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Well-defined colloidal tin(IV) oxide particles

Published online by Cambridge University Press:  31 January 2011

Manuel Ocaña  and
Egon Matijević
Manuel Ocaña
Affiliation:
Department of Chemistry, Clarkson University, Potsdam, New York 13699
Egon Matijević
Affiliation:
Department of Chemistry, Clarkson University, Potsdam, New York 13699
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Abstract

Spherical and rod-like SnO2 particles of narrow size distribution have been obtained by aging at 100°C acidified tin(IV) chloride solutions in the presence of urea or formamide. It was shown that spherical particles, the x-ray diffraction of which was characteristic of cassiterite, consisted of a large number of much smaller subunits. The rod-like particles had the same structure, but of higher degree of crystallinity. Infrared spectra of these powders were evaluated in terms of the theory of the average dielectric constant (TADC), in order to gain additional information on the particle morphology and the state of aggregation.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 5 , May 1990 , pp. 1083 - 1091
Copyright
Copyright © Materials Research Society 1990

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References

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