Composite SiO2—Iron Oxide Materials for Magnetically Intensified Adsorption |
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| Authors: | I. Peleanu M. Zaharescu I. Rau M. Crisan A. Jitianu A. Meghea |
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| Affiliation: | (1) Faculty of Industrial Chemistry, Department of Applied Physical Chemistry and Electrochemistry, POLITEHNICA University of Bucharest, Polizu Street 1, 78126 Bucharest, Romania;(2) Institute of Physical Chemistry, Romanian Academy, Splaiul Independentei 202, Bucharest, Romania;(3) Faculty of Industrial Chemistry, Department of Applied Physical Chemistry and Electrochemistry, POLITEHNICA University of Bucharest, Polizu Street 1, 78126 Bucharest, Romania |
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| Abstract: | Composite SiO2—iron oxide materials were prepared by three experimental procedures. In the first case, the iron oxides were precipitated during a sol-gel process. In the second case, a SiO2 matrix was initially obtained, and the iron oxides were formed by thermal treatment after impregnation of a soluble Fe2+ salt in the previously processed matrix. In the third method, ferrite powders, prepared by wet chemical method, were embedded into a SiO2 based sol-gel matrix. Materials with convenient porosity and nano-sized iron oxide content could be prepared using the mentioned methods. The prepared composite has been tested for arsenic(V) removal. |
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