Iranian Nanotechnology Society International Journal of Nanoscience and Nanotechnology 1735-7004 9 3 2013 09 01 Microwave–Assisted Hydrothermal Synthesis and Optical Characterization of SnO2 Nanoparticles 139 142 4010 EN P. Boroojerdian Department of Passive Defense, Malek Ashtar University of Technology, Tehran, I. R. Iran. Journal Article 2013 06 28 Semiconductor nanoparticles exhibit size dependent properties due to quantum confinement effect that are not present in their bulk counterparts. In this work, extremely fine and pure SnO2 nanoparticles of ~1.1 nm size were synthesized by a solution process, in which amorphous precipitate of SnO2 was crystallized by microwave heating. The particles sizes varied from ~1.1 to ~2.7 nm. By XRD analysis, the particle size, crystal structure and purity of the samples were determined. The UV-Vis measurements of SnO2 nanoparticles, showed that, excitonic peaks existed at ~237, ~250 and ~279 nm corresponding to ~1.1, ~2 and ~2.7 nm clusters respectively. The STM analysis showed that the nanoparticles were spherical in shape, having narrow size distribution. https://www.ijnnonline.net/article_4010_6693a7aacb8a2e74c6f5fe91bc39864b.pdf