Anodic TiO2 nanotubes: Influence of top morphology on their photocatalytic performance
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- 作者：Alice Mazzarolo ; Kiyoung Lee ; Antonello Vicenzo ; Patrik Schmuki
- 关键词：TiO2 nanotube ; Photocatalyst ; Anodization ; Morphology ; Water splitting
- 刊名：Electrochemistry Communications
- 出版年：2012
- 出版时间：August, 2012
- 年：2012
- 卷：22
- 期：Complete
- 页码：162-165
- 全文大小：772 K
文摘
The present work investigates the photocatalytic performance of TiO2 nanotubes with different tube top morphologies. Such morphological variations are obtained when growing self-organized nanotube arrays under different (but widely used) anodization conditions. We compare the most typical appearances of tube tops that are: i) ¡°grassy¡± tubes, ii) tubes with initiation layers, iii) doubled anodized and iv) ¡°open¡± tubes. The results show that tubes with an open, defined mouth have a significantly enhanced photocatalytic performance in open circuit, dye degradation experiments as well as when used as a photoanodes for photoelectrochemical water splitting.