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A novel ion-imprinted polymer (IIP),which was applied for the selective adsorption of Cr(VI) anion from aqueous solution,has been prepared through a thermally induced free radical polymerization.The IIP was prepared using 4-vinyl pyridine (4-VP) and N,N-Diethylaminoethyl methacrylate (DEAEM) as functional monomers,ethyleneglycol dimethacrylate (EGDMA) and 2,2-azoisobisbutyronitrile (AIBN) as cross-linker and initiator.The prepared IIPs were characterized by the Fourier Transforms infrared Spectroscopy (FTIR).The effects of pH,initial concentration of Cr(VI) anion aqueous solution,temperature and time were investigated.Under the optimum adsorption conditions,the thermodynamic and kinetic properties of adsorption process were studied.The fast adsorption behaviors (the adsorption equilibrium time within 3min) of IIPs were found to follow the pseudo-second-order equation and the Langmuir isotherm model.The maximum adsorption capacity was 286.56 mg/g at the initial Cr(VI) concentration of 1000mg/L and the selectivity factor of Cr(VI)/Cu(II) was 135.78.In addition,the thermodynamic parameters calculated from adsorption data indicated that the adsorption process was carried out spontaneously.