▎ 摘　　要

NOVELTY - A magnetic graphene collagen composite adsorbent material comprises graphene component with adsorption function, magnetic iron oxide nanoparticles component, magnetic nanoparticles for loading, and cross-linked solidified graphene collagen monomer component. The mass ratio of magnetic nanoparticles to collagen is 1:1-4:1. The mass ratio of graphene to collagen is 1:1-3:1. USE - Magnetic graphene collagen composite adsorbent material (claimed). ADVANTAGE - The magnetic graphene collagen composite adsorbent material has high adsorption capacity for anionic dyes, high separating and recycling effect and can solve the problem of the agglomeration of graphene in the removal of water pollutants by combining graphene and collagen. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of magnetic graphene collagen composite adsorbent material, which involves uniformly dispersing magnetic iron oxide nanoparticles in water, adding appropriate amount of polyethyleneimine, stirring and dispersing for 1-2 hours to form functional magnetic nanoparticles dispersion (A), uniformly dispersing graphene oxide material in water, adding thiosemicarbazide, stirring and dispersing for 1-2 hours to form functionalized graphene oxide dispersion (B), dissolving amount of collagen fibers in a certain concentration of acetic acid solution to form collagen solution, adding magnetic nanoparticles dispersion (A) and graphene oxide dispersion (B) to collagen solution, stirring for 2-4 hours, adding glutaraldehyde, stir for 4-6 hours, washing resulting mixture repeatedly with distilled water, centrifuging, and freeze drying resulting black solid with a freezer for 24 hours.