期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 12, 期 8, 页码 2396-2400出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b203049g
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Monodisperse non-aggregated spheroidal nanoparticles of SnO2 cassiterite are prepared through hydrolysis of tin isopropoxide in the presence of acetylacetone and p-toluenesulfonic acid, followed by ageing at 60 degreesC. The obtained sols remain stable for several months at 4 degreesC. The nanoparticles have been characterized in the solid state (xerosol) by powder X-ray diffraction, TEM, FTIR, TGA-DTA, and Sn-119 MAS and C-13 CP-MAS NMR. The mean size of the cassiterite oxide core is about 1-2 nm. These particles do not aggregate in suspension because their surfaces are protected by an hybrid organic-inorganic layer containing acetylacetonate ligands, acetylacetone, p-toluenesulfonates and water.
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