Preparation, Microstructure and Gas Sensing Properties of Nanosized SnO_2 Materials Made by Microemulsions

The application of microemulsion made of anion surfactants in preparing SnO2 naosized materials was studied, and the influence of different anion surfactants and assistant surfactants onthe mean grain size of nanosized SnO2 was also researched by XRD and TEM. It can be knownfrom the experimental results, monodispersed SnO2 nanosized materials with the mean grain sizeo f about 6urn and average partical size smaller than 20um can be obtained from the microemulsion composed of AES or K12 anion surfactant and butanol assistant surfactant, and it has highsensitivity without catalysts and additives.