Title of article
Effect of oxygen nonstoichiometry on photo-electrochemical properties of TiO2−x
Author/Authors
M. Radecka، نويسنده , , A. Trenczek-Zajac، نويسنده , , K. Zakrzewska، نويسنده , , M. Rekas، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2007
Pages
6
From page
816
To page
821
Abstract
Polycrystalline TiO2−x pellets were equilibrated at 1220–1420 K in a flow of Ar + 7 vol.% H2 gas mixture. The resulting deviation x from stoichiometric composition of titanium dioxide was determined gravimetrically. X-ray diffractometry revealed coexistence of rutile with TinO2n−1 Magnéli phases. Optical reflectance and photocurrent spectroscopies served as experimental methods of the band gap determination. Polycrystalline TiO2−x were used as photoanodes in a photoelectrochemical cell. The photocurrent response to the applied voltage was studied. It was found that TiO2−x with x ca. 0.006 exhibited the best photoelectrochemical performance.
Keywords
nonstoichiometry , Magn´eli phases , Photoelectrochemical properties , Quantum efficiency , Photoelectrochemical cell , titanium dioxide
Journal title
Journal of Power Sources
Serial Year
2007
Journal title
Journal of Power Sources
Record number
442017
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