Preparation and photocatalytic activities of a semiconductor composite of CdS embedded in a TiO2 gel as a stable oxide semiconducting matrix

Hiroyuki Fujii, Michitaka Ohtaki, Koichi Eguchi, Hiromichi Arai

    研究成果: Contribution to journalArticle査読

    121 被引用数 (Scopus)

    抄録

    A semiconductor composite of CdS particles embedded in a TiO2 gel after heat treatment at 250°C in air is revealed to show catalytic H2 evolution from an EDTA aqueous solution with light of λ ≤ 450 nm, in contrast to bare CdS which is stoichiometrically photocorroded. A significant improvement in the activity even with considerable loses of CdS in the gel during the heat treatment suggests that the TiO2 gel crystallized into anatase can prevent photocorrosion of CdS embedded therein, and serve as a semiconducting matrix to facilitate charge transfer from the embedded CdS to Pt at the surfaces of the gel.

    本文言語英語
    ページ(範囲)61-68
    ページ数8
    ジャーナルJournal of Molecular Catalysis A: Chemical
    129
    1
    DOI
    出版ステータス出版済み - 3 2 1998

    All Science Journal Classification (ASJC) codes

    • 触媒
    • プロセス化学およびプロセス工学
    • 物理化学および理論化学

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