▎ 摘　　要

NOVELTY - A graphene-bismuth titanate composite material photocatalyst involves preparing graphene according to the Hummers method, dissolving bismuth nitrate in 0-1.5 pH value of nitric acid solution, dissolving, taking titanate, adding alcohol solution, mixing, adding prepared solution, mixing, adding 0.5-2 g of graphene, stirring for 2-4 hours, carrying out hydrothermal reaction, washing with deionized water, and vacuum drying at 350-500 degrees C. USE - Method for preparing graphene-bismuth titanate composite material photocatalyst (claimed). ADVANTAGE - The product has excellent photocatalytic effect.