Abstract: The ionic imprinted polymer (IIP) of uranyl ion (UO22+) was synthesized by the formation of binary complexes of UO22+ with 1,3-dioxo-1,3-diphenylpropan-2-yl methacrylate (DBM-MAA) as functional monomer followed by thermal copolymerization with ethylene glycol dimethacrylate (EGDMA) as cross-linking monomer in the presence of 2,2'-azobisisobutyronitrile (AIBN) as initiator and 1,4-dioxane as porogenic solvent. 50 mmol/L HCl solution was used to leach out UO22+ ions from the polymer. The IIP formed with 1:3 molar ratio of UO22+ to DBM-MAA showed better enrichment of uranyl ion from dilute aqueous solution than others and hence was chosen for detailed studies. The maximum adsorption capaci(NH4)4[UO2(CO3)3]sub>)3] solution was 9.4 mg U/g. The prepared IIP could selectively separate UO22+ from other metal ions, such as Li+, Na+, K+ and Rb+.
Template and target information: uranium, uranyl ion, UO22+