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Received June 25, 2008
Accepted August 6, 2008
- This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Preparation of colloidal silver nanoparticles by chemical reduction method
Department of Chemical and Biochemical Engineering, Konyang University, 26 Naedong, Nonsan, Chungnam 320-711, Korea 1Korea Institute of Energy Research, 71-2 Jangdong, Yuseong-gu, Daejeon 305-343, Korea
bslee@kier.re.kr
Korean Journal of Chemical Engineering, January 2009, 26(1), 153-155(3), 10.1007/s11814-009-0024-y
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Abstract
Colloidal silver nanoparticles were obtained by chemical reduction of silver nitrate in water with sodium borohydride (NaBH4) in the presence of sodium dodecyl sulfate (SDS) as a stabilizer. The obtained nanoparticles were characterized by their UV-vis absorption spectra and transmission electron micrograph (TEM) images. The UV-vis absorption spectra showed that NaBH4 served not only as a reducing agent but also as a stabilizer, which protects the_x000D_
aggregation of silver nanoparticles. The TEM images showed that the particles were dispersed better with increasing the NaBH4 concentration.
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