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Open AccessArticle

Silica-Coated Magnetic Nanocomposites for Pb2+ Removal from Aqueous Solution

1
“Coriolan Dragulescu” Institute of Chemistry, Romanian Academy, 24 Mihai Viteazu Bvd., 300223 Timisoara, Romania
2
Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, 6 Vasile Parvan Bvd., 300223 Timisoara, Romania
3
Centre for Energy Research, Konkoly-Thege 29-33, 1121 Budapest, Hungary
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(8), 2726; https://doi.org/10.3390/app10082726
Received: 10 March 2020 / Revised: 7 April 2020 / Accepted: 10 April 2020 / Published: 15 April 2020
(This article belongs to the Special Issue Synthesis and Characterization of Nanoparticles)
Magnetic iron oxide-silica shell nanocomposites with different iron oxide/silica ratio were synthesized and structurally characterized by Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), small-angle neutron scattering, magnetic and N2-sorption studies. The composite that resulted with the best properties in terms of contact surface area and saturation of magnetization was selected for Pb2+ adsorption studies from aqueous media. The material presented good absorption capacity (maximum adsorption capacity 14.9 mg·g−1) comparable with similar materials presented in literature. Its chemico-physical stability and adsorption capacity recommend the nanocomposite as a cheap adsorbent material for lead. View Full-Text
Keywords: magnetic nanoparticles; iron oxide-silica shell nanocomposite; lead adsorption magnetic nanoparticles; iron oxide-silica shell nanocomposite; lead adsorption
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MDPI and ACS Style

Nicola, R.; Costişor, O.; Ciopec, M.; Negrea, A.; Lazău, R.; Ianăşi, C.; Picioruş, E.-M.; Len, A.; Almásy, L.; Szerb, E.I.; Putz, A.-M. Silica-Coated Magnetic Nanocomposites for Pb2+ Removal from Aqueous Solution. Appl. Sci. 2020, 10, 2726.

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