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Preparation of mesocellular siliceous foam supported lanthanides-sensitive polymer for selective adsorption of lanthanides

Abstract

A ship in bottle nanocomposite was fabricated as a novel adsorbent for lanthanides by immobilizing a lanthanides-sensitive polymer into mesocellular siliceous foam (MCFs). The MCFs was used as a novel carrier for immobilization of the polymer, and the polymer was synthesized via in-situ ring-opening polymerization of 2-methyl-2-oxazoline (MOL) and divinylbenzene (DVB) in the presence of MCFs. The substantially physically modified MCFs-based composite exhibited superior adsorptivity and selectivity to lanthanides due to its exceptional properties, which was employed for lanthanides adsorption from aqueous solution by a facile solid-liquid separation procedure. The adsorption of lanthanides by the composite was systematically studied including adsorption parameters investigation and adsorption mechanism evaluation. The adsorption isotherms and kinetics were also investigated and proved to follow the Langmuir model and pseudo-second-order model. The adsorption thermodynamics study indicated that the adsorption process was thermodynamically favorable, endothermic and spontaneous. The prepared inorganic-organic hybrid composite has superior selectivity and specificity to lanthanides, which can be used for lanthanides enrichment and separation of lanthanides from actinides.

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Publication details

The article was received on 10 Nov 2017, accepted on 07 Feb 2018 and first published on 07 Feb 2018


Article type: Paper
DOI: 10.1039/C7DT04255H
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Preparation of mesocellular siliceous foam supported lanthanides-sensitive polymer for selective adsorption of lanthanides

    W. Li, P. Lin, S. Dai and Y. Shen, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C7DT04255H

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