▎ 摘　　要

NOVELTY - Photocatalyst containing graphene-bismuth titanate composite material, is claimed. Preparation of the photocatalyst comprises dissolving bismuth nitrate in nitric acid solution to obtain a first mixed solution, dissolving titanate in alcohol solution having large molecular weight to obtain a second mixed solution, mixing the first and second mixed solutions to obtain a third mixed solution, adding graphene into third mixed solution, stirring, placing the reaction solution in hydrothermal reaction kettle and reacting, washing the resultant sample, vacuum drying, and carrying out heat treatment. USE - Used as photocatalyst containing graphene-bismuth titanate composite material. ADVANTAGE - The composite photocatalyst has excellent photocatalytic performance. DETAILED DESCRIPTION - Photocatalyst containing graphene-bismuth titanate composite material, is claimed. Preparation of the photocatalyst comprises dissolving bismuth nitrate in nitric acid solution having pH of 0-1.5% to obtain a first mixed solution, dissolving titanate in alcohol solution having large molecular weight to obtain a second mixed solution, mixing the first and second mixed solutions to obtain a third mixed solution, where the mol ratio of bismuth and titanium in the third mixed solution is 1:10-12, then adding 0.5-2 g graphene into 100 ml third mixed solution, stirring for 2-4 hours, placing the reaction solution in a hydrothermal reaction kettle and reacting, washing the resultant sample with deionized water for multiple times, vacuum drying, and carrying out heat treatment at high temperature of 350-500 degrees C to obtain the photocatalyst.