Hydrogen peroxide synthesis from water and oxygen using a three-component nanohybrid photocatalyst consisting of Au particle-loaded rutile TiO2 and RuO2 with a heteroepitaxial junction

Abstract

Thin heteroepitaxial (HEPI) layers of RuO₂ were selectively formed on the TiO₂ surface of Au nanoparticle-loaded rutile TiO₂ particles (RuO₂#TiO₂–Au) with an orientation of RuO₂(110)//TiO₂(110) by a hydrothermal method, and the three-component nanohybrid exhibits a high photocatalytic activity far exceeding that of Au/TiO₂ for hydrogen peroxide generation from water and oxygen due to the HEPI junction-induced unique morphology of RuO₂.