▎ 摘　　要

NOVELTY - Preparing composite photo-catalyst involves taking 0.003-0.006 mol of titanium source and 10-25 mg of graphene oxide dispersed in absolute ethanol under ultrasonic conditions, dissolving 0.003-0.006 mol of fluorine source in distilled water. The mixture is uniformly stirred, then the mixture is transferred to a focused single-mode microwave synthesis to carry out a reaction, and after the reaction is completed, the sample is subjected to suction filtration, washing, and vacuum drying. Fluorine-doped titanium dioxide-graphene composite exposed to high energy surface. 0.003-0.006 mol of cadmium source and 0.005-0.015 mol of sulfur source are dispersed under ultrasonic conditions into ethylene glycol separately, adding the sulfur source solution to the cadmium source solution under ultrasonic stirring, and then adding the fluorine-doped titanium dioxide-graphene composite. USE - Method for preparing composite photo-catalyst. ADVANTAGE - The method enables to prepare composite photo-catalyst with high efficiency, safety and reliability. DETAILED DESCRIPTION - The doped titanium dioxide-omene composite is dispersed into the above solution, and all the reagents are mixed and ultrasonically stirred to uniformly mixture. The mixed solution is transferred to a focused single-mode microwave synthesizer for reaction, and after the reaction is completed, the sample is subjected to suction filtration. The fluorine-doped titanium dioxide-cadmium sulfide-graphene composite photocatalyst exposed to high energy surface is obtained by washing and vacuum drying.