Enhanced photocatalytic activity of Bi2O3 under visible light irradiation by Cu(II) clusters modification

- Amorphous Cu(II) clusters with the size of about 1 nm were loaded on the as-obtained Bi2O3 samples by an impregnation method.
- The crystal structure and the morphologies of Bi2O3 were not changed by the Cu(II) clusters modification.
- The photocatalytic activity for gaseous 2-propanol decomposition was much enhanced by the Cu(II) clusters modification.
- The Cu(II) clusters can play an important role in the charge separation, and serve as reactive sites for oxygen reduction to scavenge the excited electrons.