THE METHOD OF PREPARATION OF NANOCOLLOIDAL SnO2 WATERSOL AND ITS USES

摘要

The present invention concerns nano colloidal water-sol of SnO2, and its use in the preparation of microspheres, micro and nano containers or solid and liquid filled microcapsules. According to the method firstly the stannic oxide is mixed with alcohol and the obtained mixture is poured quickly into the water. The resulting precipitate is transformed into homogeneous liquid whereas the alcohol is removed during transforming process. The aqueous solution is purified with alcohol and concentrated in vacuum at a temperature of 70-85 °C until the water solution becomes viscous syrop-like emulsion of the precursor.