TiO 2 -based nanopowders obtained from different Ti-alkoxides

M. Crişan, Ana Brăileanu, M. Rǎileanu, D. Crişan, V. S. Teodorescu, R. Bîrjega, V. E. Marinescu, J. Madarász, G. Pokol

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27 Citations (Scopus)


Pure TiO 2 and S-doped TiO 2 sol-gel nanopowders were prepared by controlled hydrolysis-condensation of titanium alkoxides. The influence of different Ti-alkoxides (tetraethyl-, tetraisopropyl- and tetrabutyl-orthotitanate) used in obtaining TiO 2 porous materials in similar conditions (water/alkoxide ratio, solvent/alkoxide ratio, pH and temperature of reaction) has been investigated. The relationship between the synthesis conditions and the properties of titania nanosized powders, such as thermal stability, phase composition, crystallinity, morphology and size of particles, BET surface area and the influence of dopant was investigated. The nature of the alkyl group strongly influences the main characteristics of the obtained oxide powders, fact which is pointed out by thermal analysis, X-ray diffraction, TEM and BET surface area measurements.

Original languageEnglish
Pages (from-to)171-176
Number of pages6
JournalJournal of Thermal Analysis and Calorimetry
Issue number1
Publication statusPublished - Apr 2007


  • S-doped TiO
  • Sol-gel method
  • Thermal analysis
  • TiO nanopowders

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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    Crişan, M., Brăileanu, A., Rǎileanu, M., Crişan, D., Teodorescu, V. S., Bîrjega, R., Marinescu, V. E., Madarász, J., & Pokol, G. (2007). TiO 2 -based nanopowders obtained from different Ti-alkoxides Journal of Thermal Analysis and Calorimetry, 88(1), 171-176. https://doi.org/10.1007/s10973-006-8125-x