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ISRN Physical Chemistry
Volume 2013 (2013), Article ID 547378, 7 pages
http://dx.doi.org/10.1155/2013/547378
Research Article

Influence of Surfactants and Dissolved Gases on the Silver Nanoparticle Plasmon Resonance Absorption Spectra Formed by the Laser Ablation Processes

1Department of Materials Science, Nagaoka National College of Technology, Nagaoka, Niigata 940-2188, Japan
2Department of General Science, Hachinohe National College of Technology, Hachinohe, Aomori 039-1104, Japan

Received 10 April 2013; Accepted 15 May 2013

Academic Editors: D. Knopf, T. Panczyk, and S. Sasaki

Copyright © 2013 Ming Jing Chua and Yoshinori Murakami. 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 silver nanoparticles were fabricated by the focused laser irradiation to silver rod immersed in various kinds of surfactant aqueous solutions. It was found that anionic and cationic surfactants showed different roles on the silver nanoparticle growth during the focused laser irradiation processes. Silver nanoparticle synthesis in an amphoteric surfactant aqueous solution was also carried out using the same techniques, and it was found that the spectral shifts for these surface plasmon bands showed complicated behaviors against the concentration of amphoteric surfactants as well as pH. Furthermore, the influence of the gas dissolved in a solution on the silver nanoparticle growth during the focused laser irradiation processes was investigated. With increasing the gas pressure of CO2, the surface plasmon bands of silver nanoparticles were shifted to longer wavelength, suggesting that the dissolved gas of CO2 in a solution enhances the silver nanoparticle growth. The plausible mechanism was proposed to understand the reason of such enhancement of silver nanoparticle growth by increasing the dissolved gas in a solution.