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Anodically Fabricated Sr-doped TiO2 Nanotube Arrays for Photoelectrochemical Water Splitting Applications

Published online by Cambridge University Press:  22 June 2011

Hoda A. Hamedani ,
Nageh K. Allam ,
Hamid Garmestani  and
Mostafa A. El-Sayed
Hoda A. Hamedani
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, U.S.A.
Nageh K. Allam
Affiliation:
Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, U.S.A.
Hamid Garmestani
Affiliation:
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, U.S.A.
Mostafa A. El-Sayed
Affiliation:
Laser Dynamics Laboratory, School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, U.S.A.
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Abstract

The present work reports the synthesis of self-organized strontium-doped titania nanotubes arrays as a potential material for photocatalytic water splitting. Electrochemical anodization process was used to grow such material under various electrochemical conditions. The effect of dopant concentration on the morphology and photoelectrochemical properties of the material was investigated. The microstructure, morphology and composition of as-prepared and heat treated nanotubes were characterized by field emission scanning electron microscopy (FESEM), x-ray diffraction (XRD), transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy (XPS). The results showed that increasing the dopant concentration up to its solubility limit results in higher photoelectrochemical activity. A preliminary proof of concept of the photocatalytic activity of the fabricated material was estimated in terms of the use of such material as a photoanode for photoelectrochemical water splitting.

Keywords

electrochemical synthesisnanostructureTi
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1352: Symposium GG – Titanium Dioxide Nanomaterials , 2011 , mrss11-1352-gg16-04
Copyright
Copyright © Materials Research Society 2011

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References

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