Effect of carboxyl group on the visible-light photocatalytic activity of SrTiO3 nanoparticles

Huihui Li, Shu Yin, Yuhua Wang, Makoto Kobayashi, Satoko Tezuka, Masato Kakihana, Tsugio Sato

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)


    SrTiO3 nanoparticles modified with a carboxyl group were successfully prepared by microwave-assisted solvothermal reaction of SrCl 2·6H2O and Ti(OC3H7) 4 in methanol-organic acid solution. The as-prepared products were characterized using X-ray diffraction (XRD), diffuse reflectance spectroscopy, and Fourier-transform infrared (FTIR) spectroscopy. The photocatalytic activity was determined by DeNO x ability using a mercury arc with filters to control irradiation wavelengths to >290, >400, and >510 nm. Nanoparticles of perovskite-type SrTiO3 were successfully synthesized above pH 12. The photocatalytic activity of SrTiO3 under visible-light (>510 nm) irradiation could be promoted by surface modification of SrTiO3 with the carboxyl group (-COO), especially from oleic acid.

    Original languageEnglish
    Pages (from-to)1615-1621
    Number of pages7
    JournalResearch on Chemical Intermediates
    Issue number4
    Publication statusPublished - 2013 Apr


    • Carboxyl
    • Organic acid
    • Photocatalyst
    • SrTiO
    • Visible light

    ASJC Scopus subject areas

    • Chemistry(all)


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