▎ 摘　　要

NOVELTY - Graphene oxide-titanium dioxide-silver doped piperazine polyamide composite nanofiltration membrane comprises an organic ultrafiltration membrane support and an organic functional layer arranged on the organic ultrafiltration membrane support. The organic functional layer is formed on the organic ultrafiltration membrane support by using the aqueous solution and the organic phase solution as raw materials through interfacial polymerization. The aqueous monomer in the aqueous solution is piperazine, and the aqueous monomer solution contains an acid acceptor and graphene oxide loaded with titanium dioxide and silver by a hydrothermal method, and the acid acceptor is a polyamine. The organic phase monomer in the organic phase solution is trimesoyl chloride. The polyamine is ethylenediamine. USE - The graphene oxide-titanium dioxide-silver doped piperazine polyamide composite nanofiltration membrane is useful in biological engineering, medicine, metallurgy, water treatment, and electronic fields. ADVANTAGE - The graphene oxide-titanium dioxide-silver-doped piperazine polyamide composite nano-filtration membrane has good and balanced pure water flux, retention rate and antibacterial performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of graphene oxide titanium dioxide-silver-doped piperazine polyamide composite nanofiltration membrane.