Title: Development of Ti-doped iron-polyoxocarbosilane nanocomposite with sensing properties by single-step laser pyrolysis

Authors: I. Morjan, R. Alexandrescu, M. Scarisoreanu, R. Birjega, F. Dumitrache, L. Gavrila, C. Fleaca, I. Soare, V. Ciupina, C.E. Simion, A. Tomescu

Addresses: National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' National Institute for Lasers, Plasma and Radiation Physics, P.O. Box MG 36, R-077125, Bucharest, Romania. ' Ovidius University of Constanta, Bd. Mamaia 124, Constanta, Romania. ' National Institute of Materials Physics, POB MG-7, 077125 Bucharest-Magurele, Romania. ' National Institute of Materials Physics, POB MG-7, 077125 Bucharest-Magurele, Romania

Abstract: Nanoscale metal-polymer nanocomposites present new and often superior physical-chemical properties. In this paper, results concerning the preparation of Ti-doped Fe/Fe₂O₃/polyoxocarbosilane nanocomposites are reported. Nanocomposite powders with different polymer content were prepared by the single-step infrared laser pyrolysis of a gas mixture containing iron pentacarbonyl, hexamethyldisiloxane and titanium tetrachloride. The structural properties of the as-synthesised and calcined (in air, at 500°C) nanopowders were studied using different analytical techniques. In view of potential applications, sensor tests to NO₂ and CO of the pure and Ti-doped thick films were also performed.

Keywords: laser pyrolysis; nanocomposites; iron polyoxocarbosilane; titanium doping; nanotechnology; nanocomposite powders.

DOI: 10.1504/IJNM.2010.034795

International Journal of Nanomanufacturing, 2010 Vol.6 No.1/2/3/4, pp.334 - 349

Published online: 22 Aug 2010 *

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