Solvothermal synthesis and photocatalytic properties of chromium-doped SrTiO3 nanoparticles

Uyi Sulaeman, Shu Yin, Tsugio Sato

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88 Citations (Scopus)


Chromium (Cr)-doped SrTiO3 nanoparticles were synthesized by a microwave-assisted solvothermal reaction using SrCl2·6H2O and Ti(OC3H7)4 as starting materials in KOH methanol-oleic acid solution. The products were characterized by XRD, TEM, BET surface area, and XPS. The photocatalytic activity was determined by DeNOx ability using LED lamps with wavelengths of 627nm (red), 530nm (green), 445nm (blue) and 390nm (UV). The nanoparticles of perovskite type Cr-doped SrTiO3 with a particle size of 15-20nm were successfully synthesized. The photocatalytic activity of SrTiO3 for DeNOx ability under visible light (627nm) irradiation was able to be improved by doping with a small amount of Cr. The high photocatalytic activity of Cr-doped SrTiO3 in the visible region was caused by new absorption in the visible region.

Original languageEnglish
Pages (from-to)206-210
Number of pages5
JournalApplied Catalysis B: Environmental
Issue number1-2
Publication statusPublished - 2011 Jun 9


  • Chromium doping
  • Photocatalysis
  • Solvothermal synthesis
  • SrTiO


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