Improved catalytic activity and surface electro-kinetics of bimetallic Au–Ag core–shell nanocomposites

The Au_core–Ag_shell and hollow Ag–Au alloy nanostructures significantly improved (∼2 times) the reduction of 1,3-dinitrobenzene relative to the monometallic ones demonstrating the role of the synergistic effect of the Au–Ag interface in catalytic activity.

An aerosol-seed-assisted hybrid chemical route to synthesize anisotropic bimetallic nanoparticles

Herein we report the development of anisotropic bimetallic nanoparticles where aerosol gold nanoparticles served as the seeds for the continuous deposition of silver atoms on their surfaces. Initially, aerosol gold nanoparticles were formed by spark discharge and then injected into a silver precursor solution in an impinging device. The gold nanoparticles acted as the seed particles, and catalyzed the reduction of the added silver ions in the presence of ultrasound to yield bimetallic (gold core-silver shell) anisotropic nanoparticles.