Improvement of TiO2 photocatalytic properties under visible light by WO3/TiO2 and MoO3/TiO2 composites

The WO3/TiO2 or MoO3/TiO2 composites with different compositions have been prepared by a facile sol-gel method, and 5 wt% WO3/TiO2 or 2 wt% MoO3/TiO2 composites possess higher photocatalytic activity than pure TiO2 for the degradation of Rhodamine B (RhB) under visible light irradiation.