▎ 摘　　要

NOVELTY - Covalently cross-linked graphene oxide nanofiltration membrane comprises a single graphene oxide material without any exogenous crosslinking agent participating in crosslinking. The interception objects are small neutral molecules with a molecular weight above 200 and inorganic salt ions. USE - The covalent cross-linking graphene oxide nano-filtration membrane is useful in nanofiltration, reverse osmosis, forward osmosis, ultrafiltration, pervaporation, and oil-water separation. ADVANTAGE - The covalent cross-linked graphene oxide nano-filtration membrane: is simple and easy to operate; and has strong promotion and strong performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of the covalent cross-linked graphene oxide nano-filtration membrane.