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Research Letters in Nanotechnology
Volume 2008, Article ID 756843, 4 pages
http://dx.doi.org/10.1155/2008/756843
Research Letter

Effect of Ammonium Nitrate on Nanoparticle Size Reduction

Department of Chemical Engineering, New Mexico State University, P.O. Box 30001, MSC 3805, Las Cruces, NM 88003, USA

Received 13 January 2008; Accepted 3 March 2008

Academic Editor: Ram B. Gupta

Copyright © 2008 Kalyana C. Pingali 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

Ammonium nitrate was added to the spraying solution as a foaming agent to reduce the particle size of nanoparticles synthesized in the spray-pyrolysis process. Ammonium nitrate was effective in breaking the aerosol droplet size and generating nanoparticles that were of approximately one order-of-magnitude (from 200 to 20 nm) smaller diameter than those created in the absence of ammonium nitrate in the feed solution. This technique makes it possible to control the particle diameter of metallic nanoparticles below 20 nm.