Bi2WO6 has attracted more attention

Bi2WO6 has attracted more attention on the photocatalytic degradation of organic pollutants and energy conversion due to its unique crystal structure, reactivity and stability. However, pure Bi2WO6 nanosheet has a photo-absorption regionfrom UV to the visible light shorter than 450 nm, which accounts for a small part of the solar spectrum. What’s more, fast recombination rate of electron-hole pairs significantly restricts its energy conversion efficiency. Therefore, a large number of studies have focused on the noble metal doping, non-noble metal doping and building hybrid structure to change the electronic structure and intrinsic properties of Bi2WO6 materials. Among all the methods, building the specific interface between two well matched photocatalysts with different energy levels is a promising strategy, which can realize the effective charge transfer at the interface to promote the separation of photogenerated electrons-holes resulting an enhancement photo catalytic activity.