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Articles by Hehe Wei
Electrocatalytic Stability over Ruthenium‐Based Catalysts for Proton Exchange Membrane Water Electrolysis
Achieving large-scale, low-cost hydrogen production through proton exchange membrane water electrolysis (PEMWE) is a key strategic direction in the energy revolution. However, the high potential of oxygen evolution reaction (OER) and acidic environment seriously limit hydrogen production efficiency. RuO2-based catalysts have garnered significant attention due to their unique electronic structure and exceptional activity in the OER.
The Role of Point Defects in Heterojunction Photocatalysts: Perspectives and Outlooks
1 Introduction Photocatalysis is a technology of harnessing inexhaustible solar energy, and converting it into chemical energy through the interaction between solar energy and photocatalysts.[1] It has the advantages of cost-effectiveness, environmental friendliness, mild reaction conditions, and no secondary pollution.[2] Moreover, photocatalysis has a very wide field of applications that includes environmental purification,[3] industrial raw material synthesis,[4] H2 production,[5] CO2...
Amorphous ultrathin iridium/carbon catalyst realizing efficient electrochemical hydrogen evolution
Amorphous ultrathin iridium/carbon catalyst realizing efficient electrochemical hydrogen evolution Amorphous 1.1-nm Ir/C catalyst exhibites ultralow overpotential of 10 and 64 mV for hydrogen evolution reaction at the current density of 10 and 100 mA cm-2, together with 117-A mg-1 mass activity and outstanding long-term durability, and superior to commercial Pt/C catalyst. It demonstrate insight and great potential for practical applications in amorphous materials and water splitting.
Direct Immobilized Atomically Dispersed Pt Catalyst by Suppressing Heterogeneous Nucleation at -40 ℃
Direct Immobilized Atomically Dispersed Pt Catalyst by Suppressing Heterogeneous Nucleation at -40 ℃ Kai Huang, Ruyue Wang, Hongbo Wu, Hao Wang, Xian He, Hehe Wei, ShanPeng Wang, Ru Zhang, Ming Lei, Wei Guo, Binghui Ge and Hui Wu Abstract Direct deposition of isolated metal atoms onto substrates have been recognized as a simple route to obtain high performance supported atomically dispersed metals (SACs), however, the agglomeration driven by high surface energy is difficult to be avoided.
Ice as Solid Electrolyte to Conduct Various Kinds of Ions - Wu - - Angewandte Chemie International Edition - Wiley Online Library
Communication Ice as Solid Electrolyte to Conduct Various Kinds of Ions Hui Wu Corresponding Author E-mail address: huiwu@tsinghua.edu.cn School of Materials Science and Energineering, School of Materials Science and Energineering, School of Materials Science and Enegineering, Tsinghua University, 100084 Beijing, CHINA Search for more papers by this author Zeliang Guo State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing...
−60 °C solution synthesis of atomically dispersed cobalt electrocatalyst with superior performance
Abstract Temperature can govern morphologies, structures and properties of products from synthesis in solution. A reaction in solution at low temperature may result in different materials than at higher temperature due to thermodynamics and kinetics of nuclei formation. Here, we report a low-temperature solution synthesis of atomically dispersed cobalt in a catalyst with superior performance.
Ultralow-temperature photochemical synthesis of atomically dispersed Pt catalysts for hydrogen evolution reaction
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Inside Back Cover: Ice Melting to Release Reactants in Solution Syntheses (Angew. Chem. Int. Ed. 13/2018)
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Ice Melting to Release Reactants in Solution Syntheses
Aqueous solution syntheses are mostly based on mixing two solutions with different reactants. It is shown that freezing one solution and melting it in another solution provides a new interesting strategy to mix chemicals and to significantly change the reaction kinetics and thermodynamics. For example, a precursor solution containing a certain concentration of AgNO was frozen and dropped into a reductive NaBH solution at about 0 °C. The ultra‐slow release of reactants was successfully achieved.
Ice Melting to Release Reactants in Solution Syntheses
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AbstractLike icebergs slowly melting in the ocean, chemicals can be released to a solution reaction from a piece of ice, as described by B. Ge, L.-M. Liu, H. Wu et?al. in their Communication (DOI: 10.1002/anie.201711128). By this simple ice-melting process, nuclei formation and growth can be successfully suppressed.
By Hehe Wei, Kai Huang, Binghui Ge, Jialiang Lang, Jingyuan Ma, Shuai Zhang, Qunyang Li, Ruoyu ZHANG, Naveed Hussain Verified, Ming Lei, Li-Min Liu, Hui Wu
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Color Research & Application
Verified
Ice Melting to Release Reactants in Solution Syntheses
Aqueous solution syntheses have been investigated and widely applied, and these reactions are mostly based on mixing two solutions with different reactants. Here, we report that freezing one solution and melting it in the other solution provides a new interesting strategy to mix chemicals and to significantly change the reaction kinetics and thermodynamics, e.g. a precursor solution containing a certain concentration of AgNO3 was frozen and dropped into a reductive NaBH4 solution at ~ 0°C.
Ultra-low-temperature growth of CdS quantum dots on g-C3N4 nanosheets and their photocatalytic performance
R. Zhang, K. Huang, H. Wei, D. Wang, G. Ou, N. Hussain, Z. Huang, C. Zhang and H. Wu, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C7DT04355D If you are not the author of this article and you wish to reproduce material from it in a third party non-RSC publication you must formally request permission using RightsLink. Go to our Instructions for using RightsLink page for details.
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