Study the heat treatment effect on the TiO2 nano-particles prepared by sol-gel process.

In this paper, titanium dioxide (TiO2) nano-particles were synthesized by the sol-gel method by using Titanium tetrachloride (TiCl4) solution as precursor. The effects of calcination temperature were determined. The samples were examined using X-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier-transform infrared spectroscopy (FT-IR) analysis. X-ray diffraction measurements showed that TiO2 nano-particles were polycrystalline with rutiles and anatase phases. The Surface morphological studies obtained from SEM micrographs. Particle size increased from 43 to 500 nm when calcination temperature was 500 °C. In the FT-IR spectra, the peaks observed below 700 cm-1 due to stretching and bending vibrations of Ti-O-Ti bond. [ABSTRACT FROM AUTHOR]