We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Structural and sensing properties of a novel Fe/Fe<sub>2</sub>O<sub>3</sub>/polyoxocarbosilane core shell nanocomposite powder prepared by laser pyrolysis.
- Authors
Tomescu, A.; Alexandrescu, R.; Morjan, I.; Dumitrache, F.; Gavrila-Florescu, L.; Birjega, R.; Soare, I.; Prodan, G.; Bastl, Z.; Galikova, A.; Pola, J.
- Abstract
This paper reports about the synthesis and characterization of a novel Fe/Fe2O3/polyoxocarbosilane core shell nanocomposite as a material for gas-sensing applications. The nanocomposites (Fe-based nano cores enveloped with polymeric polyoxocarbosilane shells) were prepared by the IR laser co-pyrolysis of iron pentacarbonyl and hexamethyldisiloxane. The iron-based cores become superficially oxidized in atmosphere. The morphologies, chemical content and thermal behavior were studied by different analytical techniques. The sensing properties of the polymer-poor nanocomposite thick films were tested by measuring the variation of the electrical resistance in presence of CO and CH4, at a working temperature of 450 °C. Preliminary results indicate that for CO toxic gas, an n–p transitional character of the semiconducting iron oxide appears in humid relatively to dry air.
- Subjects
COMPOSITE materials; PYROLYSIS; THERMAL properties of metals; IRON oxides; THICK films
- Publication
Journal of Materials Science, 2007, Vol 42, Issue 5, p1838
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-006-0956-0