Novel Carbon-Doped TiO2 Nanotube Arrays with High Aspect Ratios for Efficient Solar Water Splitting
Top Cited Papers
- 10 December 2005
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 6 (1) , 24-28
- https://doi.org/10.1021/nl051807y
Abstract
The photocatalytic splitting of water into hydrogen and oxygen using solar light is a potentially clean and renewable source for hydrogen fuel. 1,2 There has been extensive investigation into metal-oxide semiconductors such as TiO2, WO3, and Fe2O3, which can be used as photoanodes in thin-film form. 3-5 Of the materials being developed for photoanodes, TiO2 remains one of the most promising because of its low cost, chemical inertness, and photostability. 6 However, the widespread technological use of TiO2 is hindered by its low utilization of solar energy in the visible region. In this study, we report the preparation of vertically grown carbon-doped TiO2 (TiO2-xCx) nanotube arrays with high aspect ratios for maximizing the photocleavage of water under white-light irradiation. The synthesized TiO2-xCx nanotube arrays showed much higher photocurrent densities and more efficient water splitting under visible-light illumination (> 420 nm) than pure TiO2 nanotube arrays. The total photocurrent was more than 20 times higher than that with a P-25 nanoparticulate film under white-light illumination.Keywords
This publication has 16 references indexed in Scilit:
- Titanium oxide nanotubes prepared in phosphate electrolytesPublished by Elsevier ,2005
- Comment on "Efficient Photochemical Water Splitting by a Chemically Modified n-TiO 2 " (II)Science, 2003
- Comment on "Efficient Photochemical Water Splitting by a Chemically Modified n-TiO 2 " (I)Science, 2003
- Comment on "Efficient Photochemical Water Splitting by a Chemically Modified n-TiO 2 " (III)Science, 2003
- Enhanced Nitrogen Doping in TiO2 NanoparticlesNano Letters, 2003
- The Origin of Aluminum Flocs in Polluted StreamsScience, 2002
- Visible-Light Photocatalysis in Nitrogen-Doped Titanium OxidesScience, 2001
- Greatly Enhanced Sub‐Bandgap Photocurrent in Porous GaP PhotoanodesJournal of the Electrochemical Society, 1996
- Hydrogen Production under Sunlight with an Electrochemical PhotocellJournal of the Electrochemical Society, 1975
- Electrochemical Photolysis of Water at a Semiconductor ElectrodeNature, 1972