▎ 摘　　要

NOVELTY - A graphene oxide/silver phosphate/silver bromide ternary composite photocatalyst comprises graphene oxide as substrate, and silver phosphate and silver bromide particles which are deposited on the surface. The ratio of silver phosphate and silver bromide is 1:1.2. The amount of graphene oxide is 0.625-5% of the total mass of catalyst. USE - Graphene oxide/silver phosphate/silver bromide ternary composite photocatalyst used in treatment of organic dye-containing wastewater (claimed). ADVANTAGE - The graphene oxide/silver phosphate/silver bromide ternary composite photocatalyst has excellent photocatalytic performance, high specific surface area, rapid photogenic charge transfer capacity, low electron-hole pair recombination ratio, and efficient oxidation capacity, and is suitable for effective degradation of organic dye-containing wastewater. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of graphene oxide/silver phosphate/silver bromide ternary composite photocatalyst, which involves (i) dissolving graphene oxide prepared by modified Hummers method in deionized water, ultrasonically processing for 1-2 hours to obtain graphene oxide solution, adding silver nitrate to the solution, ultrasonically processing for 1-2 hours, adding sodium hydrogen phosphate solution for 2-4 hours to obtain graphene oxide/silver phosphate suspension, (ii) dripping sodium bromide solution to suspension, mixing at room temperature in dark condition for 2-4 hours, centrifugally washing the precipitate, and drying.