Tin Dioxide Nanoparticles
Tin (IV) oxide (SnO2) is also known as stannic oxide or cassiterite. Tin oxide is an amphoteric colorless solid with intriguing properties. SnO2 shows high optical transparency, high refractivity in the infrared region, high chemical and thermal stability. Furthermore, SnO2 is a wide bandgap semiconductor (≈3.6 eV). The crystal structure of tin oxide is in the rutile structure category meaning that in one unit cell, the tin (IV) ion is surrounded by 6 oxygen ions and every oxygen is bordered by 3 tin (IV) ions. The melting point of SnO2 nanoparticles changes between 1500-1630°C while the boiling point of the material changes between 1800-1900°C. The density of the compound is around 6.9±3 g/cm3. The particle sizes of tin oxide nanoparticles vary from a few nanometers to 100 nm with significantly high surface areas. The interesting properties of SnO2 are utilized in;
- Gas sensors,
- Dye-based solar cells,
- Li insertion electrodes,
- Photovoltaic devices and so on.