▎ 摘　　要

NOVELTY - Preparation of titanium dioxide (TiO2)/graphene composite film involves preparing graphene oxide by chemical exfoliation; sequentially forming graphene oxide and TiO2 nanofilms with uniform thickness by spin-coating; and putting the layered composite film under UV lamp, and irradiating to reduce graphene oxide into graphene by photogenerated electrons generated by TiO2 during irradiation to form TiO2/graphene composite film. USE - Method for preparing TiO2/graphene composite film (claimed) used for photocatalytic purification. ADVANTAGE - The composite film has improved visible light absorption efficiency and increased organic pollutant degradation efficiency.