▎ 摘　　要

NOVELTY - A graphene oxide hybrid film for removing copper ion in water is prepared by (1) adding silane coupling agent N- beta -(aminoethyl)- gamma -aminopropyltrimethoxysilane (KH-792) to silane coupling 3-glycidyl etheroxypropyltrimethoxysilane (WD-60) in inert atmosphere or air at 20-100 degrees C in which weight ratio of KH-792 to WD-60 is 1:0.1-10, adding solvent to dissolve to-sol gel reaction for 1-48 hours, and obtaining silane coupling agent mixture; (2) dissolving graphene oxide (GO) in water, stirring for 1-48 hours, ultrasonically dispersing for 0.1-2 hours to obtain uniform solution, and adding into prepared silane coupling agent in mixture at mass ratio with respect to WD-60 of 1:0.1-10, stirring for 1-48 hours to obtain GO-silicon (Si) hybrid precursor containing silicon, and (3) adding to certain amount of polyvinyl alcohol (PVA) aqueous solution in mass ratio of PVA to WD-60 of 1:0.1-10, continuously reacting for 1-24 hours and standing and defoaming to obtain the coating liquid GO-Si. USE - Preparation of graphene oxide hybrid film for removing copper ion in water. ADVANTAGE - The method prepares graphene oxide hybrid film with large copper ion absorbing amount, high removing efficiency, fast rate, and has adsorption performance that can be adjusted. DETAILED DESCRIPTION - A graphene oxide hybrid film for removing copper ion in water is prepared by (1) adding silane coupling agent N- beta -(aminoethyl)- gamma -aminopropyltrimethoxysilane (KH-792) to silane coupling 3-glycidyl etheroxypropyltrimethoxysilane (WD-60) in inert atmosphere or air at 20-100 degrees C in which weight ratio of KH-792 to WD-60 is 1:0.1-10, adding solvent to dissolve to-sol gel reaction for 1-48 hours, and obtaining silane coupling agent mixture; (2) dissolving graphene oxide (GO) in water, stirring for 1-48 hours, ultrasonically dispersing for 0.1-2 hours to obtain uniform solution, and adding into prepared silane coupling agent in mixture at mass ratio with respect to WD-60 of 1:0.1-10, stirring for 1-48 hours to obtain GO-silicon (Si) hybrid precursor containing silicon, (3) adding to certain amount of polyvinyl alcohol (PVA) aqueous solution in mass ratio of PVA to WD-60 of 1:0.1-10, continuously reacting for 1-24 hours and standing and defoaming to obtain the coating liquid GO-Si, (4) standing GO-Si coating liquid directly after coating to obtain the membrane on the support, placing for 1-48 hours under room temperature, separating the membrane from the support, and drying the membrane for 1-48 hours at 20-100 degrees C, cooling to obtain graphene oxide hybrid film, or directly coating GO-Si coating on supporting body, standing and de-foaming to obtain the membrane under 10-100 degrees C, drying for 1-48 hours on support, and cooling to obtain graphene oxide hybrid film.