▎ 摘　　要

NOVELTY - Preparation of graphene-based photocatalyst comprises preparing graphene oxide powder; preparing graphene oxide-titanium dioxide composite powder; and preparing graphene-phthalocyanine-copper composite powder. USE - Method for preparing graphene-based photocatalyst. ADVANTAGE - The method greatly increases effective contact area of titanium dioxide photocatalyst with the graphene nano sheet, inhibits growth of titanium dioxide size, and enhances adsorption performance and light-catalyzing performance of photocatalyst. The photocatalyst has good stability in water and good absorption of copper phthalocyanine in the visible light band, greatly improves utilization of solar light in the hydrogen production process, and has improved photocatalytic performance.