▎ 摘　　要

NOVELTY - Classifying graphene oxide comprises classifying graphene oxide contained in the graphene oxide dispersion by controlling the pH of the graphene oxide dispersion containing the graphene oxide. USE - The method is useful for classifying graphene oxide. ADVANTAGE - The method classifies large amounts of graphene oxide, so productivity is very high, and industrial applicability is very high. The graphene oxide classified has a very uniform size, and it is very likely to be utilized as high-quality material.