高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (9): 20220312.doi: 10.7503/cjcu20220312

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单原子与团簇光催化: 竞争与协同

林治, 彭志明, 贺韦清, 沈少华()   

  1. 西安交通大学动力工程多相流国家重点实验室, 国际可再生能源研究中心, 西安 710049
  • 收稿日期:2022-05-08 出版日期:2022-09-10 发布日期:2022-06-24
  • 通讯作者: 沈少华 E-mail:[email protected]
  • 基金资助:
    国家重点研发计划项目(2018YFB1502003);国家自然科学基金(21875183);陕西省自然科学基础研究计划项目(2019JCW-10)

Single-atom and Cluster Photocatalysis: Competition and Cooperation

LIN Zhi, PENG Zhiming, HE Weiqing, SHEN Shaohua()   

  1. International Research Center for Renewable Energy,State Key Laboratory of Multiphase Flow in Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China
  • Received:2022-05-08 Online:2022-09-10 Published:2022-06-24
  • Contact: SHEN Shaohua E-mail:[email protected]
  • Supported by:
    the National Key Research and Development Program of China(2018YFB1502003);the National Natural Science Foundation of China(21875183);the Natural Science Basic Research Program of Shaanxi Province, China(2019JCW-10)

摘要:

光催化技术被认为是将太阳能转化为可存储化学能的有效策略. 通过在半导体光催化剂上负载高度分散的金属活性位点(如单原子、 团簇等), 能够显著促进光催化过程中物质和电荷的转移, 提高光催化反应的效率. 光催化过程中真正的活性位点是单原子还是团簇仍存在较大争议. 本文概述了单原子光催化的最新研究进展, 在此基础上对单原子和团簇作为活性位点的竞争与协同作用进行了分析与讨论, 并探论了用于鉴别单原子和团簇光催化活性位点的可靠方法. 最后, 对单原子与团簇协同的光催化在水分解和CO2还原等太阳能-化学能转化领域的未来发展进行了展望.

关键词: 单原子催化剂, 团簇, 光催化

Abstract:

Photocatalytic technology has been considered as a promising and sustainable technology to convert solar energy to storable chemical energy. With active sites(single metal atoms and clusters) atomically dispersed on the semiconductor, the mass and charge transfer in photocatalysis can be significantly promoted, and the photocatalytic performance can be remarkably improved. However, it is still controversial whether clusters or single-atoms are the real active sites in catalysts. In this review, the recent advances in single-atom photocatalysis are briefly introduced, with the competition and synergy of single-atoms and clusters analyzed and discussed. Then, the state-of-the-art technologies in the identification and characterization of single-atoms and clusters as photocatalytic active sites are presented. Finally, the future development of single-atoms/clusters synergistic photocatalysis in solar-chemical energy conversions such as water splitting and CO2 reduction is prospected.

Key words: Single-atom catalyst, Cluster, Photocatalysis

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