Effects of selective leaching of bismuth oxide sheets in triple-layered Aurivillius phases on their photocatalytic activities

Manabu Kudo, Saki Tsuzuki, Ken Ichi Katsumata, Atsuo Yasumori, Yoshiyuki Sugahara

    Research output: Contribution to journalArticle

    21 Citations (Scopus)

    Abstract

    The photocatalytic activities of triple-layered Aurivillius phases, Bi 2ANaNb3O12 (A =Sr, Ca) and Bi2CaNaTa3O12, and of protonated forms prepared from these Aurivillius phases through selective leaching of bismuth oxide sheets were investigated. UV-Vis diffuse reflectance spectra showed blue shifts of the adsorption edges upon selective leaching. Although none of the triple-layered Aurivillius phases were active for photocatalytic H2 evolution from a 20 vol% ethanol solution, all the corresponding protonated forms showed photocatalytic activities for H 2 evolution. The effects of the changes in electronic structures and interlayer surface creation on photocatalytic activities are discussed.

    Original languageEnglish
    Pages (from-to)12-16
    Number of pages5
    JournalChemical Physics Letters
    Volume393
    Issue number1-3
    DOIs
    Publication statusPublished - 2004 Jul 21

    Fingerprint

    bismuth oxides
    leaching
    Leaching
    Electronic structure
    Ethanol
    blue shift
    Adsorption
    interlayers
    ethyl alcohol
    electronic structure
    reflectance
    adsorption
    bismuth oxide

    ASJC Scopus subject areas

    • Physical and Theoretical Chemistry
    • Spectroscopy
    • Atomic and Molecular Physics, and Optics

    Cite this

    Effects of selective leaching of bismuth oxide sheets in triple-layered Aurivillius phases on their photocatalytic activities. / Kudo, Manabu; Tsuzuki, Saki; Katsumata, Ken Ichi; Yasumori, Atsuo; Sugahara, Yoshiyuki.

    In: Chemical Physics Letters, Vol. 393, No. 1-3, 21.07.2004, p. 12-16.

    Research output: Contribution to journalArticle

    Kudo, Manabu ; Tsuzuki, Saki ; Katsumata, Ken Ichi ; Yasumori, Atsuo ; Sugahara, Yoshiyuki. / Effects of selective leaching of bismuth oxide sheets in triple-layered Aurivillius phases on their photocatalytic activities. In: Chemical Physics Letters. 2004 ; Vol. 393, No. 1-3. pp. 12-16.
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    AU - Yasumori, Atsuo

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