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Photoelectrochemical properties of Nb-doped titanium dioxide

✍ Scribed by Anita Trenczek-Zając; Marta Radecka; Mieczysław Rekas

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
819 KB
Volume
399
Category
Article
ISSN
0921-4526

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✦ Synopsis

Nb-doped TiO 2 (0-15 at% Nb) polycrystalline specimens were prepared by sol-gel method. The materials were used as photoanode in photoelectrochemical cell to water splitting. Based on the photocurrent experiments, the effects of Nb concentration on incident photonto-current efficiency (IPCE), flat band potential and overall efficiency of solar energy conversion were discussed. It was found that addition of Nb leads to an increase in solar-to-hydrogen energy efficiency. The maximum energy conversion efficiency has been observed for TiO 2 doped with 1 at% Nb.

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