Preparation of SnO2 Nanosized Powder by Precipitation Method with Nano-Mixing of Carbon Powder

Tin dioxide (SnO 2 ) nanosized powder was synthesized by a simple wet process. The precipitate, which was formed from the addition of NH 4 OH to SnCl 4 aqueous solution, was washed with distilled water, and was filtered. The obtained gel was mixed with carbon powder with a particle size of about 20 nm by a mechanically rotating mixer. The mixture was dried at 70°C in air. TEM observation of the dried sample revealed that the hydrated SnO 2 and the carbon powder were mixed at nano-scale level. The carbon powder was burned out by heat treatment at 600°C in air for 2 h, resulting in the formation of SnO 2 powder with a size of 10-30 nm.