This study represents comparisons between the structural, morphologies and optical properties of tin oxide (SnO2 ) nanoparticles prepared by two different methods, namely the Sol-gel and the Co- precipitation methods. The characteristics of the particles were analyzed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and Energy Dispersive X ray spectroscopy (EDS). The optical properties were analyzed using UV-vis spectroscopy (UV-vis). Using XRD study recognized the structure of a single phase of SnO2 nanoparticles of both methods. It has been enormous that solvents played main role in varying the crystallite size of tin oxide nanoparticles in Sol-gel and Co-precipitation methods. From two different types of method, the crystallite size of SnO2 nanoparticles varies mutually solvent and method. Using the two-different method XRD study showed well crystallized tetragonal SnO2 can be obtained and the crystal sizes were 16.71, 5.43 and 10.09 nm for the sample of water, methanol and ethanol. In Co-precipitation method the crystal sizes were 18.71, 9.9 and 11.7 nm for the sample of water, methanol and ethanol. In sol-gel method and Co-precipitation X-Ray Diffraction (XRD) patterns showed extremely crystalline single phase tetragonal structure, with a main (110) plane in water and methanol samples and (101) for ethanol samples in the method I. In the Co-precipitation method, with predominant (101) plane in methanol and ethanol sampled and (110) for water samples. With the above analysis, we will discuss that the Co-precipitation may be appreciated for time consuming and high yield of particles.
