▎ 摘　　要

NOVELTY - Preparing forward osmosis film comprises adding aminated graphene quantum dot aqueous solution to polyethyleneimine, the oil phase is benzene triformyl chloride solution, the steps includes (i) dissolving high molecular polymer ethylenediamine in de-ionized water, adding amino graphene quantum point nano grains, stirring uniformly, preparing into aqueous phase monomer solution, (ii) dissolving polybasic acyl chloride in organic solvent to obtain organic phase solution, (iii) soaking interfacial polymerization, reacting in aqueous phase monomer solution for 5-30 minutes, taking out and drying. USE - The osmosis film is useful for desalinating, sewage treating and/or food processing (claimed). ADVANTAGE - The method is simple and economical. DETAILED DESCRIPTION - Preparing forward osmosis film comprises adding aminated graphene quantum dot aqueous solution to polyethyleneimine, the oil phase is benzene triformyl chloride solution, the steps includes (i) dissolving high molecular polymer ethylenediamine in de-ionized water, adding amino graphene quantum point nano grains, stirring uniformly, preparing into aqueous phase monomer solution, (ii) dissolving polybasic acyl chloride in organic solvent to obtain organic phase solution, (iii) soaking interfacial polymerization, reacting in aqueous phase monomer solution for 5-30 minutes, taking out, drying film surface in air with aqueous phase monomer solution for 10-120 seconds to form complex layer, treating film interfacial polymerization at 50-80 degrees C for 5-30 minutes, removing the organic solvent and promoting interfacial polymerization.