Crystal structure and chemical composition of titanium oxide nanopowders.

Autor: Vykhodets, V., Kurennykh, T., Ermakov, A., Beketov, I., Bagazeev, A., Gaviko, V., Kuznetsov, M., Medvedev, A., Uimin, M., Shabanova, K., Shchegoleva, N.
Zdroj: Nanotechnologies in Russia; Jul2013, Vol. 8 Issue 7/8, p482-488, 7p
Abstrakt: Titanium oxide nanopowders synthesized by different techniques are investigated. X-ray phase analysis, nuclear reaction analysis, and X-ray photo-electron spectroscopy are used to characterize the powders. All powders contain only crystalline rutile and anatase phases. The powders received by the chemical method have a stoichiometry TiO composition. The powders produced by gas condensation and the laser-induced evaporation of a ceramic target have an oxygen-deficient composition when compared with the TiO formula. The results are discussed in a model assuming that oxygen-deficient structures are formed on oxide particle surfaces if the high nonequilibrium technologies are used for nanopowder production. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index