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JAEA Reports

Development and management of the knowledge base for the geological disposal technology; Annual report 2006

Umeda, Koji; Oi, Takao; Osawa, Hideaki; Oyama, Takuya; Oda, Chie; Kamei, Gento; Kuji, Masayoshi*; Kurosawa, Hideki; Kobayashi, Yasushi; Sasaki, Yasuo; et al.

JAEA-Review 2007-050, 82 Pages, 2007/12

JAEA-Review-2007-050.pdf:28.56MB

This report shows the annual report which shows the summarized results and topic outline of each project on geological disposal technology in the fiscal year of 2006.

Journal Articles

X-ray induced photoelectrochemistry on TiO $_{2}$

Tamura, Kazuhisa; Oko, Yoshihisa*; Kawamura, Hiroyuki; Yoshikawa, Hideki*; Tatsuma, Tetsu*; Fujishima, Akira*; Mizuki, Junichiro

Electrochimica Acta, 52(24), p.6938 - 6942, 2007/08

https://doi.org/10.1016/j.electacta.2007.05.011

Times Cited Count：26 Percentile：48.64(Electrochemistry)

The electrochemical behaviour of TiO $_{2}$ under X-ray irradiation was studied. Under X-ray irradiation a current, a negative shift in the rest potential, and electrochemical oxidation and decomposition of [Fe $^{rm II}$ (CN) $_{6}$ ] $^{4-}$ were clearly observed. The incident photon-current conversion efficiency and energy conversion efficiency was 400-2000% and 0.2-2%, respectively, depending on sample conditions. These results show that the photoelectrochemical reactions were promoted by X-rays with a high incident photon-current conversion efficiency. The photocurrent and photopotential were observed above 4.965 keV, which corresponds to the Ti-K edge, indicating that electron-hole pairs are formed during the relaxation process of the excited Ti atoms.