Preparation and Characterization of SnO2 Nanoparticles

Tin Oxide (SnO2) nanoparticles powder have been synthesized by chemical precipitation method. The samples were characterized by X-ray diffraction, UV-Visible absorption and scanning probe Microscope SPM. The Xray analysis shows that the obtained powder is SnO2 with tetragonal rutile crystalline structure and the crystalline size in the range of 8-10nm. The SPM investigation reveals that the average particles size is 73nm. The optical band gap values of SnO2 nanoparticles were calculated to be about 4.3eV in the temperature 550 o C, comparing with that of the bulk SnO2 3.78eV, by optical absorption measurement