检索结果-内蒙古大学图书馆

SSRN 2022年

作者： Deng, Nan Qu, Dandan Zhang, Kun Liu, Guoliang Li, Shaofu Zhou, Zhangjian School of Materials Science and Engineering Xi’an University of Technology Xi’an710048 China School of Materials Science and Engineering University of Science and Technology Beijing Beijing100083 China Wide Range Flight Engineering Science and Application Center Institute of Mechanics Chinese Academy of Sciences Beijing100190 China School of Engineering Science University of Chinese Academy of Sciences Beijing100049 China State key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy Science Beijing100190 China

This study successfully fabricated a W-Cu composite coating with high W retention by cold spray using a novel core-shell powder. Finite element simulation was used to investigate the impact and deposition mechanics during cold spraying of core-shell compared to traditional satellite powder. The results showed that the core-shell powder exhibits non-local strain and dispersed residual stress in the final coating, enabling the successful preparation of the cold-sprayed W-Cu composite coating with high W content, and the final coating displays a non-pancake-like layer morphology. The final coating showed super-high W retention (98.3%) and reduced bulk porosity (1%) after optimized core-shell powder by adding a transition layer of Ni and appropriate heat treatment. © 2022, The Authors. All rights reserved.

关键词： Composite coatings

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Preface

引用

Catalysis Today 2013年第1期200卷 1-1页

作者： Zhang, Suojiang Ng, Flora T.T. Rogers, Robin D. State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences China Department of Chemical Engineering University of Waterloo Canada Center for Green Manufacturing and Department of Chemistry University of Alabama United States

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Direct numerical simulation of Taylor-Couette flow with vertical asymmetric rough walls

arXiv

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arXiv 2023年

作者： Xu, Fan Su, Jinghong Lan, Bin Zhao, Peng He, Yurong Sun, Chao Wang, Junwu School of Energy Science and Engineering Harbin Institute of Technology Harbin150001 China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences P. O. Box 353 Beijing100190 China School of Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing100190 China Center for Combustion Energy Key Laboratory for Thermal Science and Power Engineering Ministry of Education Department of Energy and Power Engineering Tsinghua University Beijing100084 China Department of Engineering Mechanics School of Aerospace Engineering Tsinghua University Beijing100084 China

Direct numerical simulations are performed to explore the effects of the rotating direction of the vertically asymmetric rough wall on the transport properties of Taylor-Couette (TC) flow, up to a Taylor number of Ta = 2.39×107. It is shown that, compared to the smooth wall, the rough wall with vertical asymmetric strips can enhance the dimensionless torque Nuω. More importantly, at high Ta, clockwise rotation of the inner rough wall (where the fluid is sheared by the steeper slope side of the strips) results in a significantly greater torque enhancement compared to counter-clockwise rotation (where the fluid is sheared by the smaller slope side of the strips), due to the larger convective contribution to the angular velocity flux. However, the rotating direction has a negligible effect on the torque at low Ta. The larger torque enhancement caused by the clockwise rotation of the vertically asymmetric rough wall at high Ta is then explained by the stronger coupling between the rough wall and the bulk, attributed to the larger biased azimuthal velocity toward the rough wall at the mid-gap of the TC system, the increased turbulence intensity manifested by larger Reynolds stress and a thinner boundary layer, and the more significant contribution of the pressure force on the surface of the rough wall to the torque. Copyright © 2023, The Authors. All rights reserved.

关键词： Direct numerical simulation

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Heterostructures by Templated Synthesis of Layered Double Hydroxide to Modulate the Electronic Structure of Nickel Sites for a Highly Efficient Oxygen Evolution Reaction

SSRN

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SSRN 2023年

作者： Xu, Kexin Zhong, Haihong Song, Jie Estudillo-Wong, Luis Alberto Yang, Jun Feng, Yongjun Zhao, Xiaojuan Alonso-Vante, Nicolas State Key Laboratory of Chemical Resource Engineering Beijing Engineering Center for Hierarchical Catalysts College of Chemistry Beijing University of Chemical Technology No. 15 Beisanhuan East Road Beijing100029 China School of Chemistry and Chemical Engineering Hainan University No. 58 Renmin Road Haikou570228 China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Institute of High Energy Physics Chinese Academy of Science Beijing100190 China Departamento de Biocienciase Ingeniería CIIEMAD-IPN Instituto Politécnico Nacional Ciudad de México07340 Mexico IC2MP UMR-CNRS 7285 University of Poitiers PoitiersF-86022 Cedex France

The design and development highly efficient electrocatalysts for oxygen evolution reaction (OER) are critical for renewable energy generation. Ni-based electrocatalysts are widely used in the water electrolysis process. In this work, heterostructure consisting of selenides and layered double hydroxides (LDH) named (Co, Ni)Se4@NiFe-LDH, are prepared by an LDH-based strategy, in which the electronic structure of Ni active sites is regulated by interfacial electron interaction. The (Co, Ni)Se4@NiFe-LDH shows an optimized charge distribution of Ni sites and excellent catalytic activity. The effective charge modulation results in lowering the energy barrier of OOH* intermediate formation and adequate adsorption strength of the intermediates on Ni active sites, which improves the kinetics of OER. Specifically, the (Co, Ni)Se4@NiFe-LDH only requires an overpotential of 237 mV to reach the current density of 10 mA cm-2 under alkaline conditions. The results of this work demonstrate that reasonable engineering of heterostructure is an effective strategy to improve the intrinsic property of OER electrocatalysts for water splitting. © 2023, The Authors. All rights reserved.

关键词： Electrocatalysts

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Correction to: Research on Performance and Safety of Composite Inorganic Phase-Change Materials (NaNO3/SiO2/C) under Low-temperature Cold Shock

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Journal of Materials Engineering and Performance 2021年第11期30卷 8686-8686页

作者： Liu, Liang Wu, Aixiang Huang, Yun Li, Junqin Beijing Academy of Safety Science and Technology Beijing China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China Anhui Emergency Management Publicity and Education Center Hefei China Gansu Vocational and Technical College of Communications Lanzhou China

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Computational chemistry-assisted design of hydrazine-based fluorescent molecular rotor for viscosity sensors

Smart Molecules

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Smart Molecules 2023年第3期1卷 89-97页

作者： Miao Dong Dazhuang Wang Jinrong Yang Pingping Sun Weilu Ding Jianxin Yang Jinwu Yan Weijie Chi Collaborative Innovation Center of One Health Key Laboratory of Green Catalysis and Reaction Engineering of HaikouSchool of Chemistry and Chemical EngineeringHainan UniversityHaikouChina MOE International Joint Research Laboratory on Synthetic Biology and Medicines School of Biology and Biological EngineeringSouth China University of TechnologyGuangzhouChina Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijingChina

Deep understanding of the fluorescence quenching mechanisms of probes plays a crucial role in developing their practical *** fluorescence quenching mechanism of hydrazine-based fluorescence probes needs to be clarified up to the ***,we designed and synthesized a new hydrazine-based fluorescence probe(HA-Na)based on the naphthalimide *** clarified the molecular origin of the non-fluorescence of this probe with the aid of computational chemistry and spectroscopic *** showed that the significant rotation of the hydrazine group in the excited state potential energy surface,which caused the complete charge separation,was responsible for the fluorescence quenching of the probe in an organic *** the rotation was prevented in an aggregative state or high-viscosity solution,the fluorescence of the probe *** other words,the fluorescence quenching mechanism of hydrazine-based fluorescence probes was attributed to the formation of a twisted intramolecular charge transfer(TICT)*** importantly,we demonstrated that this fluorescence molecular rotor could be used to monitor the autophagy process in living cells by detecting lysosomal viscosity changes during ***,this work provides an essential theoretical basis for the developing potential hydrazine-based fluorescence molecular rotors.

关键词： computational chemistry fluorescence probes fluorescence quenching mechanisms twisted intramolecular charge transfer

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Correction: Efficient transformation of CO2 to cyclic carbonates using bifunctional protic ionic liquids under mild conditions

引用

Green Chemistry 2021年第22期23卷 9179-9179页

作者： Xianglei Meng Zhaoyang Ju Suojiang Zhang Xiaodong Liang Nicolas von Solms Xiaochun Zhang Xiangping Zhang Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 People's Republic of China Department of Chemical and Biochemical Engineering Center for Energy Resources Engineering (CERE) Technical University of Denmark Kgs. Lyngby Denmark School of Chemical Engineering University of Chinese Academy of Sciences Beijing 100049 China

Correction for ‘Efficient transformation of CO2 to cyclic carbonates using bifunctional protic ionic liquids under mild conditions’ by Xianglei Meng et al., Green Chem., 2019, 21, 3456–3463, DOI: 10.1039/C9GC01165J.

Correction for ‘Efficient transformation of CO₂ to cyclic carbonates using bifunctional protic ionic liquids under mild conditions’ by Xianglei Meng et al., Green Chem., 2019, 21, 3456–3463, DOI: 10.1039/C9GC01165J.

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Coagulation of Chitin and Cellulose from 1‐Ethyl‐3‐methylimidazolium Acetate Ionic‐Liquid Solutions Using Carbon Dioxide†

引用

Angewandte Chemie 2013年第47期125卷

作者： Patrick S. Barber Chris S. Griggs Gabriela Gurau Zhen Liu Shan Li Zengxi Li Xingmei Lu Suojiang Zhang Robin D. Rogers Center for Green Manufacturing and Department of Chemistry The University of Alabama Tuscaloosa AL 35487 (USA) U.S. Army ERDC Environmental Laboratory Vicksburg MS 39180 (USA) College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 (China) State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Graduate University of Chinese Academy of Sciences Beijing 100190 (China)

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Innenrücktitelbild: Nucleation and Growth of Amino Acid and Peptide Supramolecular Polymers through Liquid–Liquid Phase Separation (Angew. Chem. 50/2019)

引用

Angewandte Chemie 2019年第50期131卷

作者： Chengqian Yuan Aviad Levin Wei Chen Ruirui Xing Qianli Zou Therese W. Herling Pavan Kumar Challa Tuomas P. J. Knowles Xuehai Yan State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Cavendish Laboratory University of Cambridge CB3 0FE Cambridge UK Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China

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Inside Back Cover: Nucleation and Growth of Amino Acid and Peptide Supramolecular Polymers through Liquid–Liquid Phase Separation (Angew. Chem. Int. Ed. 50/2019)

引用

Angewandte Chemie International Edition 2019年第50期58卷

作者： Dr. Chengqian Yuan Dr. Aviad Levin Dr. Wei Chen Dr. Ruirui Xing Dr. Qianli Zou Dr. Therese W. Herling Dr. Pavan Kumar Challa Prof. Tuomas P. J. Knowles Prof. Xuehai Yan State Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Department of Chemistry University of Cambridge Lensfield Road Cambridge CB2 1EW UK State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Cavendish Laboratory University of Cambridge CB3 0FE Cambridge UK Center for Mesoscience Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China

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