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Journal of Materials Science

, Volume 44, Issue 11, pp 2820–2827 | Cite as

Synthesis and characterization of anodized titanium-oxide nanotube arrays

  • Michael Z. Hu
  • Peng Lai
  • M. S. Bhuiyan
  • Costas Tsouris
  • Baohua Gu
  • M. Parans Paranthaman
  • Jorge Gabitto
  • Latoya Harrison
Article

Abstract

Anodized titanium-oxide containing highly ordered, vertically oriented TiO2 nanotube arrays is a nanomaterial architecture that shows promise for diverse applications. In this paper, an anodization synthesis using HF-free aqueous solution is described. The anodized TiO2 film samples (amorphous, anatase, and rutile) on titanium foils were characterized with scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. Additional characterization in terms of photocurrent generated by an anode consisting of a titanium foil coated by TiO2 nanotubes was performed using an electrochemical cell. A platinum cathode was used in the electrochemical cell. Results were analyzed in terms of the efficiency of the current generated, defined as the ratio of the difference between the electrical energy output and the electrical energy input divided by the input radiation energy, with the goal of determining which phase of TiO2 nanotubes leads to more efficient hydrogen production. It was determined that the anatase crystalline structure converts light into current more efficiently and is therefore a better photocatalytic material for hydrogen production via photoelectrochemical splitting of water.

Keywords

TiO2 Rutile Anatase Phase Water Splitting Rutile Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was supported by the Department of Energy, Office of Basic Energy Sciences, Department of Materials Science and Engineering Program and by the Laboratory Directed Research and Development (LDRD) program of ORNL. ORNL is managed by UT-Battelle, LLC, for the US Department of Energy, under contract no. DE-AC05-00OR22725.

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Michael Z. Hu
    • 1
  • Peng Lai
    • 1
  • M. S. Bhuiyan
    • 1
  • Costas Tsouris
    • 1
  • Baohua Gu
    • 1
  • M. Parans Paranthaman
    • 1
  • Jorge Gabitto
    • 2
  • Latoya Harrison
    • 2
  1. 1.Oak Ridge National LaboratoryOak RidgeUSA
  2. 2.Chemical Engineering DepartmentPrairie View A and M UniversityPrairie ViewUSA

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