▎ 摘　　要

NOVELTY - Method for preparing graphene oxide foam loaded bismuth oxyiodide composite photocatalyst involves (i) taking a graphene oxide dispersion, impregnating with sponge, sintering, removing sponge to obtain graphene oxide foam with an interpenetrating network structure and carrying out vacuum impregnation on the graphene foam in a mixed solution of ethylene glycol, ethanol and water, so that the inner and outer surfaces of the graphene foam are wetted, (ii) preparing a mixed solution of bismuth nitrate and potassium iodide and (iii) soaking the graphene foam wetted in the step (i) into the mixed solution prepared in the step (ii), taking out a sample after a small amount of orange-red sediment exists on the graphene foam, sequentially carrying out rinsing several times using a mixed solution of ethylene glycol and water and using absolute ethyl alcohol and drying. USE - The method is useful for preparing the composite photocatalyst used as a photocatalyst for degradation of organic pollutants in water (claimed). ADVANTAGE - The method provides the composite photocatalyst with better exerting photocatalytic performance and a composite structure in which the graphene oxide foam does not block bismuth oxyiodide and does not affect the light absorption of bismuth oxyiodide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the composite photocatalyst prepared by the method.