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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 1/2015

01.04.2015 | Original Paper

The removal of Hg(II) ions from aqueous solutions by using thiol-functionalized cobalt ferrite magnetic nanoparticles

verfasst von: Branka Viltužnik, Aleksandra Lobnik, Aljoša Košak

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 1/2015

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Abstract

Mercaptopropyl-coated cobalt ferrite (CoFe2O4) magnetic nanoparticles synthesized using the co-precipitation method and surface modified using the Stöber method were investigated as a convenient and effective adsorbent for aqueous Hg2+ ions. The surfaces of the colloidal-CoFe2O4 nanoparticles were functionalized with tetraethoxysilane and 3-mercaptopropyltrimethoxysilane via the co-condensation process. The characteristics of these particles were assessed at different stages of the production process using X-ray diffraction, transmission electron microscopy, Fourier-transform infrared spectroscopy, and vibrating-sample magnetometry. The adsorption capacity of the mercaptopropyl-coated CoFe2O4 nanoparticles with respect to the aqueous Hg2+ ions was evaluated using atomic absorption spectrometer. It was found that the pH value of the model solution, the mass of the adsorbent, the temperature and the time of the adsorption significantly influence the sorption of Hg2+ ions on the mercaptopropyl-coated cobalt ferrite nanoparticles. The maximum removal efficiency of the aqueous Hg2+ ions was 97 % at room temperature and neutral pH value.
Vorheriger Artikel Characterization and evaluation of silica particles coated by PVP and albumin for effective bilirubin removal
Nächster Artikel Electrospun mullite fibers from the sol–gel precursor

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Metadaten
Titel
The removal of Hg(II) ions from aqueous solutions by using thiol-functionalized cobalt ferrite magnetic nanoparticles
verfasst von
Branka Viltužnik
Aleksandra Lobnik
Aljoša Košak
Publikationsdatum
01.04.2015
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 1/2015
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-014-3596-x

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