▎ 摘　　要

NOVELTY - The method involves heating oxidation graphene solution and amino acid for a certain reaction time. Cooling dialysis is performed after removing impurity ion. The carboxylated oxidation graphene product solution is obtained. The prepared hydroxylation oxidation graphene solution is provided with modified organic separation membrane function layer. The carboxylated oxidation graphene is selected as modified agent. The surface graft is modified to obtain organic separation membrane surface function layer. USE - Modification method for organic separation membrane. ADVANTAGE - The oxidation graphene has high solubility, electric charge character and chemistry reaction activity so as to obtain separation membrane with better permeability, cut-off character and lyophilic character.