Visible-light photocatalytic activity of Ag2O coated Bi2WO6 hierarchical microspheres assembled by nanosheets

- Bi2WO6 hierarchical microspheres assembled by nanosheets and dispersed nanosheets are synthesized.
- Ag2O/Bi2WO6 heterostuctures exhibites an enhanced photocatalytic activity compared with the Bi2WO6 nanostructures.
- Photocatalytic activity of the Ag2O/Bi2WO6 microspheres is higher than that of the nanosheets.
- Bi2WO6 hierarchical structure is an excellent architecture for loading of Ag2O nanoparticles.