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Preparation of silver particles by spray pyrolysis of silver-diammine complex solutions

Published online by Cambridge University Press:  31 January 2011

N. Kieda  and
G. L. Messing
N. Kieda
Affiliation:
Particulate Materials Center and Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
G. L. Messing
Affiliation:
Particulate Materials Center and Materials Research Laboratory, The Pennsylvania State University, University Park, Pennsylvania 16802
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Abstract

A novel precursor solution system, containing NH3 as a complexing agent, was used for the production of Ag powders by spray pyrolysis. Solutions of Ag2CO3, Ag2O, and AgNO3 with NH4HCO3 were used in this study. Ag powders were obtained at unexpectedly low temperatures, i.e., 400 °C or less. The Ag powders with a shell-like morphology were obtained from Ag2CO3 and Ag2O solutions, whereas dense Ag particles of about 1 μm diameter were obtained from AgNO3–NH4HCO3 solution. These morphologies are explained in terms of NH3 release during spray pyrolysis.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 6 , June 1998 , pp. 1660 - 1665
Copyright
Copyright © Materials Research Society 1998

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