▎ 摘　　要

NOVELTY - Preparing amine molecular intercalation double-reduced graphene oxide composite film comprises using sodium hydroxide as first reducing agent to deoxidize graphene oxide nanosheets and preventing amine molecules from flocculating with graphene oxide, using polyethyleneimine molecules as crosslinking agent and second reducing agent to embed on the surface and interlayer of graphene oxide nanosheets, and making graphene oxide undergo second reduction, the molecularly intercalated double-reduced graphene oxide composite membrane is obtained by stacking the graphene oxide nanosheets that had been reduced twice and molecularly bridged on the polyethersulfone base membrane. USE - The method is useful for preparing amine molecular intercalation double-reduced graphene oxide composite film, which is used for sea water desalination, industrial waste water treatment, drinking water purification, biological pharmacy technology and food science. ADVANTAGE - The composite film has good operation stability in the technical field of water treatment. The preparation process is simple, universal, and has strong controllability. The method is suitable for amplifying synthesis and actual production. DETAILED DESCRIPTION - Preparing amine molecular intercalation double-reduced graphene oxide composite film comprises using sodium hydroxide as first reducing agent to deoxidize graphene oxide nanosheets and preventing amine molecules from flocculating with graphene oxide, using polyethyleneimine molecules as crosslinking agent and second reducing agent to embed on the surface and interlayer of graphene oxide nanosheets, and making graphene oxide undergo second reduction, the molecularly intercalated double-reduced graphene oxide composite membrane is obtained by stacking the graphene oxide nanosheets that had been reduced twice and molecularly bridged on the polyethersulfone base membrane, including the following steps: (1) dispersing polyethyleneimine molecules and graphene oxide in deionized water for 0.5 hour and 1 hour respectively, obtaining amine dispersion liquid and graphene oxide dispersion liquid, then collecting supernatant after the graphene oxide dispersion liquid centrifugation for 20 minutes, (2) adjusting the graphene oxide supernatant pH with 1 mole per liter of sodium hydroxide solution to obtain a mixed solution A, (3) mixing and stirring the mixed solution A and the amine dispersion to obtain the mixed solution B, and (4) vacuum filtering the mixed solution B onto the polyethersulfone base membrane, placing it in a 70°C oven for thermal crosslinking for 2 hours, and obtaining double-reduced graphene oxide composite membrane intercalated with amine molecules.