Synthesis and characterization of crystalline tin oxide nanoparticles

Monodisperse non-aggregated spheroidal nanoparticles of SnO2 cassiterite were prepared by hydrolysis of tin isopropoxide in the presence of acetylacetone and p-toluene sulphonic acid, followed by ageing at 60 C. The obtained sols remain stable for several months at 4 C. The nanoparticles were charac...

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Bibliographic Details
Published in:Journal of materials chemistry 2002-07, Vol.12 (8), p.2396-2400
Main Authors: DE MONREDON, Sophie, CELLOT, Antoine, RIBOT, Francois, SANCHEZ, Clément, ARMELAO, Lidia, GUENEAU, Lethicia, DELATTRE, Laurent
Format: Article
Language:English
Subjects:
Chemical Sciences
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Gels and sols
General and physical chemistry
Inorganic chemistry
Material chemistry
Materials science
Nanoscale materials and structures: fabrication and characterization
Physics
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Summary:Monodisperse non-aggregated spheroidal nanoparticles of SnO2 cassiterite were prepared by hydrolysis of tin isopropoxide in the presence of acetylacetone and p-toluene sulphonic acid, followed by ageing at 60 C. The obtained sols remain stable for several months at 4 C. The nanoparticles were characterised in the solid state (xerosol) by powder XRD, TEM, TGA-DTA, and 119Sn MAS and 13C 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-toluene sulphonates and water. 66 refs.
ISSN:0959-9428
1364-5501
DOI:10.1039/b203049g