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Reference type: Journal
Authors: Fan HT, Sun Y, Tang Q, Li WL, Sun T
Article Title: Selective adsorption of antimony(III) from aqueous solution by ion-imprinted organic-inorganic hybrid sorbent: Kinetics, isotherms and thermodynamics.
Publication date: 2014
Journal: Journal of the Taiwan Institute of Chemical Engineers
Volume: 45
Issue: (5)
Page numbers: 2640-2648.
DOI: 10.1016/j.jtice.2014.07.008
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1876107014002077

Abstract: In this work, a novel Sb(III)-imprinted organic-inorganic hybrid sorbent was synthesized by surface imprinting technique combined with a sol-gel process, and characterized by scanning electron microscopy, Fourier-transform infrared spectroscopy, and N2 adsorption-desorption isotherms. The imprinted sorbent showed the higher capacity and higher selectivity than that of non-imprinted sorbent. The optimal pH range for adsorption of Sb(III) was 3.5-6.5. The imprinted sorbent possessed a rapid kinetics for adsorption of Sb(III) with saturation time of 20 min. After nine adsorption/desorption cycles, no obvious decrease of adsorption capacity was observed. The experimental data showed that the adsorption process obeyed the pseudo-second-order rate mechanism and Langmuir isotherm. The thermodynamic parameters indicated that the adsorption of Sb(III) on the imprinted sorbent was an exothermic and spontaneous process
Template and target information: antimony ion, Sb(III)
Author keywords: Antimony, sol-gel, ion-imprinted, adsorption


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