Photoelectrochemical properties of nanocrystalline Aurivillius phase Bi2MoO6 film under visible light irradiation

The pressed Bi2MoO6 film electrode was prepared from hydrothermal synthesized Aurivillius phase Bi2MoO6 powders. The physical properties of the powder were characterized by X-ray diffraction and UV–vis diffuse reflectance spectra. The band structure of Bi2MoO6 was investigated by DFT calculations, and the band potentials were measured by slurry method. The flatband potential was determined as −0.32 V vs. NHE at pH 7. Potential and wavelength dependence of photocurrent were investigated, and the effects of reductants on incident-photon-to-current efficiencies were discussed.