A new class of bimetallic Au–Pt/TiO₂ photocatalysts were developed and employed in H₂ photoassisted production using ethanol as a sacrificial reagent both under UV-A and simulated sunlight irradiation. Remarkably, preliminary experiments show promising hydrogen evolution under visible light using Au0.5–Pt0.5/TiO₂ with methanol. The presence of bimetallic Au–Pt nanoparticles and the TiO₂ visible light absorption, induced by the presence of oxygen vacancies and/or Ti³⁺, are the two parameters accounting for the difference in activity.