Impact of Sintering Temperature on Crystallite size and Optical Properties of SnO₂ Nanoparticles

Tin oxide (SnO₂) nanoparticles synthesized by hydrothermal method and kept at sintering temperatures (800-1200 ºC). The tin (II) chloride dehydrate (SnCl₂.2H₂O) used to prepared the SnO₂ precursor solution. The Tin oxide nanoparticles have been characterized by X-ray diffraction (XRD), Field emission scanning electronic spectroscopy (FESEM), and UV-Visible spectroscopy. The nanoparticles size of SnO₂ depends on the degree of sintering temperature, it found crystallite size (22.12,27.34 , 36.11 and 42.02) nm of the SnO₂ at800, 900, 1000 and 1200°C, respectively. XRD shows a pure tetragonal rutile crystalline structure for SnO₂ nanoparticles. FESEM images revealed the particles size increased with increasing sintering temperature. The transmittance and absorption are affected by an increased degree of sintering temperature. The band gap of SnO₂ nanoparticles decreased with increasing sintering temperature (2.6 to 2.4) eV when temperature raised from 800 to 1200 ºC, which belongs to the effect of particle size (paper)