Study on the Magnetic Molecularly Imprinted Materials for Removing the Perfluorooctane Sulfonate (PFOS) in Water

Molecular imprinting has been considered as one of the most useful techniques for the preparation of specific receptors. In this study, a novel molecularly imprinted material (MIP) has been developed by combining PFOS as the template with soluble polybenzimidazole which wrapped over the surface of ferroferric oxide as the carrier. Kinetics experimental showed MIP had a sorption amount of 117.6mg/g for PFOS, high than 74.6mg/g of the none-imprinted polymer adsorbents（NIP）. Additionally, in the competitive environment with other pollutants, the sorption amount of PFOS for MIP is greater than NIP, due to the electrostatic interaction in recognizing the target compound.