▎ 摘　　要

NOVELTY - Graphene oxide membrane film (100) comprises multiple stacked graphene oxide layers; and a first cross-linking agent (120) and a second cross-linking agent (130) which are intercalated between the stacked graphene oxide layers to chemically bond with the graphene oxide (110). The first cross-linking agent is single molecule, and the second cross-linking agent is polymer. USE - Used as graphene oxide membrane film. ADVANTAGE - The graphene oxide membrane film has improved chemical and mechanical stability, and membrane properties i.e. solution flux and salt rejection by cross-linking graphene oxide layer by adding single molecule and polymer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing graphene oxide membrane film comprising (a) preparing graphene oxide, (b) dispersing the graphene oxide in distilled water and ultrasonicating to obtain graphene oxide dispersion solution, (c) adding first cross-linking agent and second cross-linking agent to the graphene oxide dispersion solution, heating and stirring to obtain mixed solution, and (d) filtering the obtained mixed solution on support membrane. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the graphene oxide membrane film. Graphene oxide membrane film (100) Graphene oxide (110) First cross-linking agent (120) Second cross-linking agent (130)