▎ 摘　　要

NOVELTY - Silver phosphate/graphene/titanium dioxide nano-composite material comprises graphene nano sheet, silver phosphate nanoparticles and titanium dioxide nanoparticle. The surface of the graphene nano sheet is tightly coated with silver phosphate nanoparticles and the surface of the silver phosphate nanoparticles is uniformly doped with titanium dioxide nanoparticles. The silver phosphate nanoparticle has a particle size of 200 nm. The titanium dioxide nanoparticle is anatase has a particle size of 20 nm. USE - Used as silver phosphate/graphene/titanium dioxide nano-composite material. ADVANTAGE - The nanocomposite material: has high efficiency, stable catalytic activity under visible light. The method is simple, has easily controllable reaction conditions; and is suitable for large-scale industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the silver phosphate/graphene/titanium dioxide nano-composite material, comprising (a) dissolving graphene oxide powder in deionized water to obtain graphene oxide dispersion liquid, ultrasonically dispersing to obtain 0.5 mg/ml graphene oxide dispersion liquid, (b) dissolving disodium hydrogen phosphate in deionized water to obtain disodium hydrogen phosphate solution, ultrasonically dispersing uniformly to obtain 0.02 mol/l disodium hydrogen phosphate solution, (c) dissolving solid silver nitrate in graphene oxide dispersion liquid such that the concentration of silver nitrate is 0.06 mol/l, stirring uniformly to obtain precursor solution A, adding disodium hydrogen phosphate solution in a dropwise manner, continuously stirring on a magnetic stirring under dark conditions, and after finishing the addition stirring at room temperature for 1 hour, centrifugally separating the precipitate, washing with deionized water, repeatedly washing with anhydrous ethanol for multiple times, and vacuum drying, and (d) adding the vacuum dried material in 40 ml aqueous titanium sulfate solution, where the concentration of titanium is 0.005-0.02 mol/ml, magnetically stirring, transferring 50 ml mixed solution into a stainless steel reaction kettle having polyfluortetraethylene lining, carrying out hydrothermal reaction at 120-160 degrees C for 5-10 hours, centrifugally separating the precipitate, washing with deionized water, repeatedly washing with anhydrous ethanol for multiple times, and vacuum drying.