Water splitting and hydrogen emitting catalytic function of hydrogen-implanted oxide ceramics studied using ion beam technology

K. Morita, B. Tsuchiya, S. Nagata, K. Katahira, M. Yoshino, J. Yuhara, Y. Arita, T. Ishijima, H. Sugai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Temperature dependence of the D-H replacement speed in D-implanted oxide ceramics exposed to H2 vapor has been studied using the ERD technique. It is found that the D-H replacement speed increases when the exposed specimen is heated above the implantation temperature and the amount of H uptaken by the D-H replacement is almost the same as the implantation amount of D, while both D as-implanted and H uptaken in the replacement are released by heating the specimen in the vacuum. No reduction in the amount of H uptaken by exposure to H2O vapor at elevated temperatures is ascribed to enough supply of H from the surface due to splitting of H2O faster than their thermal release. Based on the one way diffusion model of both dipole-induced water splitting at the surface and hydrogen gas emission from the bulk, it is shown that thermal detrapping of D implanted and H replaced in the specimen heated enhances the D-H replacement speed higher than the one extrapolated from the temperature dependence of the D-H replacement speed for the specimens cooled below the implantation temperature, in which the thermal detrapping hardly takes place.

Original languageEnglish
Title of host publicationION IMPLANTATION TECHNOLOGY
Subtitle of host publication16th International Conference on Ion Implantation Technology, IIT 2006
PublisherAmerican Institute of Physics Inc.
Pages300-303
Number of pages4
ISBN (Print)0735403651, 9780735403659
DOIs
Publication statusPublished - 2006
EventION IMPLANTATION TECHNOLOGY: 16th International Conference on Ion Implantation Technology, IIT 2006 - Marseille, France
Duration: 2006 Jun 112006 Nov 16

Publication series

NameAIP Conference Proceedings
Volume866
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherION IMPLANTATION TECHNOLOGY: 16th International Conference on Ion Implantation Technology, IIT 2006
CountryFrance
CityMarseille
Period06/6/1106/11/16

Keywords

  • Hydrogen gas emission
  • Hydrogen isotopes replacement
  • Ion beam analysis
  • Oxide ceramics
  • Water splitting

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Morita, K., Tsuchiya, B., Nagata, S., Katahira, K., Yoshino, M., Yuhara, J., Arita, Y., Ishijima, T., & Sugai, H. (2006). Water splitting and hydrogen emitting catalytic function of hydrogen-implanted oxide ceramics studied using ion beam technology. In ION IMPLANTATION TECHNOLOGY: 16th International Conference on Ion Implantation Technology, IIT 2006 (pp. 300-303). (AIP Conference Proceedings; Vol. 866). American Institute of Physics Inc.. https://doi.org/10.1063/1.2401517