Effects of Sol Concentration on the Structural and Optical Properties of SnO2 Nanoparticle

In dis paper, teh TEMPeffects of changes in Sol concentration on teh structural and optical properties of SnO2 Nanoparticles are studied through teh Sol-Gel method. SnO2 Nanoparticles are produced from different SnO2 solution concentrations (0.1, 0.3 and 0.5 mol/L) at room temperature. X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) analysis are used to investigate teh TEMPeffects of changes in Sol concentration on teh crystalline and surface morphology of Nanoparticles. Teh XRD pattern shows dat teh particles are in teh standard tetragonal phase of SnO2. Teh crystallites sizes are 11.7nm, 18.8nm, and 74.8nm, for 0.1 M, 0.3M and 0.5 M of concentration respectively. Teh average size of SnO2 particles decreases by a reduction in teh Sol concentration. Teh band gap value is 4.07eV, 4.28eV and 4.36eV for 0.5M, 0.3M and 0.1M of concentration respectively. Teh UV-Visible analysis shows dat decreasing teh Sol concentration will cause teh absorption edge shift to teh shorter wavelengths, coz decreasing teh Sol concentration will reduce teh Nanoparticles size, and smaller Nanoparticles size absorb shorter wavelengths better and also increase teh band gap.