Nano particles of Titanium dioxide are prepared by using a sol-gel route by using hydrolysis of Titanium tetraisopropoxide with ethanol and water mixture as titania source. After heat treatment of the samples, we characterized their structures and basic properties by using conventional XRD, FT[1]IR, scanning electron microscopy (SEM), UV-Vis spectroscopy and photoluminescence spectroscopy (PL). The X-ray diffraction pattern revealed that the calcined sample of TiO2 has both anatase and rutile phases. The spherical shape or spheroidal shape was observed using scanning electron microscopy. The rate of recombination and transfer behavior of the photo excited electron-hole pairs in the semiconductors was recorded by photoluminescence. It was found that annealing could improve the crystallization of TiO2 powders and accelerated the phase transformation from anatase to rutile. The result shows that the different calcination time and calcination temperature, have a lot of influences upon the properties of nano TiO2
