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Reference type: Journal
Authors: Zhang HJ, Liang HL, Chen QD, Shen XH
Article Title: Synthesis of a new ionic imprinted polymer for the extraction of uranium from seawater.
Publication date: 2013
Journal: Journal of Radioanalytical and Nuclear Chemistry
Volume: 298
Issue: (3)
Page numbers: 1705-1712.
DOI: 10.1007/s10967-013-2612-x

Abstract: The ionic imprinted polymer (IIP) of uranyl ion (UO2 2+) as the template was synthesized by the formation of binary complexes of UO2 2+ with 2,4-dioxopentan-3-yl methacrylate as functional monomer followed by thermal copolymerization with ethylene glycol dimethacrylate as cross-linking monomer in the presence of 2,2'-azobisisobutyronitrile as initiator and 1,4-dioxane as porogenic solvent. 50 mmol L-1 HCl solution was used to leach out UO2 2+ ions from the IIP. Similarly, the control polymer was prepared under identical experimental conditions without using UO2 2+ ions. The above synthesized polymers were characterized by infra-red spectroscopy, thermo-gravimetric analysis and Barrett-Emmett-Teller surface area measurement. The maximum adsorption capacities of IIP and CP in (NH4)4[UO2(CO3)3] solution were 15.3 and 11.2 mg U g-1, respectively. The kinetics of adsorption followed a pseudo-second-order rate equation. The prepared IIP was successfully used to extract uranium from real seawater sample
Template and target information: uranyl ion, UO22+
Author keywords: imprinted polymer, uranyl ion, (NH4)4[UO2(CO3)3], seawater

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