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基础电化学近期研究专辑(武汉大学 陈胜利教授主编)

电化学催化的密度泛函研究

  • 李莉 ,
  • 魏子栋
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  • 重庆大学化学化工学院,重庆 400044

收稿日期: 2013-12-13

  修回日期: 2014-01-17

  网络出版日期: 2014-01-25

基金资助

国家自然科学基金项目(No. 21176271,No. 21276291)资助

Electrochemical Catalysis: A DFT Study

  • LI Li ,
  • WEI Zi-Dong
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  • School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China

Received date: 2013-12-13

  Revised date: 2014-01-17

  Online published: 2014-01-25

摘要

围绕电化学催化问题,综述了密度泛函理论研究电极电势、电催化剂结构与物种的吸附脱附、电子转移以及电催化剂活性、稳定性的关系. 电极电势与金属催化剂d带中心影响着电极表面物种的形成、吸附和脱附,通过催化剂合金化或表面修饰、载体-催化剂相互作用可实现催化剂d带中心的调控,寻找最优吸附强度的催化剂,以期提高催化活性;通过电极电势与催化剂的HOMO能级的调控,实现与电子受体物质LUMO能级的匹配,达到促进或抑制催化剂与电子受体物质之间电子转移的快慢.

本文引用格式

李莉 , 魏子栋 . 电化学催化的密度泛函研究[J]. 电化学, 2014 , 20(4) : 307 -315 . DOI: 10.13208/j.electrochem.130893

Abstract

In this review, we focus on achievements in electro-catalysis based on the density function theory study. The relationships among the electrode potential, electronic structure of catalysts and electro-catalytic activity are summarized in three parts: the adsorption and desorption of species, electron transfer, and stability of catalysts. The electrode potential and the electronic structure (d-band center or Fermi (HOMO) energy) of catalysts significantly influence the formation, adsorption and desorption of surface species on electrode. The electro-catalytic activity can be improved by modulating the electrode potential and electronic structure of catalysts.

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