ISSRNS 2012: Abstracts / Synchrotron Radiation in Natural Science Vol. 11, No 1 – 2 (2012) P 41
ROD-LIKE MORPHOLOGY OF SILVER NANOPARTICLES PRODUCED IN CATIONIC GEMINI SURFACTANTS SYSTEMS
M. Murawska1, K. Smolarek1, A. Skrzypczak2, and M. Kozak1∗
1Department of Macromolecular Physics, A. Mickiewicz University, Umultowska 85, 61-614 Pozna´n, Poland
2Faculty of Chemical Technology, Pozna´n University of Technology, Piotrowo 3, 60-965 Pozna´n, Poland Keywords: Au nanoparticles, gemini surfactants
∗e-mail : mkozak@amu.edu.pl
Silver nanoparticles have found a wide range of applications. Thanks to their bactericidal proper- ties they are used in a special lining of refrigerators, as components of cleaning agents, in water filters in the countries with problems in access to clean wa- ter [1]. Other applications of silver nanoparticles include their catalytic use [2], the use in real-time optical sensor [3] or as components of bionanosen- sors.
A typical reaction for the synthesis of silver nanoparticles in solution is similar to the Turkevich method [4]. The method proposed is a modifica- tion of the above method — we used Silver nitrate (AgNO3) as a silver precursor and trisodium cit- rate (Na3C6H5O7) as a reducer [5], with addition of a gemini surfactant 1,1’-(1,4-butan)bis3-dodecylo- xymethylimidazolium propionate (GC12P).
The nanoparticles obtained were characterized by transmission electron microscopy (TEM) and UV-Vis spectroscopy. For the silver nanoparticles solution obtained without the addition of gemini surfactant, we observed the plasmon resonance at the wavelength corresponding to the presence of sil- ver nanoparticles of sizes ranging from 5 – 100 nm.
TEM images show the presence of spherical, tetra- hedral and rod-like nanoparticles (Fig. 1).
Acknowledgments: The present study was carried out with financial support from the Ministry of Science and Higher Education (grant nr N N202 127237).
References
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[3] A.D. McFarland, R.P.V. Duyne, “Single silver nanoparticles as real-time optical sensors with zeptomole sensitivity,” Nano Lett. 3(8) (2003) 1057 – 1062.
[4] J. Turkevich, P.C. Stevenson, J. Hillier, “A study of the nucleation and growth processes in the synthesis of colloidal gold,” Discuss Faraday Soc. 11 (1951) 55 – 75.
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Figure 1 : TEM images of sil- ver nanoparticles obtained with the addition of surfactant GC12P.
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