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Citation: Han-Mei HU, Tao WANG, Xiao-Hui LING, Lu-Lu PENG, Tao WANG, Yun-Yun HE, Yu-Ting SUN, Chong-Hai DENG. Preparation and photocatalytic CO2 reduction performance of BiOBr-OV/RGO composite[J]. Chinese Journal of Inorganic Chemistry, ;2023, 39(2): 234-244. doi: 10.11862/CJIC.2022.290 shu

Preparation and photocatalytic CO2 reduction performance of BiOBr-OV/RGO composite

  • 1.

    School of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, China

  • 2.

    School of Energy Materials and Chemical Engineering, Hefei University, Hefei 230601, China

  • Corresponding author: Chong-Hai DENG, chdeng@mail.ustc.edu.cn
  • Received Date: 17 July 2022
    Revised Date: 19 November 2022

Figures(10)

  • The binary composite (BiOBr/RGO) composed of tetragonal BiOBr nanosheet and reduced graphene oxide (RGO) was firstly prepared by hydrothermal synthesis method, and then photocatalyst BiOBr-OV/RGO with the rich oxygen vacancy (OV) was further obtained by vacuum heat treatment. The crystal structure, chemical composition, and photoelectric properties were characterized by various techniques. The as-prepared BiOBr-OV/RGO composite photocatalyst exhibited the best photocatalytic activity for photocatalytic CO2 reduction under the simulated solar light. The best evolution rate of the main reduction product CO reached 15.67 μmol·g-1·h-1, which was 4.5, 2.5, and 1.4 times that of pure BiOBr, BiOBr-OV, and BiOBr/RGO, respectively. Furthermore, the photocatalytic reaction mechanism for BiOBr-OV/RGO could be attributed to the enhanced visible light absorption and the efficient photogenerated charge carrier separation, thereby boosting the photocatalytic reaction activity.
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