A SIMPLE ROUTE FOR SYNTHESIS OF TIN DIOXIDE NANORODS BASED ON IMPROVED SOLID-STATE REACTIONS

This letter reports a synthesizing method with an enhanced solid state reaction to fabricate SnO₂ nanorods. The structure and morphology of SnO₂ nanorods were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that the nanorods were rutile SnO₂ with the diameter of about 30 nm and the length of several micrometers. It was found that the chlorine salt was very important for controlling the grain size of nanoparticles and providing kinetic and ambulatory circumstance to induce oriented growth of SnO₂ nanoparticles. The growth mechanism of the nanorods can be understood on the basis of oriented aggregation induced by polar forces.