▎ 摘　　要

NOVELTY - Separating and purifying graphene oxide involves dissolving the crude product of graphene oxide in deionized water or deionized water containing 10 wt.% hydrogen chloride, and configuring it into a mixed solution of 0.1-0.7 g/ml. 1 pts. wt. Mixed solution is diluted with 5-15 pts. wt. methanol, ethanol, tetrahydrofuran or acetone to obtain a mixed diluted solution with a pH of 1-2. Triethylamine is used to adjust the pH of the mixed solution to 5-6. A solid substance is precipitated rapidly, and after filtering, it is placed in a vacuum oven at 25-40 degrees C for 6-8 hours to obtain a high-purity graphene oxide product with a purity of not less than 99%. USE - Method for separating and purifying graphene oxide. ADVANTAGE - The method greatly improves the preparation efficiency, shortens the preparation time, and avoids the complicated cleaning process. The graphene oxide purified by the method has very high dispersion stability, and not less than 99% purity. The method provides a new fast and efficient separation method for the preparation of high-purity graphene oxide.