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Reference type: Journal
Authors: Liu Y, Liu ZC, Wang Y, Dai JD, Gao J, Xie JM, Yan YS
Article Title: A surface ion-imprinted mesoporous sorbent for separation and determination of Pb(II) ion by flame atomic absorption spectrometry.
Publication date: 2011
Journal: Microchimica Acta
Volume: 172
Issue: (3)
Page numbers: 309-317.
DOI: 10.1007/s00604-010-0491-1

Abstract: A surface-imprinted mesoporous sorbent for Pb(II) ion was synthesized by the post-synthesis method. The material was characterized by transmission electron microscopy and nitrogen adsorption-desorption isotherms. The adsorption by the material was studied by batch experiments with respect to effects of pH value, contact time, kinetics, and adsorption isotherms. Both the pseudo-second-order kinetic model and the Langmuir model fit the experimental data well. Compared to other imprints for Pb(II), to the traditional sorbents and to the non-imprinted polymer, the new sorbent displays fast kinetics and higher selectivity. Pb(II) ion can be desorbed from the imprint with 2 M hydrochloric acid with high efficiency. The sorbent was applied to the selective separation and determination of Pb(II) in water and sediment samples with satisfactory results. Figure Schematic illustration of preparation process of Pb(II)-IIP supported by SBA-15
Template and target information: lead ion, Pb(II)
Author keywords: SBA-15, Surface ion-imprinted, Pb(II), selective separation

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