Abstract: A novel magnetic Zn(II) ion-imprinted polymer was prepared by surface ion-imprinted technique by using magnetic Fe3O4@SiO2 microspheres as supporter, methacrylic acid and salicylaldoxime as monomers, ethylene glycol dimethacrylate as crosslinker. The products were characterized by FT-IR, XPS, VSM and SEM. The adsorption experiments showed that the imprinted polymer was employed successfully in comparison with non-imprinted polymer. When the temperature was in a range of 291 K to 297 K, the maximum adsorption was about 52.69 mg g-1 with an optimal pH 6.0 for an equilibrium time of 40 min. The imprinted polymer was possessed of high selectivity and specific recognition toward Zn(II). The Langmuir adsorption model was more favorable than the Freundlich or the Temkin adsorption model. Thermodynamic experiment showed that the adsorption was a spontaneous and endothermic process for Zn(II). The mechanism for Zn(II) adsorption on the imprinted polymer was investigated
Author keywords: Molecular imprinting, Adsorption, magnetic polymers, selectivity, Zinc ion