A visible light driven doped TiO 2 nanophotocatalyst: Preparation and characterization

S Zakeri, M Asghari, M Feilizadeh, M Vosoughi, M Asghari
2014 Int. J.Nano Dimens   unpublished
A useful nanophotocatalyst (La,S-TiO 2) was prepared by a sol-gel method and characterized by UV-vis diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), photoluminescence emission spectroscopy (PL) and scanning electron microscopy (FESEM). The results showed that the La,S-TiO 2 , which calcined at 550 °C, contained only anatase phase and its crystal size was 23 nm. In addition, the FESEM analysis indicates that the La,S-TiO 2 nano particles with diameter of 20 to 25 nm could have a
more » ... 25 nm could have a good dispersion in solution. In order to evaluate of activity of the modified synthesized photocatalyst (La,S-TiO 2), comparison between modified synthesized TiO 2 (La,S-TiO 2) and pure synthesized TiO 2 for degradation of Methyl Orange was investigated. It was found that the modified synthesized photocatalysis (La,S-TiO 2) has much higher photocatalytic activity than undoped TiO 2 for the degradation of contamination.