▎ 摘　　要

NOVELTY - Purification of graphene oxide involves dispersing the graphene oxide sample in the dispersant comprising water or ethanol, slowly adding the liquid dispersant on top of it, precipitating for 10-60 minutes, taking the upper dispersion liquid, washing, filtering, and drying to obtain graphene oxide with less graphite impurities. The density and viscosity of the liquid dispersant are higher than that of the dispersant. USE - Purification of graphene oxide used in dust reduction chamber and cyclone separation. ADVANTAGE - The method is simple, and enables purification of graphene oxide through gravity settling method using alcohol with different viscosity density for separation, and the post-treatment is simple.