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Abstract: A novel micro-pore structured ion imprinted polymer (Pb-IIPs) was synthesized by bulk polymerization technique with Pb(NO3)2 as template ion, 8-hydrixyquinoline (oxine) as complex reagent, and styrene, ethylene glycol dime-thacrylate (EGDMA) or AIBN as a monomer, cross-linker and initiator for the fast and selective adsorption of trace Pb(II) ion in aqueous solution. The surface morphology and structure of Pb-IIPs and NIPs was characterized by FTIR and SEM. The influence from the concentration of Pb2+ , p H value and the adsorption time on the adsorption capacity of polymers were investigated by FASS. The results showed that the optimal experimental conditions of adsorption was as follows: the concentration of Pb2+ was 10 mg/L, pH value was set as 56, and the adsorption time was 4 h. Under the above conditions, the Pb-IIPs showed good adsorption and selectivity, and the maximal adsorption capacity of imprinted polymer was about 2.86 mg/g, 3.95 times higher than that of non-imprinted polymer. The adsorption capacity of the imprinted polymer exhibited good reproducibility even after recycle for more than five times.
Template and target information: lead ion
Author keywords: ion imprinted polymer, lead ions, adsorption, FASS