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Journal of Nanomaterials
Volume 2012, Article ID 792429, 5 pages
http://dx.doi.org/10.1155/2012/792429
Research Article

Effect of Variation in Voltage on the Synthesis of Ag Nanopowder by Pulsed Wire Evaporation

1Division of Advanced Materials Engineering and Institute for Rare Metals, Kongju National University, 275 Budae-Dong, Chungnam Cheonan 330-717, Republic of Korea
2Nano Technology Inc., 290-19 Daehwa, Daedeok, Daejeon Metropolitan City 306-801, Republic of Korea
3Department of Physics, Faculty of Art and Science, Gaziosmanpasa University, Tasliciftlik Campus, 60240 Tokat, Turkey

Received 7 November 2011; Accepted 22 December 2011

Academic Editor: Kin Tak Lau

Copyright © 2012 Joon-Woo Song et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nanosized Ag particles were obtained in liquid medium, which is composed of deionized water and sodium hexametaphosphate, using pulsed wire evaporation within hundreds of microseconds from pure initial Ag wire (99.98%), with varying voltage. Changes in powder morphology and microstructure due to change in supply voltage was observed by FE-SEM and HR-TEM, and phase structure of powders was analyzed by XRD. The results revealed that average particle size slightly increased with increasing supply voltage without any impurity and oxide phase, which was explained in terms of addition of stabilizer into the coolant liquid. The experimental results also suggest that addition of sodium hexametaphosphate into the coolant liquid is good for enhancing the dispersibility property of silver nanopowders.