▎ 摘　　要

NOVELTY - A silver phosphate nanosphere-graphene composite material comprises modified graphene on surface in-situ growing silver phosphate nano-sphere. In the composite material, a nano ball and graphene is 10-25 of graphene oxide surface which is silver phosphate nano-sphere of 0.33 millimoles. USE - As visible light catalyst for degrading the organic pollutant; for catalytic degradation of organic dye (all claimed). ADVANTAGE - The photo-catalytic experiment proves that composite material has excellent visible light catalytic activity. The preparation method is simple, and is capable of large scale production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of silver phosphate nano ball-graphite oxide composite material involving: taking bovine serum albumin in distilled water as solution method at room temperature, gradually dropping the silver nitrate solution (1 M), then forming the white colloidal solution, then dripping into the graphene oxide solution, magnetic force stirring for 2 hours after dropping the disodium hydrogen phosphate solution (1 M), magnetic force stirring for 4 hours, centrifuging, washing by distilled water, drying to obtain a nanoball graphite oxide composite material. The molar ratio of silver nitrate solution and disodium hydrogen phosphate solution is 3:1; and (2) catalytic degradation of organic dye involving: dispersing phosphoric acid (O.025) in nano ball-graphite oxide composite material to concentration of 50 ml which is 52 ppm of rhodamine B solution, in the dark state magnetic force to stir for 30 minutes, then simulated sunlight with 150 W xenon lamp, each time taking 3 ml suspension liquid, centrifugal separation and coagent for ultraviolet and visible spectrograph measuring absorption spectrum.