Ag@Pd core-shell nanoparticles

作者：Jose Deepa; Jagirdar Balaji R^*

来源：Indian Journal of Chemistry - Section A: Inorganic, Physical, Theoretical and Analytical Chemistry , 2011, 50(9-10): 1308-1317.

• Nanoparticles
• Bimetallic nanoparticles
• Colloids
• Solvated metal atom dispersion
• Digestive ripening
• Core shell nanoparticles
• Silver nanoparticles
• Palladium nanoparticles
• Silver colloid
• Palladium colloid

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.

• 出版日期2011-10