Abstract
Novel graphene-like boron nitride (BN)/Bi3O4Br photocatalysts have been controllably synthesized through a facile solvothermal method for the first time. Layer contact stacking between graphene-like BN and ultrathin Bi3O4Br was achieved with strong interaction. Dehalogenation is designed to harvest more visible light, and the ultrathin structure of Bi3O4Br is designed to accelerate charge transfer from inside to the surface. After graphene-like BN was engineered, photocatalytic performance greatly improved under visible light irradiation. Graphene-like BN can act as a surface electron-withdrawing center and adsorption center, facilitating molecular oxygen activation. O2•− was determined to be the main active species during the degradation process through analyses of electron spin resonance and XPS valence band spectra.
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This work was financially supported by the Fundamental Research Funds for the Central Universities (No. 30922010302) and the Start-Up Grant from Nanjing University of Science and Technology (AE89991/397).
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Di, J., Li, Y., Zhang, Y. et al. Layer-Contacted Graphene-Like BN/Ultrathin Bi3O4Br Stacking for Boosting Photocatalytic Molecular Oxygen Activation. Trans. Tianjin Univ. 29, 235–245 (2023). https://doi.org/10.1007/s12209-022-00344-9
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DOI: https://doi.org/10.1007/s12209-022-00344-9