Creation of New Energy by Photocatalyst

Technology of Clean Hydrogen Fuel Production from Solar Light and Water

Abstract

Recent progress in photocatalytic decomposition of water to H₂ and O₂ using semiconductor catalyst has been reviewed. It was found that Na₂CO₃ addition to Pt-TiO₂ suspension in water promoted the stoichiometric decomposition of water extremely. This Na₂CO₃ addition method has proved to be very useful to accelerate water splitting over various kinds of oxide semiconductor catalysts. Finaly, it was demonstrated for the first time all over the world that water was decomposed efficiently as well as stoichiometrically to H₂ and O₂ by NiO-TiO₂ catalyst and real solar UV light irradiation.