▎ 摘　　要

NOVELTY - A bismuth oxyiodide-graphene composite visible light catalyst comprises 85-95 %mass bismuth oxyiodide (I) and 5-15 %mass graphene. USE - Bismuth oxyiodide-graphene composite visible light catalyst (claimed). ADVANTAGE - The provided bismuth oxyiodide-graphene composite visible light catalyst is environmentally-friendly, and has high visible light catalytic activity. DETAILED DESCRIPTION - A bismuth oxyiodide-graphene composite visible light catalyst comprises 85-95 %mass bismuth oxyiodide of formula: Bi7O9I3 and 5-15 %mass graphene. An INDEPENDENT CLAIM is included for manufacture of bismuth oxyiodide-graphene composite visible light catalyst, which involves adding (a) 0.249 g potassium iodide in 10 ml ethylene glycol, dissolving (b) 0.7728 g bismuth (III) nitrate pentahydrate in 20 ml ethylene glycol, adding (c) 30 ml ethylene glycol into three-necked flask, refluxing (d) with stirring device in an oil bath which is heated at 160 V, adding resulting solution from (a) to resulting solution (c) and stirring for 10 minutes, adding solution resulting from (b) to resulting solution (d) at 160 degrees C for 3 hours, filtering resultant solution, washing and drying, obtaining bismuth oxyiodide, preparing solution (e) by ultrasonically treating 0.024-0.08 g graphene oxide in 20-30 ml ethanol graphene for 1 hour (g), preparing solution (f) by dissolving 0.45 g bismuth oxyiodide in 30 ml ethylene glycol, adding solution (f) to solution (e), stirring for 1 hour, transferring obtained solution to linear PTFE autoclave at 160 degrees C for 8-10 hours, filtering the resultant solution, washing, drying, and obtaining solid product of bismuth oxyiodide-graphene composite visible light catalyst.