Facile Synthesis of Nicore - Agshell Bimetallic Nano Particles for Conductive Paste

摘要

Ni-Ag core-shell nano particles have been facilely prepared by redox-transmetalation reaction of silver ions on the surface of nickle nano particles. As characterized by transmission electron microscopy (TEM), the as-synthesized core-shell particles were mono-dispersed and exhibited a narrow size distribution ranging from 200nm to 300nm. XRD analyses indicated both Ni core and Ag shell had an fcc structure. Furthermore, the thickness of silver shell was controllable via changing the mole ratio of Ag to Ni, which could show benefits for potential applications in optical, catalytic and electronic fields.