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Preparation of Nanosize Tin Oxide Particles from Water-in-Oil Microemulsions

✍ Scribed by Ki Chang Song*; Jong Huy Kim

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 407 KB
Volume: 212
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.1998.6022

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✦ Synopsis

Nanoparticles of tin oxide (SnO 2 ) have been prepared from water-in-oil microemulsions consisting of water, AOT (surfactant), and n-heptane (oil). Precursor hydroxides were precipitated in the aqueous cores of water-in-oil microemulsions and then calcined at 600°C for 2 h to form tin oxide powder. The formation of phase pure tin oxide was confirmed by means of X-ray diffraction analysis. The tin oxide powder was found to be less than 40 nm in particle diameter and to have a higher specific surface area, about 73 m 2 /g, when compared with tin oxide powder prepared through the conventional precipitation method (19 m 2 /g).

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