Photoelectrochemical Behavior of the Pt/TiO2 Nanocomposite Electrodes Prepared by Co-sputter Deposition

Takeshi SASAKI; Naoto KOSHIZAKI; Jong-Won YOON; Satoshi YAMADA; Michio KOINUMA; Masayuki NOGUCHI; Yasumichi MATSUMOTO

doi:10.5796/electrochemistry.72.443

コミュニケーション

Photoelectrochemical Behavior of the Pt/TiO₂ Nanocomposite Electrodes Prepared by Co-sputter Deposition

Takeshi SASAKI, Naoto KOSHIZAKI, Jong-Won YOON, Satoshi YAMADA, Michio KOINUMA, Masayuki NOGUCHI, Yasumichi MATSUMOTO

著者情報

キーワード: Nanocomposite Electrode, Pt/TiO₂, Photoelectrode, Visible Light

ジャーナルフリー

2004 年 72 巻 6 号 p. 443-445

DOI https://doi.org/10.5796/electrochemistry.72.443

詳細

抄録

The photoelectrochemical behavior of the Pt/TiO₂ nanocomposite electrodes in aqueous 0.1 M Na₂SO₄ electrolyte was investigated. Pt/TiO₂ nanocomposite films (platinum nanoparticles dispersed in TiO₂ films) and TiO₂ films deposited on ITO glass substrates by the sputtering were used as electrodes. Anodic photocurrent of Pt/TiO₂ nanocomposite electrode at potential higher than 0.5 V vs. Ag/AgCl under the irradiation of Xenon lamp was one order smaller in the magnitude than that of TiO₂ electrode, resulting from the recombination between hole and electron at Pt particles. Anodic photocurrent of Pt/TiO₂ nanocomposite electrode at 1.0 V vs. Ag/AgCl was observed at the wavelength region of visible light. Pt/TiO₂ nanocomposite electrodes have remarkably different photoelectrochemical behaviors compared with that of pure TiO₂ electrodes.

責任著者(Corresponding author)

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