▎ 摘　　要

NOVELTY - The preparation method of silver/graphene/titania nanotube composite film photoanode involves fabricating titania nanotubes on the surface of a titanium substrate. The graphene/titania nanotube composite film is prepared by cyclic voltammetry, and light reduction deposition method. USE - Preparation of silver/graphene/titania nanotube composite film photoanode for photogenerated cathodic protection. ADVANTAGE - The method enables the preparation of silver/graphene/titania nanotube composite film photoanode capable of exhibiting excellent protective effect on the cathode under visible light irradiation with high stability, and reduces the electrode potential to prior value, when the light is stopped for a certain period of time.