▎ 摘　　要

NOVELTY - Preparation polyamide-6/graphene oxide/iron-based metal-organic framework composite material, involves preparing polyamide/graphene oxide spinning film by dissolving polyamide-6 in formic acid, adding graphene oxide and ferric nitrate, heating and stirring, and blending into composite spinning film, preparing iron-based metal organic framework precursor solution using iron-based metal organic framework material as amine-MIL-53(iron), adding 2-aminoterephthalic acid and ferric nitrate, into 20 ml of N,N-dimethylformaldehyde and fully dissolving, preparing in-situ growth of iron-based metal-organic framework crystals on polyamide-6/graphene oxide fiber membranes by cutting the composite spinning film into small pieces and immersing into the metal-organic framework precursor solution, sealing reactor and putting in an oven at 150degrees Celsius for 6 hours, taking out the composite spinning membrane, washing with methanol for 3-6 times, and vacuum-drying at 100degrees Celsius for 8 hours. USE - Preparation polyamide-6/graphene oxide/iron-based metal-organic framework composite material used for adsorbing heavy metal ions in sewage or greenhouse gases, such as carbon dioxide in air. ADVANTAGE - The method combines polymer electrospinning with in-situ growth of iron-metal organic frameworks, can be used to produce composites with excellent adsorption properties. DETAILED DESCRIPTION - Preparation polyamide-6/graphene oxide/iron-based metal-organic framework composite material, involves preparing polyamide/graphene oxide spinning membrane by dissolving polyamide-6 in formic acid, adding graphene oxide and ferric nitrate, heating and stirring to fully dissolve and uniformly disperse, leaving still for 12 hours at room temperature and blending into composite spinning film by electrospinning machine, where the content of polyamide-6 and formic acid is 14-18 wt.%, the content of graphene oxide and polyamide-6 is 0.3-0.5 wt.% and the content of ferric nitrate and polyamide-6 is 1.5-2.5 wt.%, preparing iron-based metal organic framework precursor solution using iron-based metal organic framework material as amine-MIL-53(iron), adding 2-aminoterephthalic acid and ferric nitrate, in the molar ratio of 1:1 into 20 ml of N,N-dimethylformaldehyde and fully dissolving, preparing in-situ growth of iron-based metal-organic framework crystals on polyamide-6/graphene oxide fiber membranes by cutting the composite spinning film into small pieces and immersing into the metal-organic framework precursor solution, sealing reactor and putting in an oven at 150degrees Celsius for 6 hours, taking out the composite spinning membrane, washing with methanol for 3-6 times, and vacuum-drying at 100degrees Celsius for 8 hours.