Oxide Nanotubes on Ti鈭扲u Alloys: Strongly Enhanced and Stable Photoelectrochemical Activity for Water Splitting

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• 作者：Poulomi Roy ; Chittaranjan Das ; Kiyoung Lee ; Robert Hahn ; Tobias Ruff ; Matthias Moll ; Patrik Schmuki
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：April 20, 2011
• 年：2011
• 卷：133
• 期：15
• 页码：5629-5631
• 全文大小：728K
• 年卷期：v.133,no.15(April 20, 2011)
• ISSN：1520-5126

文摘

The present work shows a significant enhancement of the photoelectrochemical water-splitting performance of anodic TiO₂ nanotube layers grown on low concentration (0.01鈭?.2 at% Ru) Ti鈭扲u alloys. Under optimized preparation conditions (0.05 at% Ru, 450 掳C annealing) the water splitting rate of the oxide tubes could be 6-fold increased. Moreover, the beneficial effect is very stable with illumination time; this is in contrast to other typical doping approaches of TiO₂.