电子科技 ›› 2022, Vol. 35 ›› Issue (11): 90-97.doi: 10.16180/j.cnki.issn1007-7820.2022.11.013

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单原子催化剂电催化氧还原产过氧化氢研究进展

金韬1,胡霞1,2,3,喻兰兰1,赵文军1,杨麒1,托娅4   

  1. 1.贵州大学 资源与环境工程学院,贵州 贵阳 550025
    2.喀斯特地质资源与环境教育部重点实验室,贵州 贵阳 550025
    3.贵州喀斯特环境生态系统教育部野外科学观测研究站,贵州 贵阳 550025
    4.生态环境部 环境发展中心科技成果转化与产业促进中心,北京 100029
  • 收稿日期:2021-05-07 出版日期:2022-11-15 发布日期:2022-11-11
  • 作者简介:金韬(1996-),男,硕士研究生。研究方向:电芬顿降解双酚类有机物。|胡霞(1986-),女,博士,副教授。研究方向:微生物燃料电池、功能生物炭强化生物反应池。
  • 基金资助:
    国家自然科学基金(31700115)

Progress in Electrocatalysis Oxygen Reduction for Hydrogen Peroxide Production over Single-Atom Catalysts

JIN Tao1,HU Xia1,2,3,YU Lanlan1,ZHAO Wenjun1,YANG Qi1,TUO Ya4   

  1. 1. College of Resource and Environmental Engineering, Guizhou University,Guiyang 550025,China
    2. Key Laboratory of Karst Geologica Resources and Environment, Ministry of Education,Guiyang 550025,China
    3. Guizhou Karst Environmental Ecosystems Observation and Research Station of Ministry of Education,Guiyang 550025,China
    4. Center for Scientific and Technological Achievements Transformation and Industrial Promotion, Center for Environmental Development, Ministry of Ecology and Environment,Beijing 100029,China
  • Received:2021-05-07 Online:2022-11-15 Published:2022-11-11
  • Supported by:
    National Natural Science Foundation of China(31700115)

摘要:

通过电催化两电子氧还原反应生产过氧化氢是替代传统集中式蒽醌工艺的一种有效方法,但这种工艺依赖一种低成本、高活性和高选择性的催化剂。近年来,单原子催化剂由于其近100%的原子利用效率、可调控的电子结构和优异的催化性能,被认为是一种潜在的氧还原产过氧化氢催化剂。然而,对单原子催化剂活性的调控仍然是一个挑战。文中从氧还原反应的机理出发,阐明了活性金属中心与*OOH的结合强度对氧还原反应途径的影响,并从金属中心原子、配位原子和活性中心周围环境等3个方面来系统性地说明调控单原子催化剂的结构对金属中心与*OOH结合的影响,揭示了产过氧化氢的活性和选择性来源。

关键词: 电催化, 氧还原反应, 过氧化氢, 活性, 选择性, 单原子催化剂, *OOH中间体, 结构调控

Abstract:

Hydrogen peroxide production via electrocatalytic two-electron oxygen reduction is an effective alternative to traditional centralized anthraquinone processes. However, this process depends on a catalyst with low cost, high activity and high selectivity. In recent years, SACs have been considered as potential catalysts for oxygen reduction and hydrogen peroxide production due to their nearly 100% atom utilization efficiency, tunable electronic structure, and excellent catalytic performance, but the regulation of SAC activity remains a challenge. Starting from the mechanism of the ORR, the influence of the binding strength of the active metal center and *OOH on the oxygen reduction reaction pathway is elucidated. This study systematically illustrates the effect of adjusting the structure of the SAC on the binding of the metal center to *OOH from three aspects: metal center atom, coordination atom and the surrounding environment of the active center, and reveals the activity and selectivity of H2O2 production.

Key words: electrocatalysis, oxygen reduction reaction, hydrogen peroxide, activity, selectivity, single-atom catalyst, *OOH intermediate, structure regulation

中图分类号: 

  • TN948.64