▎ 摘　　要

NOVELTY - A stable nanometer graphene oxide under physical condition comprises two hydrophilic groups comprising a carboxylic acid functional group and a sulfonic acid functional group. USE - The stable nanometer graphene oxide under physical condition is useful for industrial and commercial applications. ADVANTAGE - The stable nanometer graphene oxide under physical condition can reduce the manufacturing cost practically compared with a polyethylene glycol decoration method; thus, it is more favorable for mass production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is a preparation method of the stable nanometer graphene oxide under physical condition. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the flow process of preparing the stable nanometer graphene oxide under physical condition.