▎ 摘　　要

NOVELTY - Graphene oxide solid is dispersed in ultrapure water, to obtain solution (A). Then, water-soluble coronene derivative is added to the obtained solution (A), to obtain solution (B). Hydrazine hydrate is added to the solution (B), centrifuged and supernatant liquid is removed. The residue is dissolved in ultrapure water, to obtain graphene aqueous solution. USE - Preparation of graphene aqueous solution used in fields like nanoscience technology, biomedicine and material science. ADVANTAGE - The method efficiently and economically provides graphene aqueous solution.