▎ 摘　　要

NOVELTY - Photocatalyst comprising bismuth phosphate and graphene oxide composite material (I) is new. Bismuth phosphate is provided with single inclined crystal type or hexagonal crystal type structure. Graphene oxide is reduced in the preparation process to obtain reduced graphene oxide RGO form. The mass percentage of graphene oxide and bismuth phosphate is 0.5-10:100. USE - The photocatalyst is used: for photocatalytic decomposition of water into hydrogen, or photocatalytic decomposition of organic pollutant in water (claimed); and in environmental pollution treatment field. ADVANTAGE - The method has simple preparation process, is easy to operate, dose not require expensive complex equipment, has mild synthesis conditions, and is suitably popularized on a large scale. DETAILED DESCRIPTION - Photocatalyst comprising bismuth phosphate and graphene oxide composite material of formula (BiP04/RGO) (I) is new. Bismuth phosphate is provided with single inclined crystal type or hexagonal crystal type structure. Graphene oxide is reduced in the preparation process to obtain reduced graphene oxide RGO form. The mass percentage of graphene oxide and bismuth phosphate is 0.5-10:100. An INDEPENDENT CLAIM is also included for preparing photo-catalyst.