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Vol. 27 No. 4 (2015): Vol 27 Issue 4

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Modification of Titanium Oxide Films by Ferric Ions in Hydrothermal Conditions and their Photo-Electrochemical Properties

https://doi.org/10.14233/ajchem.2015.18627
Altay A. Seitmagzimov
M. Auezov South-Kazakhstan State University, Tauke Khan, 5, Shymkent 160012, Kazakhstan
Galina M. Seitmagzimova
M. Auezov South-Kazakhstan State University, Tauke Khan, 5, Shymkent 160012, Kazakhstan

Corresponding Author(s) : Galina M. Seitmagzimova

galinaseit@mail.ru

Asian Journal of Chemistry, Vol. 27 No. 4 (2015): Vol 27 Issue 4

Abstract

Anodic titanium oxide films were doped using ferric ions in hydrothermal conditions. Doping is accompanied by a full change in the structure and morphology of the surface of titanium oxide while anatase is established radiographically. Deep redshift in optical spectrum of titanium oxide takes place. This is accompanied by anodic photo-current sharply increasing 2.5 times under visible lighting with simultaneous decrease of current characteristics under ultraviolet light. This is explained by the synergistic effect of Fe-Ti compound formed on the surface of the anodic oxide. Firstly, deep acceptor levels of Fe3+ in titanium oxide energy band gap are created while dopant conductivity becomes prevalent and titanium oxide's own conductivity partially leveled. Secondly, its proper layer of ferric oxide is formed.

Keywords

Titanium oxide Conductivity Spectrum Anodic photo-current Width of energy band gap Doping
A. Seitmagzimov, A., & M. Seitmagzimova, G. (2015). Modification of Titanium Oxide Films by Ferric Ions in Hydrothermal Conditions and their Photo-Electrochemical Properties. Asian Journal of Chemistry, 27(4), 1521–1524. https://doi.org/10.14233/ajchem.2015.18627
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