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Proceedings Paper

Sonoelectrochemical synthesis of low band gap titania nanotubes for photoelectrochemical generation of hydrogen
Author(s): Yon Sun Sohn; York Smith; K. S. Raja; Vaidyanathan Subramanian; Manoranjan Misra
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Paper Abstract

The sonoelectrochemical method is a highly efficient technique for the synthesis of well ordered and robust titanium dioxide nanotube arrays. Self ordered arrays of TiO2 nanotubes of various diameters and length can be rapidly synthesized under an applied potential of 5-20 V in the presence of organic electrolyte solvents like ethylene glycol. The TiO2 nanotubes prepared in the organic electrolytes and annealed under N2 atmospheres give a TiO2-xCx type of semiconductor materials having a band gap of 2.0 eV. The hybride nanotubes demonstrated promising efficiency in splitting water in the presence of solar light. In addition, the modeling of titania nanotubes using the first principles of the Density Functional Theory (DFT) approach is underway for calculating electronic properties of the TiO2 nanotubular structure. It is envisioned that the DFT modeling will yield valuable information in developing improved titania photoanodes for high efficiency photoelectrochemical splitting of water.

Paper Details

Date Published: 11 September 2007
PDF: 11 pages
Proc. SPIE 6650, Solar Hydrogen and Nanotechnology II, 66500K (11 September 2007); doi: 10.1117/12.740824
Show Author Affiliations
Yon Sun Sohn, Univ. of Nevada, Reno (United States)
York Smith, Univ. of Nevada, Reno (United States)
K. S. Raja, Univ. of Nevada, Reno (United States)
Vaidyanathan Subramanian, Univ. of Nevada, Reno (United States)
Manoranjan Misra, Univ. of Nevada, Reno (United States)

Published in SPIE Proceedings Vol. 6650:
Solar Hydrogen and Nanotechnology II
Jinghua Guo, Editor(s)

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