▎ 摘　　要

NOVELTY - Preparation of graphene quantum dots (GQDs)/titanium dioxide (TiO2)/cupric oxide (CuO) composite antibacterial material comprises heating and melting citric acid and adjusting pH to 6-8 by alkaline solution to prepare GQDs aqueous solution; adding dropwise sodium hydroxide solution into copper acetate monohydrate solution, acutely stirring to obtain solution, putting into reaction kettle and hydrothermally reacting to prepare CuO; adding TiO2 into deionized water, adding sodium hydroxide, adding CuO, violently stirring, reacting in water bath, washing and drying at 100 degrees C for 1 hour to obtain TiO2/CuO solid; and preparing TiO2/CuO aqueous solution, adding GQDs, ultrasonically reacting, centrifuging, washing and drying. USE - Method for preparing GQDs/TiO2/CuO composite antibacterial material for bacteriostatic and sterilization applications (claimed) for antibacterial coating field. ADVANTAGE - The material has simple preparation and low-cost materials, and is suitable for industrial production.