the dominative mechanism of the SPS welding.

关键词： Sintering welding Welding holding ceramics sintering welded pressing remarkably heating

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Study on mullite whiskers preparation via non-hydrolytic sol-gel process combined with molten salt method

Study on mullite whiskers preparation via non-hydrolytic sol...

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Chinese materials Congress on Functional and Functionally Structured materials, CMC 2015

作者： Fu, Kai Lin Jiang, Wei Hui Liu, Jian Min Feng, Guo Pan, Mu School of Material Science and Engineering Jingdezhen Ceramic Institute Jingdezhen333001 China Jiangxi Key Laboratory of Advanced Ceramic Materials Jingdezhen333001 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China

ISBN: (纸本)9783038357605

Mullite whiskers were prepared via non-hydrolytic sol-gel process combined with molybdate molten salt using tetraethoxysilane and anhydrous aluminum chloride as precussor, anhydrous ether as oxygen donor, molybdate as molten salt. The effects of heat treatment temperature, molten salt amount, holding time on synthesis and morphology of mullite whiskers were investigated by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The results show that the mullite whiskers appeared at the lowest temperature of 800℃, and optimized mullite whiskers could be prepared at 900℃ for 8 h with the mass ratio of xerogel and molybdate as 1:2, the diameter of the whiskers was in the range of 0.15-0.22 μm with the aspect ratio of more than 40. © 2016 Trans Tech Publications, Switzerland.

关键词： Aluminum chloride

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Phosphorene Co‐catalyst Advancing Highly Efficient Visible‐Light Photocatalytic Hydrogen Production

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Angewandte Chemie 2017年第35期129卷

作者： Jingrun Ran Bicheng Zhu Shi‐Zhang Qiao School of Chemical Engineering University of Adelaide Adelaide SA 5005 Australia State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology 122 Luoshi Road Wuhan 430070 P.R. China

Transitional metals are widely used as co‐catalysts boosting photocatalytic H 2 production. However, metal‐based co‐catalysts suffer from high cost, limited abundance and detrimental environment impact. To date, metal‐free co‐catalyst is rarely reported. Here we for the first time utilized density functional calculations to guide the application of phosphorene as a high‐efficiency metal‐free co‐catalyst for CdS, Zn 0.8 Cd 0.2 S or ZnS. Particularly, phosphorene modified CdS shows a high apparent quantum yield of 34.7 % at 420 nm. This outstanding activity arises from the strong electronic coupling between phosphorene and CdS, as well as the favorable band structure, high charge mobility and massive active sites of phosphorene, supported by computations and advanced characterizations, for example, synchrotron‐based X‐ray absorption near edge spectroscopy. This work brings new opportunities to prepare highly‐active, cheap and green photocatalysts.

关键词： Cokatalystoren Dichtefunktionalrechnungen Phosphoren Photokatalyse Wasserstofferzeugung

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Preface to Special Issue on Photocatalysis for celebrating the 20^(th) anniversary of Professor Jimmy C. Yu's return to Hong Kong and leading photocatalytic research there

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Chinese Journal of Catalysis 2015年第12期36卷 2047-2048页

作者：余家国林隽 State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Department of Chemistry Renmin University of China

It is a pleasure to dedicate this special issue of Chinese Journal of Catalysis（CJC）to *** ***,Choh-Ming Li Professor of Chemistry at The Chinese University of Hong *** is to celebrate the 20th anniversary of his re... 详细信息

关键词： pleasure Jimmy return photocatalytic celebrate distinguished helping anniversary strive

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Multimodal Zeolite Catalysts with Hierarchically Micro-Meso-Macroporous Structure

Multimodal Zeolite Catalysts with Hierarchically Micro-Meso-...

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中国化学会第九届全国无机化学学术会议

作者： Li-Hua Chen Ming-Hui Sun Bao-Lian Su State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology

Crystalline microporous zeolites are one of the most useful catalysts in industrial processes such as oil refining and organic synthesis owing to their strong catalytic performance, high thermal and hydrothermal stabilities, and well-defined micropores with excellent shape-selectivity in catalysis. However, one disadvantage of these zeolitic catalysts is that their pores are too small to be accessed by bulky reactants, thus hindering their use in the fine chemical and petroleum processing industries. To overcome such drawbacks, we have synthesized hierarchically ordered micro-meso-macroporous solid-acid catalysts via a chemically crystallization process in an improved hydrothermal system. Zeolites, including Silicalite-1, ZSM-5, Beta and TS-1, with hierarchically ordered micro-meso-macroporous structure have been synthesized. It is expected that these hierarchical zeolite materials will exhibit superior catalytic performance owing to the improved mass-transfer properties.

关键词： zeolites hierarchical porous catalyst ordered macro-meso-micro

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Effect of Topology Structure on the Output Performance of an Automobile Exhaust Thermoelectric Generator

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IOP Conference Series: materials Science and Engineering 2017年第1期199卷

作者： W Fang S H Quan C J Xie B Ran X L Li L Wang Y T Jiao T W Xu Hubei Key Laboratory of Advanced Technology for Automotive Components Automobile Engineering Institute Wuhan University of Technology 205 Luoshi Road Hongshan District Wuhan 430070 China. School of Automation Wuhan University of Technology Wuhan 430070 China Corresponding author. Tel.: +86 027 87859589 Department of Civil & Environment Engineering University of Wisconsin Madison USA State Key Laboratory of Advanced Technology for Material Synthesis and Processing Wuhan University of Technology Wuhan China Fax: +86 027 87859589.

The majority of the thermal energy released in an automotive internal combustion cycle is exhausted as waste heat through the tail pipe. This paper describes an automobile exhaust thermoelectric generator (AETEG), designed to recycle automobile waste heat. A model of the output characteristics of each thermoelectric device was established by testing their open circuit voltage and internal resistance, and combining the output characteristics. To better describe the relationship, the physical model was transformed into a topological model. The connection matrix was used to describe the relationship between any two thermoelectric devices in the topological structure. Different topological structures produced different power outputs; their output power was maximised by using an iterative algorithm to optimize the series-parallel electrical topology structure. The experimental results have shown that the output power of the optimal topology structure increases by 18.18% and 29.35% versus that of a pure in-series or parallel topology, respectively, and by 10.08% versus a manually defined structure (based on user experience). The thermoelectric conversion device increased energy efficiency by 40% when compared with a traditional car.

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Electroluminescence of Au/semi-insulating GaAs/Au hybrid structures under magnetic field

Electroluminescence of Au/semi-insulating GaAs/Au hybrid str...

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第十六届全国磁学和磁性材料会议暨第十七届全国微波磁学会议

作者： Z.G.Sun State Key Laboratory of Advanced Technology on Material Synthesis & Processing Wuhan University of TechnologyWuhan430070

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