Transient IR Absorption Study of Charge Carriers Photogenerated in Sulfur-doped TiO2
Journal of Photochemistry and Photobiology A : Chemistry 177 巻 2-3 号
269-275 頁
2006-01-25 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Transient IR Absorption Study of Charge Carriers Photogenerated in Sulfur-doped TiO2
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| 作成者 |
Takeshita Kan
Yamakata Akira
Onishi Hiroshi
Nishijima Kazumoto
Ohno Teruhisa
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| 収録物名 |
Journal of Photochemistry and Photobiology A : Chemistry
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| 巻 | 177 |
| 号 | 2-3 |
| 開始ページ | 269 |
| 終了ページ | 275 |
| 抄録 |
Sulfur-doped TiO2 was prepared by two methods; one was simple oxidation annealing of TiS2, the other was mixing of titanium isopropoxide and thiourea. These two sulfur-doped TiO2 preparations showed fairly different photocatalytic activity under visible light. The dynamics of photogenerated charge carriers were studied by the transient absorption measurement in the region of mid-IR. In both samples, excitation by 532 nm pulse led to photocarrier generation to the same extent. Nevertheless, the reactivity of the photocarriers was totally different. Photogenerated electrons and holes transferred to reactant gas in the latter sample, whereas they did not in the former sample. We attributed the different carrier behavior to the difference in the distribution of S atoms or particle size. These observations can explain the difference in capability of photocatalysis under visible light.
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| 著者キーワード |
Sulfur-doped titanium dioxide
visible-light-response photocatalyst
Transient IR absorption
photogenerated carriers
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| NDC分類 |
化学 [ 430 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Elsevier
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| 発行日 | 2006-01-25 |
| 権利情報 |
Copyright (c) 2006 Elsevier Ltd.
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 1010-6030
[DOI] 10.1016/j.jphotochem.2005.06.006
[NCID] AA10684407
[DOI] http://dx.doi.org/10.1016/j.jphotochem.2005.06.006
～の異版である
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