Preparation, characterization and photocatalytic properties of La/WO3 composites

S-scheme heterojunction based on CuWO4/WO3 microspheres with an improved photocatalytic property under visible light irradiation

“…Meanwhile, WO 3 photocatalytic performances have been widely studied considering their excellent stability, photocorrosion resistance and environmental friendliness. 18,19 Notably, the valence band holes of WO 3 have good oxidizability, the conduction band electrons of WO 3 have poor reducibility, and the electrons of the WO 3 conduction band could not reduce adsorbed O 2 to ·O 2 − . 20 The band gap structure of WO 3 limits the practical application.…”