Synthesis and characterization of chromium doped SrTiO3 photocatalyst

SrTiO3 and chromium doped SrTiO3 (SrTi(1−x)CrxO3) photocatalysts were synthesized by the polymeric precursor method using citric acid and ethylene glycol. Single phase SrTiO3 and SrTi(1−x)CrxO3 nano-size powder were produced at 450 °C. A new band gap in the visible light range was formed by chromium doping in SrTiO3. The absorption of visible light is of practical importance for the application of SrTiO3 as a photocatalyst.