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Int. J.Nano Dimens
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 afatcat:3zbpkhrlzrhhfaihhxcyfo6r5y