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Composition Influence on the Properties of Titanium-Doped Gamma Iron Oxide Nanoparticles Prepared by Laser Pyrolysis Method

Published online by Cambridge University Press:  01 February 2011

Ion Morjan
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Rodica Alexandrescu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Florian Dumitrache
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Ion Sandu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Monica Scarisoreanu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Lavinia Albu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Iuliana Soare
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Ion Voicu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Bohumil David
Affiliation:
Institute of Physics of Materials, AS CR, Brno, Czech Republic
Oldrich Schneeweiss
Affiliation:
Institute of Physics of Materials, AS CR, Brno, Czech Republic
Claudiu Fleaca
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Ernest Popovici
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Victor Ciupina
Affiliation:
Ovidius University, Constanta, Romania
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Abstract

The aim of this work is the structural and sensing characterization of titanium-doped gamma iron oxide nanocomposites. These nanopowder materials were synthesized by the laser pyrolysis technique. It is based on the resonance between the emission of a CW CO2 laser line and the infrared absorption band of a gas (vapour) precursor. Basically, sensitised iron pentacarbonyl and titanium tetrachloride-based mixtures were used as gas-phase reactants. The compositional characterization of the synthesized nanostructures was performed by means of different analytical techniques. Introducing Ti in the Fe2O3 network in small quantities (< 1 %) seems to have little influence on titanium doped powder morphology (mean grain size ∼ 5nm) but increases the sensitivity of titanium doped iron oxide nanopowders with more then 20 % relatively to pure maghemite.

Type
Research Article
Copyright
Copyright © Materials Research Society 2005

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Composition Influence on the Properties of Titanium-Doped Gamma Iron Oxide Nanoparticles Prepared by Laser Pyrolysis Method
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