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

Abstract

Our research unveils the synthesis of BiVO4-Bi2O3 triangular sheet composites, demonstrating their impact on charge separation ability under visible light irradiation. We found that composites with optimal BiVO4 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 BiVO4-Bi2O3 triangular sheet composites in adjusting photosensitivity and enhancing the photocatalytic ability of β-Bi2O3 triangular sheets, opening up new avenues for research in the application of the sustainable environment field.