▎ 摘　　要

NOVELTY - High-acidity graphite oxide solution is uniformly stirred in deionized water, and aqueous phase containing graphite oxide is separated. Oxidized graphite is washed and ultrasonically dispersed to obtain graphene oxide dispersion. Obtained dispersion is encapsulated in synthetic organic polymer fabric bag and subjected to dialyzed cleaning process, to obtain high-purity graphene oxide solution. The concentration of graphite oxide in the organic polymer synthetic fabric bag dilute solution is 0.5-20 mg/ml. Obtained graphene oxide solution is freeze-dried to obtain graphene oxide powder. USE - Purification of graphene oxide (claimed). ADVANTAGE - The method efficiently and economically provides purified graphene oxide, by simple method. DETAILED DESCRIPTION - High-acidity graphite oxide solution having pH of 0.5-1, is uniformly stirred in deionized water, and aqueous phase containing graphite oxide is separated. The upper aqueous phase then is removed, stirred with deionized water, and oxidized graphite is washed and ultrasonically dispersed to obtain graphene oxide dispersion. The concentration of high-acidity graphite oxide solution is 10-300 mg/mL. The concentration of graphene oxide is adjusted to 0.5-20 mg/mL, and encapsulated in synthetic organic polymer fabric bag. The resultant product is subjected to dialyzed cleaning process, and the pH is adjusted to 3 to obtain high-purity graphene oxide solution. The concentration of graphite oxide in the organic polymer synthetic fabric bag dilute solution is 0.5-20 mg/ml. The obtained graphene oxide solution is freeze-dried to obtain graphene oxide powder.