Triangular BiVO₄-Bi₂O₃ ultrathin sheet composites for enhancement of photoelectrochemical and photocatalytic performance

Abstract

Our research unveils the synthesis of BiVO 4-Bi 2 O 3 triangular sheet composites, demonstrating their impact on charge separation ability under visible light irradiation. We found that composites with optimal BiVO 4 content exhibit enhanced photocurrent density, reduced interfacial resistance, prolonged carrier life, increased surface active sites, improved charge transfer efficiency, and carrier concentration. The proposed Z-scheme mechanism appears to govern this composite system's efficient separation of photogenerated carriers. These findings underscore the potential of BiVO 4-Bi 2 O 3 triangular sheet composites in adjusting photosensitivity and enhancing the photocatalytic ability of beta- Bi 2 O 3 triangular sheets, opening up new avenues for research in the application of the sustainable environment field.