Polystyrene fiber adsorption material with surface grafted with beta-cyclodextrin, and preparation and application thereof

The invention relates to a polystyrene fiber adsorption material with surface grafted with beta-cyclodextrin, and preparation and application thereof, belonging to the field of environmental novel functional adsorption materials. The material uses polystyrene fiber as a carrier; the surface of the polystyrene fiber is a layer of polydopamine nanoparticles; and the beta-cyclodextrin is grafted ontodopamine nanoparticles through amido bonds. With the method provided by the invention, a polystyrene fiber material is firstly prepared through electrospinning, and dopamine generates in-situ self-polymerization on the surface of the polystyrene fiber material, so the surface of the polystyrene fiber material is rich in a large amount of active amino groups; meanwhile, chemical crosslinking is generated between carboxylated beta-cyclodextrin and polydopamine on the surface of the polystyrene fiber material; and through formation of the amido bonds, the beta-cyclodextrin is bonded onto an electrospun polystyrene fiber