Redox-transmetalation process as a generalized synthetic strategy for core-shell magnetic nanoparticles

A redox-transmetalation process that is effective as a general protocol for the fabrication of high quality and well-defined core-shell type bimetallic nanoparticles on the sub-10 nm scale is presented. The nanostructures, magnetic properties and reaction byproducts of the core-shell nanomaterial including Co@Au, Co@Pd, Co@Pt and nanoparticles are spectroscopically characterized and identified to confirm the chemical process that promotes the core-shell structure formation.