Nano Archive

A simple method for the preparation of colloidal polymer-supported silver nanoparticles

Racles, Carmen and Stoica, Iuliana and Doroftei, Florica and Cozan, Vasile (2011) A simple method for the preparation of colloidal polymer-supported silver nanoparticles. Journal of Nanoparticle Research, 13 (12). pp. 6971-6980.

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Polysulfone−silver composite nanoparticles have been prepared by combining polymer nanoprecipitation and redox synthesis of silver, in the presence of a glucose-modified cyclosiloxane as stabilizing agent. Based on previous kinetic investigations and on model reactions, we concluded that the reducing agent in this case is the tetrahydrofuran (THF) used as solvent for polysulfone. Dynamic light scattering measurements on the obtained polymer-silver composite particles indicated particle average diameter of 176 nm with a polydispersity index of 0.25. The UV–vis spectrum exhibited the silver plasmon resonance. By different microscopic methods (atomic force microscopy—AFM, high resolution transmission electron microscopy—HRTEM, and scanning electron microscopy—SEM), larger polymer particles coated with silver nanoprticles were observed. The Energy Dispersive X-Ray analysis—EDX; confirmed the presence of Ag on the surface of the particles, while the selected area electron diffraction showed single crystalline silver nanospheres with face-centered cubic structure.

Item Type:Article
ID Code:11428
Deposited By:Prof. Alexey Ivanov
Deposited On:05 Jan 2012 09:29
Last Modified:05 Jan 2012 09:42

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