Visible Light Activity and Photoelectrochemical Properties of Nitrogen-Doped TiO<sub>2</sub>
S. SakthivelInstitut für Anorganische Chemie der Universität Erlangen-Nürnberg, Egerlandstr.1, D-91058 Erlangen, Germany, and Department of Chemical Technology, Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, PolandMarcin JanczarekInstitut für Anorganische Chemie der Universität Erlangen-Nürnberg, Egerlandstr.1, D-91058 Erlangen, Germany, and Department of Chemical Technology, Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, PolandHorst KischInstitut für Anorganische Chemie der Universität Erlangen-Nürnberg, Egerlandstr.1, D-91058 Erlangen, Germany, and Department of Chemical Technology, Gdansk University of Technology, ul. Narutowicza 11/12, 80-952 Gdansk, Poland
2004en
ABI
Аннотация
Nitrogen-doped titania photocatalysts were prepared from titanium tetraisopropoxide or titanium tetrachloride and thiourea. The yellow powders obtained after calcination at 400−600 °C photocatalyze the mineralization of 4-chlorophenol by visible light (λ ≥ 455 nm). Different from previously published data these materials do not contain sulfur but instead nitrogen as the doping component inducing visible light photocatalysis. The measured band gap narrowing of 40−80 meV and the anodic shift of the quasi Fermi potential of 40−90 mV are in agreement with recent results on nitrogen-doped titania.
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