▎ 摘　　要

A novel magnetic molecularly imprinted polymer(Fe3O4 @ GO@ MIP) based on magnetic graphene coated with silicon dioxide layer was synthesized using heated polymerization technique. The MIP was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy(FTIR), thermogravimetric analysis(TGA) and vibrating sample magnetometer(VSM). The results showed that a thermal stability magnetic imprinted layer with the thickness of 55-65 nm was coated steadily on the graphene oxide surface. Adsorption performance of the Fe3O4 @ GO@ MIP was investigated combined with magnetic solid phase extraction (M-SPE) and high-performance liquid chromatography (HPLC) technology, and the results indicated the Fe3O4 @ GO @ MIP possessed higher selectivity towards tetrabromobisphenol A with the maximum adsorption capacity of 16.33 mg/g. The magnetic molecularly imprinted composite material was applied to separation and enrichment of tetrabromobisphenol A in environmental water samples combined with HPLC technology.