▎ 摘 要
NOVELTY - Preparing composite photocatalyst comprises (i) preparing bismuth-oxygen-bromine complex (Bi10O25Br12); (ii) preparing reduced graphene oxide; and (iii) adding bismuth-oxygen-bromine complex (Bi10O25Br12) and reduced graphene oxide into a polar solvent and stirring to establish an adsorption/desorption equilibrium. USE - The method is useful for preparing composite photocatalyst.