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Journal of Nanomaterials
Volume 2010, Article ID 634757, 9 pages
http://dx.doi.org/10.1155/2010/634757
Research Article

Study of Ag and Au Nanoparticles Synthesized by Arc Discharge in Deionized Water

1Department of Mechanical Engineering, National Taipei University of Technology, 1 Sec. 3, Chung-Hsiao East Rd., Taipei 10608, Taiwan
2Institute of Automation Technology, National Taipei University of Technology, 1 Sec. 3, Chung-Hsiao East Rd., Taipei 10608, Taiwan

Received 15 June 2010; Accepted 5 September 2010

Academic Editor: Sherine Obare

Copyright © 2010 Der-Chi Tien 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

The paper presents a study of Ag and Au nanofluids synthesized by the arc discharge method (ADM) in deionized water. The metallic Ag nanoparticle () and ionic Ag () have played an important role in the battle against germs which are becoming more drug-resistant every year. Our study indicates that Ag nanoparticle suspension (SNPS) fabricated by using ADM without added surfactants exclusively contains the metallic Ag nanoparticle and ionic Ag. Besides that, the ADM in deionized water has also been employed for the fabrication process of Au nanoparticles. The experimental results indicate that the prepared Ag nanoparticles can react with the dissolved in deionized water, leading to the formation of . Significantly different to Ag, the prepared Au nanoparticles with their surfaces bonded by oxygen are suspended in deionized water by the formation of hydrogen bonded with the neighboring water molecules.