Electrochemical method for the synthesis of silver nanoparticles |
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Authors: | Rashid A Khaydarov Renat R Khaydarov Olga Gapurova Yuri Estrin Thomas Scheper |
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Institution: | (1) Institute of Nuclear Physics, Uzbekistan Academy of Sciences, Tashkent, Uzbekistan;(2) ARC Centre of Excellence for Design in Light Metals, Department of Materials Engineering, Monash University and CSIRO Division of Materials Science and Engineering, Clayton, VIC, Australia;(3) Institute of Technical Chemistry, Leibniz University, Hannover, Germany |
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Abstract: | The article deals with a novel electrochemical method of preparing long-lived silver nanoparticles suspended in aqueous solution
as well as silver powders. The method does not involve the use of any chemical stabilising agents. The morphology of the silver
nanoparticles obtained was studied using transmission electron microscopy, scanning electron microscopy, atomic force microscopy
and dynamic light scattering measurements. Silver nanoparticles suspended in water solution that were produced by the present
technique are nearly spherical and their size distribution lies in the range of 2 to 20 nm, the average size being about 7 nm.
Silver nanoparticles synthesised by the proposed method were sufficiently stable for more than 7 years even under ambient
conditions. Silver crystal growth on the surface of the cathode in the electrochemical process used was shown to result in
micron-sized structures consisting of agglomerated silver nanoparticles with the sizes below 40 nm. |
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Keywords: | Silver Nanoparticle PVP Electrochemical synthesis Colloids |
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