Synthesis and photocatalytic properties of TiO2 and Pt pillared HCa2Nb3O10 doped with various rare earth ions

Tsugio Sato, Yasuhiko Fukugami

    Research output: Contribution to journalConference articlepeer-review

    20 Citations (Scopus)

    Abstract

    TiO2 and Pt pillars were constructed in the interlayer of H1-xCa2-xLnxNb3O10 (Ln = La, Nd, Eu, x = 0-0.75) by the stepwise intercalation reactions. The amounts of TiO2 and Pt incorporated were 0.5-2.9 and 0.04-0.19 wt.%, respectively. The height of TiO2 and Pt pillar was less than 0.5 nm. TiO2 and/or Pt pillared compounds were capable of water cleavage into hydrogen and oxygen by the band gap irradiation without a sacrificial hole scavenger although no water cleavage proceeded by using H1-xCa2-xLnxNb3O10 separately. The photocatalytic activity for water cleavage was in the order H1-xCa2-xLnxNb3O10/Pt > H1-xCa2-xLnxNb3O10/ (Pt, TiO2) > H1-xCa2-xLnxNb3O10/ TiO2 and that of Pt pillared nanocomposite was in the order H1-xCa2-xLaxNb3O10/Pt > H1-xCa2-xEuxNb3O10/Pt > H1-xCa2-xNdxNb3O10/Pt.

    Original languageEnglish
    Pages (from-to)397-405
    Number of pages9
    JournalSolid State Ionics
    Volume141-142
    DOIs
    Publication statusPublished - 2001 May 1
    Event14th Intenational Symposium on the Reactivity of Solids - Budapest, Hungary
    Duration: 2000 Aug 272000 Aug 31

    Keywords

    • HCaNbO
    • Photocatalysis
    • Pt pillar
    • TiO pillar

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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