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Abstract: Microwave heating initiated suspension polymerization was developed to prepare 2-amino-4-nitrophenol (4-NAP) magnetic molecularly imprinted polymers (mag-MIPs) with magnetic wollastonite composites as support, resulting in much shorter polymerization time and better particle morphology. Mag-MIPs were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR) analysis, transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM). Static adsorptive experiment was applied to investigate the adsorption property and selectivity of the mag-MIPs. The results of the equilibrium rebinding experiments and the selective adsorption experiments showed that these imprinted polymers, not only display excellent affinity and selective ability to the 4-NAP, but also exhibited good superparamagnetic to an external magnetic field. Applied as a sorbent, the imprinted sorbent was used for the determination of 4-NAP in a mixture solution by high-performance liquid chromatography (HPLC)
Template and target information: 2-amino-4-nitrophenol, 4-NAP
Author keywords: Surface imprinted polymers, Magnetic wollastonite composites, selective recognition, 2-Amino-4-nitrophenol