▎ 摘　　要

NOVELTY - Microwave radiation rapid preparation of soluble graphene nanosheet comprises mixing expanded graphite, sodium persulfate, sodium vanadate, tungstovanadophosphoric heteropoly acid (H4PW11VO40) and deionized water at room temperature, vacuum-filtering, washing filter cake until neutralized, and naturally drying; and oxidizing to obtain graphene oxide, vacuum-filtering, washing filter cake until neutralized, sonicating in water, adding polyacrylamide dispersion liquid, sonicating, filtering, and subjecting filtrate to microwave radiation. USE - Method for microwave radiation rapid preparation of soluble graphene nanosheet (claimed). ADVANTAGE - The method is simple, fast, environment-friendly and suitable for large scale production, does not need any photocatalyst or reducing agent, and has low cost.