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Journal of Chemical Technology & Biotechnology 2020年第6期95卷

作者： Lei Yuan Xiangping Zhang Baozeng Ren Yingliang Yang Yinge Bai Lu Bai Hongshuai Gao Shaojuan Zeng College of Chemical and Engineering Zhengzhou University Zhengzhou China Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Beijing Key Laboratory of Ionic Liquids Clean Process Institute of Process Engineering Chinese Academy of Sciences Beijing China College of Chemical and Engineering University of Chinese Academy of Sciences Beijing China

The cover image is based on the Original Article Dual-Functionalized Protic Ionic Liquids for Efficient Absorption of NH3 through Synergistically Physicochemical Interaction by Shaojuan Zeng, Yingliang Yang, Lei Yuan ...

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Aqueous Synthesis of Ultrathin Platinum/Non‐Noble Metal Alloy Nanowires for Enhanced Hydrogen Evolution Activity

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Angewandte Chemie 2018年第36期130卷

作者： Zhaojun Liu Jing Qi Moxuan Liu Shumeng Zhang Qikui Fan Hongpo Liu Kai Liu Haoquan Zheng Yadong Yin Chuanbo Gao Frontier Institute of Science and Technology and State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710054 China School of Chemistry and Chemical Engineering Shaanxi Normal University Xi'an Shaanxi 710119 China Department of Chemistry University of California Riverside CA 92521 USA

Although aqueous synthesis of nanocrystals is advantageous in terms of the cost, convenience, environmental friendliness, and surface cleanness of the product, nanocrystals of Pt and non‐noble metal alloys are difficult to obtain with controlled morphology and composition from this synthesis owing to a huge gap between the reduction potentials of respective metal salts. This huge gap could now be remedied by introducing a sulfite into the aqueous synthesis, which is believed to resemble an electroless plating mechanism, giving rise to a colloid of Pt‐M (M=Ni, Co, Fe) alloy nanowires with an ultrasmall thickness (ca. 2.6 nm) in a high yield. The sulfite also leads to the formation of surface M−S bonds and thus atomic‐level Pt/M–S(OH) interfaces for greatly boosted hydrogen evolution kinetics under alkaline conditions. An activity of 75.3 mA cm −2 has been achieved with 3 μg of Pt in 1 m KOH at an overpotential of 70 mV, which is superior to previously reported catalysts.

关键词： Dimetall-Legierungen Nanodrähte Platin Wasserstoffentwicklung Wässrige Synthesen

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Inside Cover: A Simple and Mild Approach for the Synthesis ofp-Xylene from Bio-Based 2,5-Dimethyfuran by Using Metal Triflates (ChemSusChem 11/2017)

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ChemSusChem 2017年第11期10卷 2319-2319页

作者： Lingli Ni Dr. Jiayu Xin Huixian Dong Prof. Xingmei Lu Dr. Xiaomin Liu Prof. Suojiang Zhang Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 PR China Sino Danish College University of Chinese Academy of Sciences Beijing 100049 PR China

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Power-Grid Dispatching Method Considering Heat-Power Coupling Characteristics of CHP Units

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IOP Conference Series: Earth and Environmental Science 2020年第3期440卷

作者： Sensen Guan Kun Wang E Zhijun Qingbo Hu Shan Wang Jiuwen Fang Rong Chen Fei Lu Bangyu Yang Ming Liu Tianjin Electric Power Science & Research Institute Tianjin 300384 State Grid Tianjin Electric Power Company Tianjin 300010 State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 Tianjin Guodian Jinneng Binhai Co-generation co. LTD 300459.

The dispatching optimization of power grid is to obtain the greatest benefits on the basis of safe and stable operation of the power grid, which is of great significance for the energy-saving, reliability of the power grid. Therefore, a multi-objective model of power grid dispatching which considers the heat-power coupling characteristics of CHP units is developed in this study. The economic benefit and minimum wind power abandonment are taken as optimizing targets in the model. Meanwhile, the detail operation characteristics of condensing power plants and CHP units are considered in this model based on off-design models of power plant. Besides, the regional heat load and power load are scheduled together. Finally, the AHP-entropy method is used to obtain the weights of the two optimizing targets of economic benefit and wind power abandonment, and the multi-objective is converted into a single-objective.

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Corrigendum to “Efficiently trapping asphaltene-type materials from direct coal liquefaction residue using alkylsulfate-based ionic liquids” [Fuel 112 (2013) 289–294]

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Fuel 2013年 113卷 767-767页

作者： Lu Bai Yi Nie Jincheng Huang Yi Li Haifeng Dong Xiangping Zhang Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China College of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 China

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Research and application of flow visualization technique in large-scale hydraulic models

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Journal of Physics: Conference Series 2009年第1期147卷

作者： Wen Cheng Bao-wei Hu Tian Wan Zhang-bin Wang Fujio Yamamoto State Key Laboratory of Multiphase Flow in Power Engineering Key Laboratory of Northwest Water Resources and Environmental Ecology of Education Ministry ShaoXing University Shao Xing 312000 China Fiber Amenity Engineering Course Graduate School of Engineering University of Fukui Bunkyo 3-9-1 Fukui 910-8507 Japan Xian Jiao tong University Xian 710049 China Xian University of Technology Xian 710048 China

With the rapid development of computer and optical technique, as a powerful measuring method in hydrodynamics, flow visualization technique is able to get much flow field information in practical engineering. It also has an important meaning to projects and environmental areas. The image processing is the key to flow visualization for gaining flow field information. In terms of the PIV principles, the algorithm of PIV based on Fast Fourier Transformation (FFT) is studied, and the image mosaic program based on genetic algorithm has been compiled. The flow field of seabuckthorn flexible dam has been calculated and analyzed by using those methods as above-mentioned, and in the meanwhile, the application of flow visualization technique to measure the outdoor flow field has been studied exploringly, which proves that it is feasible to apply this technique to measure the large-scale outdoor flow field.

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Coexistence of Photoelectric Conversion and Storage in van der Waals Heterojunctions

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Physical Review Letters 2021年第21期127卷 217401-217401页

作者： Yucheng Jiang Anpeng He Run Zhao Yu Chen Guozhen Liu Hao Lu Jinlei Zhang Qing Zhang Zhuo Wang Chen Zhao Mingshen Long Weida Hu Lin Wang Yaping Qi Ju Gao Quanying Wu Xiaotian Ge Jiqiang Ning Andrew T. S. Wee Cheng-Wei Qiu Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application School of Physical Science and Technology Suzhou University of Science and Technology Suzhou Jiangsu 215009 People’s Republic of China Department of Electrical and Computer Engineering National University of Singapore Singapore 117583 Singapore International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University Shenzhen 518060 China State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences 500 Yu Tian Road Shanghai 200083 China School of Materials Science and Engineering Shanghai University Shanghai 200444 China Purdue Quantum Science and Engineering Institute Purdue University West Lafayette Indiana 47907 USA School for Optoelectronic Engineering Zaozhuang University Shandong 277160 China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-tech and Nano-Bionics (SINANO) Suzhou Jiangsu 215123 People’s Republic of China Department of Physics National University of Singapore Singapore 117551 Singapore

Van der Waals (vdW) heterojunctions, based on two-dimensional (2D) materials, have great potential for the development of ecofriendly and high-efficiency nanodevices, which shows valuable applications as photovoltaic cells, photodetectors, etc. However, the coexistence of photoelectric conversion and storage in a single device has not been achieved until now. Here, we demonstrate a simple strategy to construct a vdW p−n junction between a WSe2 layer and quasi-2D electron gas. After an optical illumination, the device stores the light-generated carriers for up to seven days, and then releases a very large photocurrent of 2.9 mA with bias voltage applied in darkness; this is referred to as chargeable photoconductivity (CPC), which completely differs from any previously observed photoelectric phenomenon. In normal photoconductivity, the recombination of electron-hole pairs occurs at the end of their lifetime; in contrast, infinite-lifetime photocarriers can be generated and stored in CPC devices without recombination. The photoelectric conversion and storage are completely self-excited during the charging process. The ratio between currents in full- and empty-photocarrier states below the critical temperature reaches as high as 109, with an external quantum efficiency of 93.8% during optical charging. A theoretical model developed to explain the mechanism of this effect is in good agreement with the experimental data. This work paves a path toward the high-efficiency devices for photoelectric conversion and storage.

关键词： Electrical conductivity Photoconductivity Solid-solid interfaces Two-dimensional electron gas Van der Waals systems

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In-Situ Study of Temperature- and Magnetic-Field-Induced Incomplete Martensitic Transformation in Fe-Mn-Ga

SSRN

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SSRN 2023年

作者： Sun, Xiaoming Cui, Jingyi Li, Shofu Ma, Zhiyuan Liss, Klaus-Dieter Li, Runguang Chen, Z. State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Department of Materials Science and Engineering China University of Petroleum-Beijing Beijing102249 China X-ray Science Division Argonne National Laboratory ArgonneIL60439 United States School of Mechanical Materials Mechatronic and Biomedical Engineering University of Wollongong Northfields Avenue WollongongNSW2522 Australia Australian Nuclear Science and Technology Organisation Lucas HeightsNSW2234 Australia Department of Civil and Mechanical Engineering Technical University of Denmark Kgs Lyngby2800 Denmark XI'AN Rare Metal Materials Institute Co. Ltd Xi’an710000 China

Significant interest to the stoichiometric and off-stoichiometric Fe2MnGa alloys is based on their complex phase transition behavior and potential application. In this study, temperature- and magnetic-field-induced phase transformations in the Fe41.5Mn28Ga30.5 magnetic shape memory alloy were investigated by in-situ synchrotron high-energy X-ray diffraction and in-situ neutron diffraction techniques. It is found that the incomplete phase transformation and phase coexistence behavior are always observed during fields applying and removing in Fe41.5Mn28Ga30.5. Typically, even at 4 K and under 0 T, or increasing the magnetic field to 11 T at 250 K, it is directly detected that the martensite and austenite still keep competing, making the phase transition incomplete. TEM observations at 300 K and 150 K indicate that the anti-phase boundaries and B2 precipitates may lead to the field-induced incomplete phase transformation behavior collectively. The present study may enrich the understanding of field-induced martensitic transformation in the Fe-Mn-Ga magnetic shape memory alloys. © 2023, The Authors. All rights reserved.

关键词： Magnetic fields

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Corrigendum to ‘Performance analysis of sCO 2 tube with high non-uniform heat flux: Thermal-fluid-structural evaluation and optimization’ [Volume 231, August 2023, 120849]

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Applied Thermal engineering 2023年 235卷

作者： Shuo Gao Yanjuan Wang Yi Li Qibin Liu Jinliang Xu The Beijing Key Laboratory of Multiphase Flow and Heat Transfer North China Electric Power University Beijing 102206 China Institute of Engineering Thermophysics Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 10049 China

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Effect of Ca2+ on the Microstructure, Morphology and Magnetic Properties of La-Co Substituted M-Type Strontium Ferrite at Low Fe Content

SSRN

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SSRN 2022年

作者： Li, Ziyu Sun, Yang Qin, Ciyu Liu, Ruoshui Li, Jinling Gong, Huayang Xu, Zhiyi Jing, Xiaodong School of Rare Earths University of Science and Technology of China Anhui Hefei230026 China Ganjiang Innovation Academy Chinese Academy of Sciences Jiangxi Ganzhou341119 China Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing100190 China State Key Laboratory of Multiphase Complex Systems Beijing Engineering Research Centre of Process Pollution Control Institute of Process Engineering Chinese Academy of Sciences No.1 2nd North Street ZhongGuanCun Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China

We report on the synthesis of Sr0.55-xLa0.45CaxCo0.3Fe10.9O19 by the ceramic method. Powder X-ray diffraction data of the samples show that the heterogeneous peaks in the spinel phase containing Co with Ca2+ substitution (0≤x≤0.10) gradually diminish. The lattice constants c decrease as the Ca2+ content increases. In addition, the lengths of Fe-O bonds at positions such as 2a, 2b and 4f2 in the crystal were shortened. Raman spectroscopy verified the occupancy of Co2+ in the presence of Ca2+. Magnetization measurements showed that Ms reached a maximum value of 77.85 emu/g when the Ca2+ content x=0.10. HA decreased from 32.20 kOe (x=0) to 27.60 kOe (x=0.20) and K1 obtained a maximum value of 6.50☓106 erg/cm3 at x=0.05. The results of the research on these samples are useful for low Fe content ions in place of M-type strontium ferrite is of great significance. © 2022, The Authors. All rights reserved.

关键词： Magnetic properties

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