A visible-light active TiO photocatalyst multilayered with WO.

Sputter-deposited TiO films with high visible-light photocatalytic activity were successfully realized by a hybrid TiO/Pt/WO film structure with Pt nanoparticles uniformly distributed at the interface of the TiO and WO films. The TiO/Pt/WO hybrid films enable the complete decomposition of CHCHO under visible-light irradiation. The water contact angle of the TiO/Pt/WO hybrid films reaches below 5° under visible-light irradiation.