High performance visible light responsive photocatalysts for environmental cleanup via solution processing

Tsugio Sato, Peilin Zhang, Shu Yin

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    Fabrication of nitrogen-doped titania and/or strontium titanate nanoparticles via soft chemical reactions and their performance for environmental cleanup under visible light irradiation were introduced. Nitrogen-doped anatase, brookite and rutile with high specific surface area can be selectively prepared by the solvothermal reactions in mixed aqueous solution of titanium trichloride-hexamethylenetetramine. Nitrogen-doped strontium titanate can be prepared by mechanochemical reaction of strontium carbonate, titania and hexamethylenetetramine using a planetary ball-mill. Nitrogen-doped titania shows excellent photocatalytic activity for the nitrogen monoxide destruction under visible light irradiation. The photocatalytic activity of nitrogen-doped titania is in the order anatase > brookite > rutile. The photocatalytic activity of nitrogen-doped titania and strontium titanate can be improved by co-doping with higher valence metal ions to reduce oxygen vacancy and/or coupling with Fe 2O 3 and Pt to retard quick recombination of photo-induced electron and hole by the heterogeneous electron transfer.

    Original languageEnglish
    Pages (from-to)92-105
    Number of pages14
    JournalProgress in Crystal Growth and Characterization of Materials
    Volume58
    Issue number2-3
    DOIs
    Publication statusPublished - 2012 Jun 1

    Keywords

    • Hydrothermal
    • Low-temperature synthesis
    • Mechanochemical doping
    • Nitrogen-doped strontium titanate
    • Nitrogen-doped titania
    • Soft chemical processes
    • Solvothermal
    • Visible light responsive photocatalyst
    • deNO

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

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