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化学进展 2022, Vol. 34 Issue (11): 2329-2330 DOI: 10.7536/PC221125   后一篇

• 中国化学印记 •

单颗粒光催化剂光生电荷的全时空传输过程

陈春城, 赵进才*()   

  1. 中国科学院化学研究所 北京 100190
  • 出版日期:2022-11-24 发布日期:2022-12-08
  • 通讯作者: 赵进才
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Spatiotemporal Transfer Process of Photogenerated Charge in Single-Particle Photocatalyst

Chuncheng Chen, Jincai Zhao()   

  1. Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
  • Online:2022-11-24 Published:2022-12-08
  • Contact: Jincai Zhao

A series of spatiotemporally resolved surface photovoltage techniques were used to investigate the pho-togenerated charge transfer process within sub-picosecond to second timescale and at sub-micrometer level on single-particle cuprous oxide photocatalyst. A spatiotemporal charge transfer image was pictured. It is found that the high efficiency in charge separation of the facet-specific cuprous oxide single-particle originates mainly from the ultrafast quasi-ballistic inter-facet hot electron transfer process. These findings give a fascinating and deep insight into the photoinduced charge transfer mechanism in semiconductor photocatalyst, and pave a refreshed way to developing photocatalyst.

()
图1 (a)通过晶面工程和缺陷工程实现表面各向异性的单颗粒氧化亚铜光催化剂的构筑；(b)立方(上)和八面体(下)氧化亚铜颗粒的表面光电压成像；(c~e)截角八面体氧化亚铜颗粒的表面光电压成像，(c)无缺陷，(b)含中等量H-VCu缺陷，(e)含过量H-VCu缺陷。b~e中标尺为2 μm[4]
[1]
Takata T, Jiang J Z, Sakata Y, Nakabayashi M, Shibata N, Nandal V, Seki K, Hisatomi T, Domen K. Nature, 2020, 581(7809): 411.

doi: 10.1038/s41586-020-2278-9     URL    
[2]
Wu Y A, McNulty I, Liu C, Lau K C, Liu Q, Paulikas A P, Sun C J, Cai Z H, Guest J R, Ren Y, Stamenkovic V, Curtiss L A, Liu Y Z, Rajh T. Nat. Energy, 2019, 4(11): 957.

doi: 10.1038/s41560-019-0490-3     URL    
[3]
Chen C C, Ma W H, Zhao J C. Chem. Soc. Rev., 2010, 39(11): 4206.

doi: 10.1039/b921692h     URL    
[4]
Chen R T, Ren Z F, Liang Y, Zhang G H, Dittrich T, Liu R Z, Liu Y, Zhao Y, Pang S, An H Y, Ni C W, Zhou P W, Han K L, Fan F T, Li C. Nature, 2022, 610(7931): 296.

doi: 10.1038/s41586-022-05183-1     URL    
[5]
Barroso M, Mesa C A, Pendlebury S R, Cowan A J, Hisatomi T, Sivula K, Grätzel M, Klug D R, Durrant J R. PNAS, 2012, 109(39): 15640.

pmid: 22802673
[6]
Yang Y, Gu J, Young J L, Miller E M, Turner J A, Neale N R, Beard M C. Science, 2015, 350(6264): 1061.

doi: 10.1126/science.aad3459     pmid: 26612947
[7]
Selcuk S, Selloni A. Nat. Mater., 2016, 15(10): 1107.

doi: 10.1038/nmat4672     URL    
[8]
Yu J G, Low J, Xiao W, Zhou P, Jaroniec M. J. Am. Chem. Soc., 2014, 136(25): 8839.

doi: 10.1021/ja5044787     URL    
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