Hostname: page-component-848d4c4894-r5zm4 Total loading time: 0 Render date: 2024-06-30T17:08:24.771Z Has data issue: false hasContentIssue false
  • English
  • Français

Photocatalytic Hydrogen Production from Gas-phase Methanol and Water with Nanocrystalline TiO2 Thin Films in High Vacuum

Published online by Cambridge University Press:  01 February 2011

Kei Noda ,
Masashi Hattori ,
Kouichi Amari ,
Kei Kobayashi ,
Toshihisa Horiuchi  and
Kazumi Matsushige
Kei Noda
Affiliation:
nodakei@kuee.kyoto-u.ac.jp, Kyoto University, Electronic Science & Engineering, Katsura, Nishikyo, Kyoto, 615-8510, Japan, 81753832307, 81753832308
Masashi Hattori
Affiliation:
hattori@piezo.kuee.kyoto-u.ac.jp, Kyoto University, Electronic Science & Engineering, Katsura, Nishikyo, Kyoto, 615-8510, Japan
Kouichi Amari
Affiliation:
amari@semicon.kuee.kyoto-u.ac.jp, Kyoto University, Electronic Science & Engineering, Katsura, Nishikyo, Kyoto, 615-8510, Japan
Kei Kobayashi
Affiliation:
keicoba@iic.kyoto-u.ac.jp, Kyoto University, Innovative Collaboration Center(ICC), Katsura, Nishikyo, Kyoto, 615-8520, Japan
Toshihisa Horiuchi
Affiliation:
keicoba@iic.kyoto-u.ac.jp, Kyoto University, Innovative Collaboration Center(ICC), Katsura, Nishikyo, Kyoto, 615-8520, Japan
Kazumi Matsushige
Affiliation:
thoriuti@iic.kyoto-u.ac.jp, Advanced Software Technology and Mechanics Research Institute (ASTEM), Shimogyo, Kyoto, 600-8813, Japan
Get access

Abstract

Photocatalytic hydrogen production with gas-phase reactions in high vacuum was examined for nanocrystalline anatase-type titanium dioxide (TiO2) thin films. The hydrogen generation process on platinized TiO2 specimens was investigated using a quadrupole mass spectrometer at a real-time scale under various partial pressures of gaseous methanol and water. As a result, hydrogen generation was successfully detected under ultraviolet ray (UV) illumination even in high vacuum (∼ 10−7 Torr). And the amount of produced H2 largely depends on the temperature of TiO2 samples, probably due to different surface states of TiO2. This study suggests the possibility of new high-speed H2 production system with gas-phase photocatalytic reactions.

Keywords

photochemicalmass spectroscopysurface reaction
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1056: Symposium HH – Nanophase and Nanocomposite Materials V , 2007 , 1056-HH11-56
Copyright
Copyright © Materials Research Society 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1 O'Regan, B. and Grätzel, M., Nature 353, 737 (1991).Google Scholar
2 Kawai, M., Naito, S., Tamaru, K. and Kawai, T., Chem. Phys. Lett. 98, 377 (1983).Google Scholar
3 Nosaka, A. Y., Nishino, J., Fujiwara, T., Ikegami, T., Yagi, H., Akutsu, H., Nosaka, Y., J. Phys. Chem. B 110, 8380 (2006).Google Scholar
4 Anpo, M., Catalysis Survey from Japan 1, 169 (1997).Google Scholar
5 Fujishima, A. and Honda, K., Nature 238, 37 (1972).Google Scholar
6 Sato, S., New. J. Chem. 12, 859 (1988).Google Scholar
7 Noda, K., Hattori, M., Amari, K., Kobayashi, K., Horiuchi, T. and Matsushige, K., Jpn. J. Appl. Phys. Part2 46, L749 (2007).Google Scholar
8 Jiu, J., Isoda, S., Adachi, M., Wang, F., J. Photochem. Photobiol. A: Chem. 189, 314 (2007).Google Scholar
9 Bard, A. J., J. Photochem. 10, 59 (1979).Google Scholar
10 Herman, G. S., Dohnalek, Z., Ruzycki, N. and Diebold, U., J. Phys. Chem. B 107, 2788 (2003).Google Scholar