The Enhanced Electrons and Holes Separation for Bi₂MoO₆/TiO₂Z-scheme Heterojunction by Ag Loading

The Bi2MoO6/TiO2 and Bi2MoO6/Ag/TiO2 composites were solvothermally synthesized and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and (high resolution) transmission electron microscopy ((HR)TEM). The Bi2MoO6/TiO2 and Bi2MoO6/Ag/TiO2 composites exhibited higher photocatalytic activity than pure Bi2MoO6. 100% of the RhB dye molecules could be decomposed over Bi2MoO6/Ag/TiO2 composite in 120 min. The enhanced photocatalytic activity of Bi2MoO6/TiO2 and Bi2MoO6/Ag/TiO2 composite was attributed to the efficient separation of photoinduced electrons and holes. The mechanism for the enhanced photocatalytic activity is discussed.