▎ 摘　　要

NOVELTY - A filter membrane comprises lamellar membrane graphene oxide/ethylene glycol composite filter membrane with thickness of 0.8-1 nm comprising 92-95 wt.% graphene oxide and 5-8 wt.% ethylene glycol. USE - Method for preparing filter membrane used for sewage treatment or seawater desalination for filtration performance device and water flux device (claimed). ADVANTAGE - The product has good water flux and high interception rate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of filter membrane comprising preparing 1 mg/mL graphene oxide aqueous solution, ultrasonicating, mixing with 1.2:1 mass ratio of sodium hydroxide and chloroacetic acid according to mass ratio of graphene oxide to sodium hydroxide of 1:600, stirring, ultrasonic cleaning for 3-4 hours, adding alkene hydrochloride to adjust pH value to neutral, washing 3-5 times with deionized water, centrifuging, dialyzing for 1-2 days using 10000 molecular weight cut off dialysis bag, formulating dialysis solution to reaction liquid of 0.5 mg/mL, oil bath heating at 80 degrees C, stirring, adding 20 mL ethylene glycol, reacting for 8-10 hours, stirring, cooling, dialyzing for 1-2 days using 10000 molecular weight cut off dialysis bag, taking dialysis mixed solution, filtering, and drying.