▎ 摘　　要

NOVELTY - Photocatalyst g-C3N4/GO complex material, is claimed. The g-C3N4 is granular, lumpy, or lamellar, and the GO is lamellar. USE - Used as photocatalyst g-C3N4/GO complex material. ADVANTAGE - The method is simple and environmentally friendly. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the photocatalyst g-C3N4/GO complex material, comprising (i) mixing g-C3N4 and graphene oxide, and dispersing them by ultrasound, (ii) adding a metal salt solution to the mixed solution prepared in step (i), stirring the mixture and hydrothermally reacting and (iii) freeze drying the product obtained in step (ii) and taking out the pore-forming agent.