Hydrogen can be produced at ambient conditions via an efficient, technologically simple, ecologically benign, and potentially very low-cost process, with the use of a Pt/TiO 2 photocatalyst and three abundant and renewable sources: biomass, solar light, and water. The method combines photocatalytic splitting of water and lightinduced oxidation of biomass compounds into a single process, able to produce hydrogen at room temperature and atmospheric pressure.