Shuttling single metal atom into and out of a metal nanoparticle.

ABSTRACT: It has long been a challenge to dope metal nanoparticles with a specific number of heterometal atoms at specific positions. This becomes even more challenging if the heterometal belongs to the same group as the host metal because of the high tendency of forming a distribution of alloy nanoparticles with different numbers of dopants due to the similarities of metals in outmost electron configuration. Herein we report a new strategy for shuttling a single Ag or Cu atom into a centrally hollow, rod-shaped Au₂₄ nanoparticle, forming AgAu₂₄ and CuAu₂₄ nanoparticles in a highly controllable manner. Through a combined approach of experiment and theory, we explain the shuttling pathways of single dopants into and out of the nanoparticles. This study shows that the

SUBMITTER: Wang S 

PROVIDER: S-EPMC5635118 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature