International Journal of Advanced Research and Development

Authors
Lakshmi Venkata Kumari P, Harish GS, Sreedhara Reddy P

Abstract
SnO₂ nanoparticles were synthesized by using cost-effective chemical co-precipitation method. To study the influence of pH on structural and optical properties of SnO₂ nanoparticles, pH value was varied from 7-12. Structural, surface morphology, chemical analysis and luminescence properties of prepared SnO₂ nanoparticles were studied by X-ray diffraction (XRD), fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) attached with energy dispersive spectroscopy (EDS) and photoluminescence studies (PL). X-ray diffraction study reveals the nano-size particle distribution of the samples with tetragonal rutile structure in the range of 2 to 4 nm. FTIR spectra show the structural confirmation of SnO₂ nanoparticles. Various PL signals were observed in the visible region around 400 to 600 nm due to oxygen vacancies and interfacial Sn vacancies present in the prepared nanosamples.