Synthesis of Ag Core @ Au Shell Composite Nanoparticles by Spontaneous Deposit Au on the Surface of Ag Seeds

Abstract:

A new synthesis of Ag @ Au core-shell composite nanoparticles (NPs) was described by spontaneous deposit Au on the surface of Ag seeds which were prepared with the photochemical method in sodium citrate solution. The Ag core @ Au shell (or Ag core @ Au-Ag alloy shell) composite NPs with monodisperse and uniform shape were about 10 nm. The core/shell nanostructure was confirmed by UV-vis spectrum and TEM characterization as well as cyanide ion (CN-) dissolution experiment. The reaction mechanism of forming Ag @ Au composite NPs was briefly discussed.

• Periodical: Applied Mechanics and Materials (Volumes 110-116)
• Pages: 1030-1035
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.110-116.1030
• Online since: October 2011
• Authors: Ying Nan Dong, Shouan Dong, Zai Fu Pan, Ming Li Xu
• Keywords: Ag Core-Au Shell, Ag Seed, Composite Nanostructure, Cyanide Ion

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