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 journalArticle

5 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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