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.

Anodic TiO2 nanotubes: Influence of top morphology on their photocatalytic performance

MAZZAROLO, ALICE;VICENZO, ANTONELLO;
2012-01-01

Abstract

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.
TiO2 nanotube; photocatalyst; anodization; morphology; water splitting
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/656064
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