▎ 摘　　要

NOVELTY - Enhancing the water stability of the graphene oxide composite film comprises (1) (1) configuring graphene oxide dispersion by adding graphene oxide material to water, stirring, carrying out ultrasonic processing to obtain uniform graphene oxide dispersion, (2) preparing short-chain molecular cross-linked graphene oxide by dissolving short-chain molecules in a graphene oxide dispersion to obtain a short-chain molecular cross-linked graphene oxide film-forming solution, (3) preparing long chain molecule modified support by dissolving long chain molecules in water, adding a cross-linking agent and stirring for 1-5 minutes to obtain a long chain molecular solution, coating a solution of long-chain molecules on the surface of a ceramic or organic support, keeping it for 1-15 minutes and washing it, drying the treated support and allowing to stand. USE - The method is useful for enhancing the water stability of the graphene oxide composite film. ADVANTAGE - The method is simple and convenient. DETAILED DESCRIPTION - Enhancing the water stability of the graphene oxide composite film comprises (1) (1) configuring graphene oxide dispersion by adding graphene oxide material to water, stirring, carrying out ultrasonic processing to obtain uniform graphene oxide dispersion, (2) preparing short-chain molecular cross-linked graphene oxide by dissolving short-chain molecules in a graphene oxide dispersion to obtain a short-chain molecular cross-linked graphene oxide film-forming solution, (3) preparing long chain molecule modified support by dissolving long chain molecules in water, adding a cross-linking agent and stirring for 1 -5 minutes to obtain a long chain molecular solution, coating a solution of long-chain molecules on the surface of a ceramic or organic support, keeping it for 1-15 minutes and washing it, drying the treated support and allowing to stand, (4) preparing graphene oxide composite film by applying the pressure-driven deposition of the short-chain molecular cross-linked graphene oxide film-forming solution prepared in step (2) to form a film layer on a long-chain molecularly modified support, drying the prepared graphene oxide composite film.