▎ 摘　　要

NOVELTY - A composite visible light catalytic nanomaterial comprises silver phosphate particles and zinc oxide particles deposited on graphene oxide sheet surface in which composite visible light catalytic material has absorbance of greater than or equal to 0.4 at 200-800 nm UV-visible light region and degrades 25 mg/L rhodamine B solution under visible light excitation with degradation rate of greater than or equal to 80% after 30 minutes and 100% after 60 minutes. USE - A composite visible light catalytic material for degrading rhodamine B organic dye (claimed). ADVANTAGE - Composite visible light catalytic nanomaterial is low-cost and environment-friendly and has simple preparation, high photocatalytic activity, energy utilization, circulation stability, and efficiency, strong degradation activity in visible light, and wide visible light response range. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of visible light catalytic nanomaterial which involves dissolving graphene oxide in deionized water, performing ultrasonic dispersion to obtain 0.02-0.2 wt.% graphene oxide dispersion, dissolving silver nitrate and zinc oxide in deionized water, performing ultrasonic treatment to obtain mixed precursor solution A containing 0.09 mol/L silver nitrate and 0.2-0.8 wt.% zinc oxide, adding precursor solution A dropwise to graphene oxide dispersion while magnetically stirring with volume ratio precursor solution A:graphene oxide dispersion of 1:1, stirring at room temperature for 6-12 hours to obtain mixed precursor solution B, dissolving phosphate in deionized water to obtain 0.15 mol/L phosphate solution, slowly adding phosphate solution dropwise to precursor solution B with volume ratio phosphate solution:precursor solution B of 1:5 while magnetically stirring until gray-green haze appears in reaction system, continuously stirring for 30-60 minutes, filtering, washing with absolute ethanol and deionized water, and vacuum drying. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron microscope image of composite visible light catalytic nanomaterial.