Issue 28, 2013

Novel ion-imprinted polymer using crown ether as a functional monomer for selective removal of Pb(ii) ions in real environmental water samples

Abstract

A novel Pb(II) ion-imprinted crown ether (Pb(II)-IIP) was prepared by inverse emulsion polymerization using 4-vinylbenzo-18-crown-6 as a functional monomer. Pb(II)-IIP showed higher capacity and selectivity than the non-imprinted crown ether (NIP). The monolayer adsorption capacities of Pb(II)-IIP and NIP for Pb(II) ions were 27.95 and 13.54 mg gāˆ’1, respectively. The relative selectivity coefficients of Pb(II)-IIP for Pb(II)/Zn(II), Pb(II)/Co(II), Pb(II)/Ni(II) and Pb(II)/Cd(II) were 617.79, 500.56, 52.28 and 201.15, respectively. Kinetics studies showed that the adsorption process closely agreed with a pseudo-second-order model. Pb(II)-IIP exhibited good regeneration, and the adsorption capacity of Pb(II)-IIP was stable within the first three cycles without obvious decrease. Moreover, Pb(II)-IIP showed almost 100% removal efficiency for Pb(II) ions in real environmental water samples, indicating that Pb(II)-IIP could have wide application prospects in Pb(II) removal.

Graphical abstract: Novel ion-imprinted polymer using crown ether as a functional monomer for selective removal of Pb(ii) ions in real environmental water samples

Article information

Article type
Paper
Submitted
18 Mar 2013
Accepted
08 May 2013
First published
08 May 2013

J. Mater. Chem. A, 2013,1, 8280-8286

Novel ion-imprinted polymer using crown ether as a functional monomer for selective removal of Pb(II) ions in real environmental water samples

X. Luo, L. Liu, F. Deng and S. Luo, J. Mater. Chem. A, 2013, 1, 8280 DOI: 10.1039/C3TA11098B

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