Synthesis and characterization of fatty acids passivated silver nanoparticles—their interaction with PPy
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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Title |
Synthesis and characterization of fatty acids passivated silver nanoparticles—their interaction with PPy
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Creator |
Chepurirao, R.K.
Trivedi, D.C. |
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Subject |
Functional Materials
Nanotechnology |
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Description |
Metal nanoparticles have applications in the area of catalysis, opto-electronics due to their size dependent optical, electrical and electronic
properties. It is believed that when the size of the particle tuned to one nanometer, the quantum effect is expected in their optical properties. Silver
nanoparticles exhibit size dependant absorptions in the UV–vis region and also show anti-bacterial properties. In the present paper, we report
the synthesis of silver nanoparticles passivated by stearic, palmitic and lauric acids. Three reducing agents, which are moderate strong to mild,
formaldehyde, dimethyl formamide and triethanol amine are used to synthesize the nanoparticles as solids. The solids are redispersible in non-polar
solvents. The IR spectra showed the existence of adsorbed fatty acids. It is shown that the stability of the silver nanoparticles in toluene solvent is
decreased when the chain length of the fatty acid is decreased. The toluene solution of these nanoparticles exhibited a surface plasmon resonanace
in the range 420–462 nm. Results showed that use of triethanol amine is the best choice in obtaining lower particle sizes. The nanoparticles are
charecterized by UV–vis, FTIR, XRD and AFM techniques. The interaction of these particles with the conducting polymer PPy is explored.
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Publisher |
Elsevier
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Date |
2005
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Type |
Article
PeerReviewed |
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Format |
application/pdf
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Identifier |
http://cecri.csircentral.net/202/1/103-2005.pdf
Chepurirao, R.K. and Trivedi, D.C. (2005) Synthesis and characterization of fatty acids passivated silver nanoparticles—their interaction with PPy. Synthetic Metals, 155 (2). pp. 324-327. |
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Relation |
http://cecri.csircentral.net/202/
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