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Title: Ag@Pd core-shell nanoparticles
Authors: Jose, Deepa
Jagirdar, Balaji R
Keywords: Nanoparticles
Bimetallic nanoparticles
Solvated metal atom dispersion
Digestive ripening
Core shell nanoparticles
Silver nanoparticles
Palladium nanoparticles
Silver colloid
Palladium colloid
Issue Date: Sep-2011
Publisher: NISCAIR-CSIR, India
Abstract: Colloids of silver and palladium nanoparticles have been prepared by the Solvated Metal Atom Dispersion method. The as-prepared Ag colloid consisting of polydisperse nanoparticles is transformed into a monodisperse colloid by the digestive ripening process which involves refluxing the as-prepared colloid in the presence of a surfactant. In addition to the monodisperse nanoparticles, a small amount of an Ag-thiolate complex is also formed. Refluxing a mixture of the as-prepared Ag and Pd colloids results in Ag@Pd core–shell nanoparticles. The core-shell structure has been established using a combination of techniques such as UV-visible spectroscopy, high resolution electron microscopy, energy filtered electron microscopy, energy dispersive X-ray analysis, high angle annular dark field imaging and powder X-ray diffraction.
Page(s): 1308-1317
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-0975(Online); 0376-4710(Print)
Source:IJC-A Vol.50A(09-10) [September-October 2011]

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