Gas phase photocatalytic decomposition of alcohols with titanium dioxide nanotube arrays in high vacuum

Masashi Hattori, Kei Noda, Kei Kobayashi, Kazumi Matsushige

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Hydrogen production based on gas-phase photocatalysis was investigated for platinized titanium dioxide (TiO2) nanotube arrays (TNAs) in high vacuum. In the presence of ethanol of 10-6 Torr, H2 generated from the ethanol photodecomposition was successfully detected at a real-time scale for anodized TNAs. In addition, it was found that longer nanotube arrays with upright geometry are desirable for increasing the amount of the H2 production. A mechanism of gas phase photocatalytic reforming for the TNAs, considered in this work, suggests that the selective deposition of Pt cocatalyst particles on the aperture parts of the nanotube arrays is necessary for efficient H2 production. This consideration was confirmed by the experimental result of the comparison of different Pt deposition methods: RF sputtering and photodeposition. These findings obtained in this study will be useful for designing new hydrogen reformers in the future.

本文言語English
ページ(範囲)549-551
ページ数3
ジャーナルPhysica Status Solidi (C) Current Topics in Solid State Physics
8
2
DOI
出版ステータスPublished - 2011 2 1
外部発表はい

ASJC Scopus subject areas

  • 凝縮系物理学

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