Abstract: Graphene shows a promising application potential in the field of photocatalysis due to the satisfactory performance, such as a strong chemical stability, high specific surface area and electrical conductivity. The antibacterial properties of graphene-based visible light catalytic composites were reviewed. Firstly, the photocatalytic antibacterial mechanism of graphene-based photocatalytic materials was briefly introduced, the positive role in the photocatalytic reaction process of graphene was summarized, including expanding range and intensity of light absorption, preventing the photoelectron-hole from recombining and facilitating the adsorption. The antibacterial research progress of various graphene-based visible light catalytic materials was introduced, including binary TiO₂/graphene composite (common, doping, defect), ternary composite and other semiconductor/graphene materials. Finally, it was pointed out that graphene-based visible light catalytic materials have a promising potential in the sterilization function of refrigerators. The application of graphene-based visible light catalytic materials under the effect of physical field would further improve the antibacterial effect, and the combination of sensor technology could further improve the intelligent sterilization function of refrigerators.

Key words: Graphene, Semiconductor, Visible light, Photocatalytic, Antibacterial, Refrigerator