Synthesis and properties of sol-gel submicron silica powders doped with partly oxidized iron particles
| Autor: | B. Mazurek, Beata Borak, Simo-Pekka Hannula, Annukka Aaltonen, Krzysztof Maruszewski, Marja Oja, A. Baszczuk, Marek Jasiorski, S. Laskowski, Outi Söderberg, Oleg Heczko |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Silica gel Iron oxide Mineralogy General Chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Biomaterials Metal chemistry.chemical_compound chemistry Chemical engineering Transition metal visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Particle Crystallite Hybrid material Sol-gel |
| Zdroj: | Journal of Sol-Gel Science and Technology. 41:185-190 |
| ISSN: | 1573-4846 0928-0707 |
| DOI: | 10.1007/s10971-006-0523-9 |
| Popis: | Magnetic powders based on metallic iron crystallites encapsulated in submicron-sized spherical silica particles have been obtained and investigated. The metallic iron clusters have been produced by the exploding wire method. The silica shells have been prepared via the modified sol-gel Stober method and the metallic particles have been entrapped by occlusion during the silica powder formation. The entrapped iron particles are partially oxidized due to the nature of the synthetic methods employed. The obtained hybrid materials have been investigated by electron microscopy, X-ray diffraction, magnetic and ζ-potential techniques. Such materials can be employed in such applications as e.g. magnetically-controlled drug vectors or electromagnetic field-shielding. |
| Databáze: | OpenAIRE |
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