Particle and Aerosol Research Vol. 2, No. 1, March 2006 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Synthesis of the charged silver nanoparticles by a supersonic nozzle expansion method with ion nuclei
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Abstracts
The synthesis of charged silver nanoparticles by a supersonic nozzle expansion method with ion nuclei was
investigated. In order to supply ions in the developed nanoparticles generator, sonic-jet corona discharger was used
as an ionizer. Corona discharge ions function as seeds for heterogeneous nucleation in the silver nanoparticle
formation process and provide silver nanoparticles with a repulsive electrical force that prevents aggregation of the
particles. For detailed analysis of generated nanoparticles properties such as size, morphology, composition and
charge, sampled nanoparticles have been investigated by means of transmission electron microscope, X-ray
diffraction analysis, energy dispersive spectroscopy and Faraday cup current measurement. Upon application of the
corona discharge ions, the mean diameter and standard deviation of the produced particles decrease. And, charged
and non-agglomerated silver nanoparticles can be synthesized.
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