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Synthesis of iron-doped anatase -TiO2 powders by a particulate sol-gel route

M. CERNEA1,* , C. VALSANGIACOM1, R. TRUSCA2, F. VASILIU1

Affiliation

  1. National Institute of Materials Physics, Str. Atomistilor 105 Bis, RO-77125, P.O. BOX: MG-7, Magurele-Bucharest, Romania
  2. METAV-R&D S. A., P.O. 22, Bucharest, Romania

Abstract

TiO2 anatase doped with 0.5 at%Fe powders were prepared by sol-gel technique. Titanium (IV) butoxide and iron (III) acetylacetonate were used as starting precursors, n-butanol as solvent, acetylacetone is added as a chelating agent and acetic acid to decrease the kinetics of the hydrolysis and condensation of Ti(O-Bun)4. The evolution of the network bonds and the structural characterization of the gel were studied by thermogravimetric analysis (TG), differential thermal analysis (DTA) , differential thermogravimetric analysis (DTG), Fourier transform infrared spectroscopy(FTIR) scanning electron microscopy (SEM) , transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques, respectively. A gelprecusor nanopowder with the mean grain size of about 15-20 nm was obtained. In order to prepare a Fe-doped TiO2 material with the structure of the anatase, a thermal treatment at 450°C, 3 h in air, was fund enough..

Keywords

Anatase-TiO2, Sol-gel, Powder gel characterization.

Submitted at: June 7, 2007
Accepted at: Aug. 18, 2007

Citation

M. CERNEA, C. VALSANGIACOM, R. TRUSCA, F. VASILIU, Synthesis of iron-doped anatase -TiO2 powders by a particulate sol-gel route, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 8, pp. 2648-2652 (2007)