Exploiting core–shell and core–alloy interfaces for asymmetric growth of nanoparticles

Abstract

The alloy phase behavior of nanoparticle (NP) interfaces has been used to tailor asymmetric growth. Using either Au–Pd core–shell or Au–Au_xPd_1−x core–alloy NP starting materials, the deposition of Ag resulted in asymmetric and symmetric growth respectively. The phase segregation of the interface was confirmed by TEM and electrocatalytic activity.