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Effect of pH on Hydrogen Evolution Yield from Water Dispersing Titania Nanoparticles Enhanced by Gamma Ray

Published online by Cambridge University Press:  21 March 2011

Satoshi Seino ,
Takao A. Yamamoto ,
Ryosuke Fujimoto ,
Kensuke Hashimoto ,
Masahiro Katsura ,
Shuichi Okuda  and
Kenji Okitsu
Satoshi Seino
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Takao A. Yamamoto
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Ryosuke Fujimoto
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Kensuke Hashimoto
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Masahiro Katsura
Affiliation:
Department of Nuclear Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
Shuichi Okuda
Affiliation:
Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
Kenji Okitsu
Affiliation:
Japan Science and Technology Corporation, 4-1-8 Hon-cho, Kawaguchi, Saitama 332-0012, Japan
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Abstract

Hydrogen gas evolution from water dispersing nanoparticles induced by 60Co gamma-ray irradiation was studied. Nanoparticle of TiO2 with average size of 30 nm was examined. It was indicated that the hydrogen yields were affected significantly by pH of the dispersion. Difference in agglomeration could explain the difference in hydrogen yields. Reactions that enhance the hydrogen yields were discussed, and it was concluded that the radiolysis process is dominant in the total enhancement mechanism.

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References

REFERENCES

1. Yamamoto, T. A., Seino, S., Katsura, M., Okitsu, K., Oshima, R. and Nagata, Y., Nanostructured Materials 12, 1045 (1999).Google Scholar
2. Seino, S., Fujimoto, R., Yamoamoto, T. A., Katsura, M., Okuda, S. and Oshima, R., Radioisotpes, 49, 354 (2000) [in Japanese].Google Scholar
3. Seino, S., Fujimoto, R., Yamoamoto, T. A., Katsura, M., Okuda, S., Okitsu, K. and Oshima, R., Mat. Res. Soc. Symp. Proc. 608, 505 (2000).Google Scholar
4. Seino, S., Fujimoto, R., Hashimoto, K., Yamoamoto, T. A., Katsura, M., Okuda, S., Okitsu, K. and Oshima, R., Scripta Materialia 44, 1709 (2001).Google Scholar
5. Seino, S., Fujimoto, R., Hashimoto, K., Yamoamoto, T. A., Katsura, M., Okuda, S. and Okitsu, K., J. Nucl. Sci. Tech. 38, 633 (2001).Google Scholar
6. Wada, Y., Kawaguchi, K. and Myochin, M., Progress in Nuclear Energy 29, 251 (1995).Google Scholar
7. Draganic, I. G. and Draganic, Z. D., The Radiation Chemistry of Water (Academic Press, New York and London, 1971) p. 9.Google Scholar
8. Spinks, J. W. and Woods, R. J., An Introduction to Radiation Chemistry, 3rd ed. (John Wiley & Sons, New York, 1990) p. 243.Google Scholar
9. Li, Y. and Wang, L., Semiconductor Nanoclusters Physical, Chemical, and Catalytic Aspects, (Elsevier, Amsterdam, 1996) p. 391.Google Scholar