In this study we developed

In this study, we developed an effective strategy to greatly improve the equilibrium adsorption capacity of salicylic acid. For this purpose, Biotin-HPDP magnetic poly (glycidyl methacrylate) (PGMA) was firstly prepared by suspension copolymerization of glycidyl methacrylate (GMA) and divinylbenzene (DVB) with the addition of oleic acid-coated Fe3O4 nanoparticles, then hydrophobic polydivinylbenzene (PDVB) networks were interpenetrated in the pores of the magnetic PGMA networks, and the hydrophobic–hydrophobic magnetic PGMA/PDVB IPNs was synthesized according to a typical IPNs technology. After that, an amination reaction was performed for the magnetic PGMA/PDVB IPNs and the first hydrophobic PGMA networks in the IPNs were transformed to hydrophilic poly (methyl acryloyl diethylenetriamine) (PMADETA) networks, and hence a magnetic PMADETA/PDVB IPNs was synthesized. After characterizing the magnetic PMADETA/PDVB IPNs by Fourier transform infrared spectroscopy (FT-IR), N2 adsorption isotherms, vibrating sample magnetometer (VSM) and transmission electron microscopy (TEM), the adsorption property of the magnetic PMADETA/PDVB IPNs was evaluated from aqueous solution by using salicylic acid as the model adsorbate, the equilibrium adsorption and column adsorption were investigated in detail.