▎ 摘　　要

Hydrogen gas has attracted a great deal of attention as a fuel due to its non-polluting combustion reaction. A wide variety of approaches have been employed to generate this green fuel with a remarkable concentration on photocatalytic pathways, in which a free source of energy is consumed for hydrogen evolution. Accordingly, we focused on construction of a photocatalyst of gold supported on graphene oxide-silicon dioxide (SiO2) for hydrogen generation through photocatalytic degradation of formic acid. It was demonstrated that the modifi-cation of SiO2 with graphene oxide and gold surprisingly extended photo-absorption of the semiconductor. The nanocomposite productively consumed photoelectrons for conversion of protons to hydrogen with turnover frequency of 539 h-1 at room temperature. This high activity of the nanocomposite was ascribed to the formation of simultaneous electron-rich and hole-rich centers in interfaces of graphene oxide-gold and graphene oxi-de-SiO2, respectively, which accelerated the process by both hydrogen generation in electron-doped sites and CO2 evolution in hole-doped platforms.