Preparation of Ag Core–Cu Shell Nanoparticles by Microwave-assisted Alcohol Reduction Process

Abstract

We have succeeded in rapidly preparing Ag core-Cu shell nanoparticles (denoted as Cu/Ag nanoparticles) having 10-40 nm in size by a microwave (MW)-assisted alcohol reduction process. The core-shell nanoparticles were prepared by step-bystep successive reduction of a silver precursor and then of a copper precursor added after the formation of silver nanoparticles in 1-heptanol.

Controlling the Synthesis and Assembly of Silver Nanostructures for Plasmonic Applications

“…289 Applying a coating of a different material can also protect the core from extraneous chemical and physical changes, and in the case of Ag, eliminate the reactivity and toxicity of Ag 290–292 To date, a variety of Ag-based, bimetal core-shell nanostructures have been reported, including Ag@Au, 293–297 Au@Ag, 110,298–302 Ag@Ni, 303 Ag@Pd, 304 Ag@Pt, 305 Cu@Ag, 306,307 and Ag@Cu systems. 308,309 …”

Silver-Based Nanoparticles for Surface Plasmon Resonance in Organic Optoelectronics

“…The SPR peak of these alloy nanocages can be tuned from visible to NIR by varying the Ag/Au ratio. Various types of core–shell metal NPs have been reported including Ag–Au, Au–Ag, and Ag‐Cu …”

Barium ferrite powders prepared by microwave-induced hydrothermal reaction and magnetic property

“…Recently, our group has reported on preparation of monodispersed Ag and Cu nanoparticles with narrow size distribution under microwave irradiation [24][25][26]. For microwave synthesis, reactants were directly heated by microwave irradiation because microwaves have a characteristic heating mode through the interaction of oscillating electric and magnetic fields with substances.…”