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

• Published in: Journal of Optoelectronics and Advanced Materials Vol. 9; no. 8; pp. 2648 - 2652
• Main Authors: Cernea, M, Valsangiacom, C, Trusca, R, Vasiliu, F
• Format: Journal Article
• Language: English
• Published: 01.08.2007
• ISSN: 1454-4164

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 deg C, 3 h in air, was fund enough.