Synthesis and characterization of SnO2 nanoparticles by Co-Precipitation method
- Department of Physics, Sri GVG Visalakshi College for Women, S. V. Mills Post, Udumalpet, India.
Abstract
Tin oxide (SnO2)nanoparticles were synthesized by co-precipitation method and the synthesized nanoparticles were annealed at different temperatures for characterization. The powders were investigated with X-ray diffraction, scanning electron microscopy and optical spectroscopy. The structural characterization was carried out by X-ray diffraction which confirms the crystalline nature of the films with a tetragonal structure. SEM analysis of the powders enabled the conclusion that the prepared nanoparticles are spherical particles which are smaller in size composed of clustered and agglomerated nanoparticles. Â From the absorption spectra the type of transition and band gap of the synthesized nanoparticles were estimated. The optical (UV-visible) spectrum exhibits a well defined absorption which in considerably blue shifted related to the peak absorption of bulk SnO2 indicating quantum size effect.