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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/7898
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| タイトル: | Local work function analysis of Pt/TiO_2 photocatalyst by a Kelvin probe force microscope |
| 著者: | Hiehata, K.
Sasahara, A.
Onishi, H. |
| 発行日: | 2007-02-28 |
| 出版者: | Institute of Physics and IOP Publishing Limited |
| 誌名: | Nanotechnology |
| 巻: | 18 |
| 号: | 8 |
| 開始ページ: | 084007 |
| DOI: | 10.1088/0957-4484/18/8/084007 |
| 抄録: | Nanometre-sized Pt clusters were prepared on a TiO_2(110)-(1 × 1) surface, and the lateral distribution of work function was examined by using a Kelvin probe force microscope. Local work function on the Pt clusters was smaller than that on the surrounding TiO_2 surface. Assuming that the dipole moments which perturb work function are produced by uneven electron distribution, the decrease of the work function indicates electron transfer from the clusters to the TiO_2 surface. After decomposition of pivalate anions on the surfaces by UV irradiation, the work function increased on some Pt clusters. It is known that holes photoexcited in TiO_2 attach to pivalate anions to cause a decomposition reaction. Hence the increase of the observed work function by UV irradiation can be ascribed to the trapping of the accompanying electrons to the Pt clusters. |
| Rights: | Copyright (C) Institute of Physics and IOP Publishing Limited 2007. This is the author-created version of Institute of Physics and IOP Publishing Limited, K. Hiehata, A. Sasahara, and H. Onishi, Nanotechnology, 18(8), 2007, 084007. |
| URI: | http://hdl.handle.net/10119/7898 |
| 資料タイプ: | author |
| 出現コレクション: | c10-1. 雑誌掲載論文 (Journal Articles)
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このアイテムのファイル:
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記述 |
サイズ | 形式 |
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| C11953.pdf | | 369Kb | Adobe PDF | 見る/開く |
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