Effects of capping layers on the photoelectrochemical property of silver nanoparticle-modified indium-tin-oxide electrode

Ken Ichi Matsuoka, Hironobu Tahara, Tsuyoshi Akiyama, Sunao Yamada

    研究成果: Contribution to journalArticle査読

    5 被引用数 (Scopus)

    抄録

    Photoelectrochemical properties of indium-tin-oxide (ITO) substrate modified with silver nanoparticles (AgNPs) and effects of surface capping layer of AgNP were investigated in the water/acetonitrile (H2O/MeCN) electrolyte solutions with the presence of oxygen as an electron acceptor. The modified ITO substrate showed photocurrent response mainly driven by the photoinduced electron transfer from ITO substrate to AgNPs. In addition, its photoelectrochemical property significantly depended on the solvent composition of electrolyte solution which was in correlation with surface status of AgNPs. Combination of photoelectrochemical measurements and spectroscopic analysis suggested that presence of considerable amount of MeCN in the electrolyte solution triggered partial displacement of capping citrate ions to activate photocurrent generation.

    本文言語英語
    ページ(範囲)239-243
    ページ数5
    ジャーナルJournal of Photochemistry and Photobiology A: Chemistry
    221
    2-3
    DOI
    出版ステータス出版済み - 6 25 2011

    All Science Journal Classification (ASJC) codes

    • 化学 (全般)
    • 化学工学(全般)
    • 物理学および天文学(全般)

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