Skip to main content
SpringerLink
Log in

Photocatalysis of Columnar TiO2 Thin Films

  • Published:
MRS Online Proceedings Library Aims and scope

Abstract

Photocatalysis of oblique columnar TiO2 thin films has been investigated as a function of thickness using photobleaching of methylene blue (MB). The degradation rate of MB depends on the thickness of the films, although no significant differences in the columnar morphology, crystallinity and optical absorption are found. The relation between the degradation rate and the thickness is well described by a simple model, in which the degradation rate at a certain depth is proportional to the intensity of ultra violet (UV) light. The photocatalytic active thickness is estimated at approximately 200 nm. Thus the interior surface of the oblique columnar TiO2 thin films works well as photocatalyst.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. R. Messier and A. Lakhtakia, Mat. Res. Innovat. 2, 217 (1999).

    Article  CAS  Google Scholar 

  2. R. M. A. Azzam, Appl. Phys. Lett. 61, 3118 (1992).

    Article  Google Scholar 

  3. A. Lakhtakia and W. S. Weiglhofer, Proc. R. Soc. Lond. A 448, 419 (1995).

    Article  Google Scholar 

  4. K. Robbie, M. J. Brett, and A. Lakhtakia, Nature 384, 616 (1996).

    Article  CAS  Google Scholar 

  5. A. Lakhtakia, R. Messier, M. J. Brett, and K. Robbie, Innov. Mater. Res. 1, 165 (1996).

    CAS  Google Scholar 

  6. Motofumi Suzuki, Tadayoshi Ito, and Yasunori Taga, Appl. Phys. Lett. 78, 3968 (2001).

    Article  CAS  Google Scholar 

  7. Motofumi Suzuki and Yasunori Taga, J. Appl. Phys. 90, 5599 (2001).

    Article  CAS  Google Scholar 

  8. R. W. Mattews, J. Chem. Soc., Faraday Trans. 1 85, 1291 (1989).

    Article  Google Scholar 

  9. S. Lakshmi, R. Renganathan, and S. Fujita, J. Photochem. Photobiol. A: Chem. 88, 163 (1995).

    Article  CAS  Google Scholar 

  10. Andew Mills and Jishun Wang, J. Photochem. Photobiol. A: Chem. 127, 123 (1999).

    Article  CAS  Google Scholar 

Download references

Acknowledgments

We are grateful to S. Kinoshita for SEM observations. This work was supported by The 21st Century COE Program “Center of Excellence for Research and Education on Complex Functional Mechanical Systems” and by The Mazda Foundation's Research Grant.

Author information

Authors and Affiliations

  1. Department of Engineering Science and Mechanics, Kyoto University, Kyoto, 606-8501, Japan

    Motofumi Suzuki, Kazuaki Kishimoto, Wataru Maekita, Kaoru Nakajima & Kenji Kimura

Authors
  1. Motofumi Suzuki
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kazuaki Kishimoto
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Wataru Maekita
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Kaoru Nakajima
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Kenji Kimura
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Suzuki, M., Kishimoto, K., Maekita, W. et al. Photocatalysis of Columnar TiO2 Thin Films. MRS Online Proceedings Library 849, 190–195 (2004). https://doi.org/10.1557/PROC-849-KK8.7

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1557/PROC-849-KK8.7

Search

Navigation