▎ 摘　　要

NOVELTY - Self-supporting reduced graphene oxide nanofiltration membrane preparation uniformly coating a polymer solution on a flat plate, and then drying to obtain a polymer substrate. The graphene oxide slurry is uniformly coated on the polymer substrate, where the graphene oxide layer on the polymer substrate is removed after drying to obtain self-supporting graphite oxide film. The self-supporting graphene oxide film is reduced to obtain the self-supporting reduced graphene oxide nanofiltration membrane. USE - Method for preparing self-supporting reduced graphene oxide nanofiltration membrane used in pollutant retention and water treatment, preferably sulfamethoxazole (claimed). ADVANTAGE - The method prepares the self-supporting reduced graphene oxide nanofiltration membrane in a simple, cost-effective and eco-friendly manner with small molecular substances such as antibiotics, and broad development prospects in the water treatment field.