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Citation: Xiaofan ZHANG, Yu DUAN, Meijie SHI, Nan LU, Renhong LI, Xiaoqing YAN. Z-scheme Co3O4/BiOBr heterojunction for efficient photoreduction CO2 reduction[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(9): 1878-1888. doi: 10.11862/CJIC.20250079 shu

Z-scheme Co3O4/BiOBr heterojunction for efficient photoreduction CO2 reduction

  • School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China

  • Corresponding author: Renhong LI,  Xiaoqing YAN, yanxiaoqing927@126.com
  • Received Date: 11 March 2025
    Revised Date: 10 July 2025

Figures(8)

  • A Co3O4/BiOBr heterojunction was synthesized via a facile one-step solvothermal method for highly selective photocatalytic CO2 reduction. The optimized Co3O4/BiOBr-0.8 catalyst exhibited CO and CH4 evolution rates of 112.2 and 5.5 μmol·g-1·h-1, respectively, representing 6.3-fold and 3.9-fold enhancements over pristine BiOBr. The heterojunction demonstrated broadened light absorption, enhanced photoelectrochemical activity, reduced charge-transfer resistance, and improved separation efficiency of photogenerated carriers (e-/h+). These synergistic effects were attributed to the formation of a Z-scheme heterostructure, which facilitated solar energy utilization and electron reduction capacity while suppressing carrier recombination.
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