▎ 摘　　要

NOVELTY - Synthesis of visible light reduced soluble graphene composite material, involves mixing and stirring expanded graphite, sodium persulfate, sodium vanadate, phosphomolybdic acid and deionized water at room temperature, filtering the obtained mixture under reduced pressure, washing the filter cake to neutral, and drying filter cake naturally, oxidizing filter cake to obtain graphene oxide, filtering the obtained material, adding polyacrylamide solution after ultrasonically dispersing, and reducing filtrate after ultrasonically filtering. USE - Synthesis of visible light reduced soluble graphene composite material (claimed). ADVANTAGE - The method ensures simple, fast and economical synthesis of visible light reduced soluble graphene composite material, and effectively prevents the need of any optical catalyst or a reducing agent to achieve a large-scale production of stable soluble graphene composite material and is environmentally-friendly. DETAILED DESCRIPTION - Synthesis of visible light reduced soluble graphene, involves mixing and stirring expanded graphite, sodium persulfate, sodium vanadate, phosphotungstic acid and deionized water at room temperature, filtering the obtained mixture under reduced pressure, washing the filter cake to neutral, and drying filter cake naturally, oxidizing filter cake to obtain graphene oxide, again filtering the resulting material, washing the resulting cake with deionized water until neutral, filtering the obtained material after ultrasonically filtering, adding polyacrylamide solution after ultrasonically dispersing, and reducing filtrate after filtering.