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Inducing a Synergistic Effect on Ptδ+/Electron-Rich Sites via a Platinization Strategy: Generating Hyper-High Current Density in Hydrogen Evolution Reaction.
Wang, Shanshan; Zhao, Qin; Ma, Quanlei; Gan, Rong; Ran, Yiling; Fang, Weizhen; Wang, Cuijuan; Fang, Ling; Feng, Qingguo; Zhang, Yan; Wang, Dingsheng; Li, Yadong.
Afiliación
  • Wang S; School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China.
  • Zhao Q; School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China.
  • Ma Q; School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China.
  • Gan R; School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China.
  • Ran Y; School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China.
  • Fang W; Analytical and Testing Center of Southwest Jiaotong University, Chengdu 610031, China.
  • Wang C; School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China.
  • Fang L; Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China.
  • Feng Q; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.
  • Zhang Y; School of Chemistry, Southwest Jiaotong University, Chengdu 610031, China.
  • Wang D; Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China.
  • Li Y; Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China.
Nano Lett ; 24(36): 11286-11294, 2024 Sep 11.
Article en En | MEDLINE | ID: mdl-39213593
ABSTRACT
Herein, we propose a platinization strategy for the preparation of Pt/X catalysts with low Pt content on substrates possessing electron-rich sites (Pt/X X = Co3O4, NiO, CeO2, Covalent Organic Framework (COF), etc.). In examples with inorganic and organic substrates, respectively, Pt/Co3O4 possesses remarkable catalytic ability toward HER, achieving a current density at an overpotential of 500 mV that is 3.22 times higher than that of commercial Pt/C. It was also confirmed by using operando Raman spectroscopy that the enhancement of catalytic activity was achieved after platinization of the COF, with a reduction of overpotential from 231 to 23 mV at 10 mA cm-2. Density functional theory (DFT) reveals that the improved catalytic activity of Pt/Co3O4 and Pt/COF originated from the re-modulation of Ptδ+ on the electronic structure and the synergistic effect of the interfacial Ptδ+/electron-rich sites. This work provides a rapid synthesis strategy for the synthesis of low-content Pt catalysts for electrocatalytic hydrogen production.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nano Lett Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos