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Reference type: Journal
Authors: Uygun M, Feyzioglu E, Özçaliskan E, Caka M, Ergen A, Akgöl S, Denizli A
Article Title: New generation ion-imprinted nanocarrier for removal of Cr(VI) from wastewater.
Publication date: 2013
Journal: Journal of Nanoparticle Research
Volume: 15
Issue: (8)
Page numbers: Art No 1833.
DOI: 10.1007/s11051-013-1833-9

Abstract: The purpose of this study was to prepare a novel ion-imprinted nanoparticle to remove Cr(VI) ions from waste water. For this, Cr(VI) ions were complexed with 2-methacryloylamido histidine (MAH) and then Cr(VI)-imprinted poly(HEMAH) nanoparticles were synthesized by surfactant-free emulsion polymerization technique. The templates, Cr(VI) ions, were removed from the nanoparticles using 0.1 M of HNO3 solution. The specific surface area of the Cr(VI)-imprinted poly(HEMAH) nanoparticles was found to be 1,397.85 m2/g, and the particle size was calculated as 155.3 nm. These Cr(VI)-imprinted nanoparticles were used for the adsorption/desorption of Cr(VI) ions from its aqueous solutions. The effects of initial Cr(VI) concentration and medium pH on the Cr(VI) adsorption capacity were also studied. The maximum adsorbed amount of Cr(VI) on the imprinted nanoparticles was found to be 3,830.58 mg/g nanoparticle in pH 4.0. In order to investigate the selectivity of the imprinted nanoparticle, adsorption studies were repeated using Cr(III) ions. The selectivity results demonstrated that Cr(VI)-imprinted poly(HEMAH) nanoparticles showed high affinity for the Cr(VI) ions than Cr(III). The Cr(VI)-imprinted nanoparticles were used several times without decreasing their Cr(VI) adsorption capacities
Template and target information: chromium ion, Cr(VI)
Author keywords: ion imprinting, Cr(VI), Nanocarrier, affinity adsorption


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