▎ 摘　　要

NOVELTY - Photocatalyst comprises graphene nanosheet and doping element dispersed in graphene nanosheet. USE - The photocatalyst is useful for water decomposition (claimed). ADVANTAGE - The photocatalyst has excellent photolysis reaction in visible ray region, cycling stability and storage stability. The method improves the photocatalytic properties for water splitting by controlling the charge distribution and active sites on the surface of graphene, and environmentally friendly raw materials and simple process. DETAILED DESCRIPTION - AN INDEPENDENT CLAIM is also included for producing a photocatalyst for water decomposition comprising (a) mixing a carbon-containing precursor with a doping source, (b) hydrothermal synthesis of the mixed mixture and (c) preparing a doped graphene nanosheet by carbonizing the hydrothermal synthesized reactant