Reference type: Journal
Authors: Meng MJ, Meng XG, Liu Y, Liu ZC, Han J, Wang Y, Luo M, Chen R, Ni L, Yan YS
Article Title: An ion-imprinted functionalized SBA-15 adsorbent synthesized by surface imprinting technique via reversible addition-fragmentation chain transfer polymerization for selective removal of Ce(III) from aqueous solution.
Publication date: 2014
Journal: Journal of Hazardous Materials
Volume: 278
Page numbers: 134-143.
DOI: 10.1016/j.jhazmat.2014.06.002
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0304389414004592

Abstract: A novel Ce(III) ion-imprinted polymer (Ce(III)-IIP) has been prepared by surface imprinting technique with reversible addition-fragmentation chain transfer (RAFT) polymerization based on support matrix of SBA-15. The prepared adsorbent is characterized by FT-IR, XRD, SEM, TEM, nitrogen adsorption-desorption, GPC, and TGA. The results suggest that the surface imprinted polymer synthesized by RAFT is a thin layer. For adsorption experiments, Ce(III)-IIP is investigated to remove Ce(III) by column study at different flow rates, initial metal ion concentrations, and adsorption temperature. The dynamic kinetics analyses reveal that the overall adsorption process is successfully fitted with the pseudo-first-order kinetic model and the equilibrium time was 60 min. Meanwhile, the experimental data is in good agreement with Thomas model. Ce(III)-IIP has the excellent selectivity and regenerate property. Meanwhile, the proposed method has been successfully applied in the removal of Ce(III) in natural water samples with satisfactory results. All the results suggest that Ce(III)-IIP could be used as an excellent adsorbent for efficient removal of Ce(III) from aqueous solution
Template and target information: cerium ion, Ce(III)
Author keywords: Surface imprinting technique, SBA-15, Reversible addition-fragmentation chain transfer (RAFT) polymerization, Column study