Synthesis and characterization of Co@Ag core-shell nanoparticles

Garcia-Torres, J, Vallés, E and Gómez, E (2010) Synthesis and characterization of Co@Ag core-shell nanoparticles Journal of Nanoparticle Research, 12 (6). pp. 2189-2199.

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Abstract

A micellar method has been used to prepare silver-coated cobalt (Co@Ag) nanoparticles. The synthesized particles have been deeply characterized by several methods, i.e., XRD, UV-Vis, TEM, XPS, and electrochemical techniques. There is every indication that the obtained particles show a truly core-shell structure. All the nanoparticles obtained under different conditions are in the size range 3-5 nm. High-resolution TEM (HRTEM), Fast Fourier Transformation (FFT), and Selected Area Electron Diffraction (SAED) indicated that the presence of hcp-Co and fcc-Ag, in which cobalt is located in the central area; meanwhile silver is at the edges of the nanoparticle. The absorption band of the Co@Ag colloid shifts to a longer wavelength and broadens relative to that of pure silver colloid. Voltammetric characterization allowed to determine the coverage of the cobalt core. © 2009 Springer Science+Business Media B.V.

Item Type:	Article
Divisions :	Surrey research (other units)
Authors :	Garcia-Torres, J, Vallés, E and Gómez, E
Date :	1 August 2010
DOI :	10.1007/s11051-009-9784-x
Depositing User :	Symplectic Elements
Date Deposited :	17 May 2017 13:20
Last Modified :	24 Jan 2020 23:49
URI:	http://epubs.surrey.ac.uk/id/eprint/838856

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