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Microwave synthesis of a bimodal mixture of triangular plate and spheroidal silver nanoparticles

Published online by Cambridge University Press:  08 May 2015

Anneliese E. Laskowski ,
Daniel A. Decato ,
Mitchel S. Strandwitz  and
Jennifer A. Dahl
Anneliese E. Laskowski
Affiliation:
Materials Science Center, University of Wisconsin Eau Claire, 105 Garfield Avenue, Eau Claire, Wisconsin 54701, USA
Daniel A. Decato
Affiliation:
Materials Science Center, University of Wisconsin Eau Claire, 105 Garfield Avenue, Eau Claire, Wisconsin 54701, USA
Mitchel S. Strandwitz
Affiliation:
Materials Science Center, University of Wisconsin Eau Claire, 105 Garfield Avenue, Eau Claire, Wisconsin 54701, USA
Jennifer A. Dahl*
Affiliation:
Materials Science Center, University of Wisconsin Eau Claire, 105 Garfield Avenue, Eau Claire, Wisconsin 54701, USA
*
Address all correspondence Jennifer A. Dahl atdahljenn@uwec.edu
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Abstract

A bimodal mixture of silver nanoparticles consisting of spheres and triangular nanoplates was synthesized from silver nitrate (AgNO3) and polyvinylpyrrolidone with the aid of a microwave reactor system, reducing total reaction time from days to minutes; a specific shape-directing reagent was not used. It is known that freshly prepared solutions of AgNO3 contain a high population of Ag3+, while aged solutions contain fewer trimers. We propose that the product ratios of spheroidal to triangular particles are proportional to the relative population of trimers in solution prior to initiation of the microwave reaction.

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Type
Research Letters
Information
MRS Communications , Volume 5 , Issue 2 , June 2015 , pp. 311 - 317
Copyright
Copyright © Materials Research Society 2015 

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