Abstract: We report on the synthesis of cesium ion-imprinted polymer nanoparticles that were prepared by a precipitation polymerization strategy using dibenzo-24-crown-8 ether as a selective crown ether, methacrylic acid as the functional monomer, ethyleneglycol dimethacrylate as the crosslinker, and AIBN as the radical initiator. The prepared sorbents have a diameter of 50–90 nm and display highly selective binding capability for Cs(I) ion, with rapid adsorption and desorption. The maximum adsorption capacity is 50 mg g-1, and the preconcentration factor is around 100 at pH 9.0. Cesium ion was then determined by flame photometry with a detection limit (3σA) of 0.7 ng mL-1 and with a standard deviation of 0.9 %.
Template and target information: cesium ion, Cs(I)
Author keywords: Ion imprinted polymers, nanobeads, Cs+ ion, Dibenzo-24-crown-8 ether, Flame photometry