%0 Journal Article
%T Ce3+ Doped TiO2 Nanoparticles; Synthesis and Photocatalytic Activity
%A M.J. Pawar
%A P. B. Kaware
%A R. V. Bijewar
%J International Journal of Emerging Sciences
%D 2012
%I Islamia University of Bahawalpur
%X This paper deals with the synthesis of pure and Ce3+ doped TiO2 nanoparticles and study of their photocatalytic activity. A sol-gel auto-combustion method was adopted for preparation of the samples. The samples were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Brunauer, Emmett and Teller (BET) techniques. XRD patters of 0.5 mol% Ce3+ doped TiO2 obtained by calcination at 600ˇăC indicated that the samples were crystalline with broad peaks of anatase phase. The anatase particles had an average size of about 13.5 nm and high surface area 171.45 m2/g. The phase transformation from anatase to rutile began at 700ˇăC of calcination. The photocatalytic activity of samples was investigated in presence of UV light for photodegradation of cango red dye at different Ce3+ concentrations and heat treatment temperature. Ce3+ ions doping significantly enhanced the photocatalytic efficiency of TiO2 towards the degradation of dye. The photodegradation tests indicated the optimum conditions; calcination temperature 600ˇăC, irridation time 30 min, pH of dye solution 3, catalyst dosage 200 mg/L, dye dosage 100 ppm at which photodegradation dye approaches to about 100%. In this study, 0.5 mol% may be the most suitable Ce3+ ions concentration in TiO2 at which catalyst exhibits a large surface area and higher efficiency of electron/hole separation.
%K Ce3+ doped TiO2 nanoparticles
%K Sol-gel auto-combustion method
%K Photodegradation of cango red dye
%U http://ijes.info/2/1/42542111.pdf