Light intensity dependence of the action spectra of photocatalytic reactions with anatase titanium(IV) oxide

Torimoto, Tsukasa; Aburakawa, Yousuke; Kawahara, Yoichiro; Ikeda, Shigeru; Ohtani, Bunsho

doi:10.1016/j.cplett.2004.05.077


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Light intensity dependence of the action spectra of photocatalytic reactions with anatase titanium(IV) oxide

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Title:	Light intensity dependence of the action spectra of photocatalytic reactions with anatase titanium(IV) oxide
Authors:	Torimoto, Tsukasa Browse this author
	Aburakawa, Yousuke Browse this author
	Kawahara, Yoichiro Browse this author
	Ikeda, Shigeru Browse this author
	Ohtani, Bunsho Browse this author →KAKEN DB
Issue Date:	1-Jul-2004
Publisher:	Elsevier B.V.
Journal Title:	Chemical Physics Letters
Volume:	392
Issue:	1-3
Start Page:	220
End Page:	224
Publisher DOI:	10.1016/j.cplett.2004.05.077
Abstract:	Light intensity dependence of action spectra of photocatalytic reactions was investigated using anatase single-phase titanium(IV) oxide powders as photocatalysts. The action spectra normalized at 350 nm were not changed in methanol dehydrogenation with the range of intensities of ca. 0.1–10 mW cm−2, while those for acetic acid decomposition were red-shifted with increase in light intensity. The apparent quantum yield of the former was almost independent of the irradiation intensity, but that of the latter was declined with increase in light intensity, the degree being considerably enhanced with the irradiation at shorter wavelength when the light intensity was higher than 2 mW cm−2. These can be explained by the difference in the utilization efficiency of photogenerated charge carriers.
Relation:	http://www.sciencedirect.com/science/journal/00092614
Type:	article (author version)
URI:	http://hdl.handle.net/2115/14644
Appears in Collections:	触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 大谷文章

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