Elsevier

Journal of Rare Earths

Volume 35, Issue 2, February 2017, Pages 177-186
Journal of Rare Earths

Synthesis of ion imprinted polymers for selective recognition and separation of rare earth metals

https://doi.org/10.1016/S1002-0721(17)60897-4Get rights and content

Abstract

Lanthanide-ion imprinted polymers (L-IIPs) were synthesized by stoichiometric amounts of rare earth ions and the cavities in the polymers were created for the corresponding lanthanide ions. The maximum sorption capacities were estimated to be 125.3, 126.5, 127.6, 128.2 and 129.1 mg/g for Pr, Nd, Sm, Eu and Gd, respectively at pH 6. In the selectivity study, the L-IIPs exhibited good selectivity to the specific rare earth ions in the presence of coexisting cations. The imprinting results were found to be excellent with some rare earth ions over other competitor rare earth ions with the same charges and close ionic radius.

Graphical Abstract

Schiff base lanthanide ion imprinted polymers (IIPs at left) and UV-vis absorption spectra for IIPs bind with lanthanide ions: Schiff base ligand (black line) and L-IIPs show various coloured line (right)

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Foundation item: Project supported by the Ministry of Science, Technology and Innovation, Malaysia (RDU130505, SBK0260-ST-2016)

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