Hostname: page-component-8448b6f56d-cfpbc Total loading time: 0 Render date: 2024-04-25T05:05:21.159Z Has data issue: false hasContentIssue false
  • English
  • Français

Hydrogen Gas Evolution From Water Dispersing Nanoparticles Irradiated With Gamma-Ray

Published online by Cambridge University Press:  10 February 2011

S. Seino ,
R. Fujimoto ,
T. A. Yamamoto ,
M. Katsura ,
S. Okuda ,
K. Okitsu  and
R. Oshima
S. Seino
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan. sseino@nucl.eng.osaka-u.ac.jp
R. Fujimoto
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
T. A. Yamamoto
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
M. Katsura
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
S. Okuda
Affiliation:
Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
K. Okitsu
Affiliation:
Department of Materials Science and Engineering, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
R. Oshima
Affiliation:
Research Institute for Advanced Science and Technology, Osaka Prefectural University, 1-2 Gakuen, Sakai, Osaka 599-8570, Japan
Get access

Abstract

Hydrogen gas evolution from water dispersing nanoparticles under 60Co γ-ray irradiation was investigated under various conditions. Dispersion of TiO2, A12O3, ZnO, ZrO2 and CeO2 nanoparticles with average sizes of 6 nm - 11 µm showed hydrogen yields much higher than that obtained by pure water radiolysis, and the yields seemed to depend on their particle size and shape rather than their chemical species. Hydrogen yield increased with increasing γ-dose but not linearly, which implies the occurrence of a kind of reversing reaction. Some of the nanoparticles supported with Pt, Au and Pd were also examined. The yields were strongly affected by these noble metals, which indicates an important role of the particle surface in the total mechanism of the present hydrogen evolution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 505
Copyright
Copyright © Materials Research Society 2000

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 Wada, Y., Kawaguchi, K. and Myochin, M., Progress in Nuclear Energy 29, 251–256 (1995)Google Scholar
2 Yamamoto, T. A., Seino, S., Katsura, M., Okitsu, K., Oshima, R. and Nagata, Y., Nanostructured Materials 12, 1045–1048 (1999)Google Scholar
3 LI, Y. and Wang, L., in Semiconductor Nanoclusters Physical, Chemical, and Catalytic Aspects, edited by Kamat, P. V. and Meisel, D. (Elsevier, Amsterdam, 1996) 391–415 Google Scholar
4 Draganic, I. G. and Draganic, Z. D., The Radiation Chemistry of Water, (Academic Press, New York and London, 1971), p. 9–14, p. 140 Google Scholar
5 Seino, S., Fujimoto, R., Yamoamoto, T. A., Katsura, M., Okuda, S. and Oshima, R., Radioisotopes, (to be accepted)Google Scholar
6 Okitsu, K., Mizukoshi, Y., Bandow, H., Maeda, Y., Yamamoto, T. A. and Nagata, Y., Ultrasonic Sonochemistry, 3, S249 (1996)Google Scholar
7 Lewis, F. A., The Palladium Hydrogen System, (Academic Press, London New York, 1967), p. 13–42 Google Scholar
8 Harada, H. and Ueda, T., Chemical Physics Letters 106, 229–231 (1984)Google Scholar