Visible-Light-Induced Hydrogen and Oxygen Formation over Pt/Au/WO3 Photocatalyst Utilizing Two Types of Photoabsorption Due to Surface Plasmon Resonance and Band-Gap Excitation

Photocatalytic H2 and O2 formations under visible light irradiation (λ > 400 nm) are demonstrated using Pt–Au nanopaticles for the reduction site and WO3 for the oxidation site in solid-state Pt/Au/WO3.