▎ 摘　　要

NOVELTY - Preparation of aminated graphene oxide and graphite-phase carbon nitride composite modified membrane material includes mixing aminated graphene oxide (NGO) and graphite-phase carbon nitride (SLg-C3N4) of monoatomic nanosheet layer to obtain SLg-C3N4/NGO heterojunction dispersion comprising 1-5 wt.% NGO; activating polysulfone raw film, adding SLg-C3N4/NGO heterojunction dispersion, applying pressure of 0.1-0.2 MPa on one side of polysulfone film, loading uniformly 0.039-0.156 g/cm2 SLg-C3N4/NGO heterojunction dispersion on side surface of polysulfone raw film; immersing in aqueous solution of acyl chloride monomer, taking out and drying, immersing in amine monomer organic phase solution, polymerizing interfacially to obtain polyamide skin layer, heat-treating at 50-90 degrees C and washing. USE - The method is preparation of aminated graphene oxide and graphite-phase carbon nitride composite modified membrane material for water treatment (claimed). ADVANTAGE - The method prepares composite modified membrane material adopting NGO and SLg-C3N4 as modifiers being combined with polysulfone raw film to form polyamide skin layer. It obtains improved hydrophilic property of membrane surface, lowered forbidden band width value of membrane functional layer, and excellent visible light catalytic ability and organic catalytic degradation ability. It also obtains improved membrane flux and anti-pollution ability, and low cost.