Preparation of colloidal silver nanoparticles by chemical reduction method
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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 aggregation of silver nanoparticles. The TEM images showed that the particles were dispersed better with increasing the NaBH4 concentration.
Key wordsSilver Nanoparticles Chemical Reduction SDS UV-vis Absorption Spectra TEM
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- 4.X. Feng, H. Ma, S. Huang, W. Pan, X. Zhang, F. Tian, C. Cao, Y. Cheng and J. Luo, J. Phys. Chem. B., 110, 12311 (2006).Google Scholar