Graphene oxide purification method and graphene oxide

Abstract

The present invention discloses a graphene oxide purification method and a graphene oxide. The purification method of graphene oxide includes the following steps: ion exchange purification: sequentially passing a graphene oxide solution through a cation exchange resin and an anion exchange resin. The cation exchange resin is a hydrogen cation exchange resin, and the anion exchange resin is a hydroxide anion exchange resin. The purification method provided by the present invention has the advantages of simple operation and high purification efficiency, and the content of each metal impurity after purification is less than 10 ppm. In addition, the used ion exchange resin can also be reused through regeneration, which is energy-saving and environment-friendly.

Dependencies are inferred from the claim text.