Publication
Applied Physics Letters
Paper

Surface segregation of bimetallic alloys in nanoscale confinement

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Abstract

The surface segregation of Pt atoms in liquid bimetallic alloys confined in carbon nanotube cavities was studied using molecular dynamics simulations. Considerable enrichment in the Pt-atom surface density was found to occur in Pt alloys, when the complementary metal has surface energy higher than Pt and simultaneously metal-wall interaction strength lower than that of Pt with the confining wall. The results suggest that solidification of liquid binary alloys in nanochannels could produce core-shell nanorods with the shell enriched in one of the components for catalytic and other applications. © 2010 American Institute of Physics.

Date

12 Oct 2010

Publication

Applied Physics Letters

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