A molecular dynamics study of the effect of the substrate on the thermodynamic properties of bound Pt–Cu bimetallic nanoclusters

Literature Information

Publication Date 2016-07-12
DOI 10.1039/C6CP04522G
Impact Factor 3.676
Authors

Hamed Akbarzadeh, Amir Nasser Shamkhali, Mohsen Abbaspour, Sirous Salemi, Zeinab Attaran


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Abstract

In this work confinement of the Pt708Cu707 bimetallic nanocluster in single-walled carbon, boron nitride, and silicon carbide nanotubes was investigated using molecular dynamics simulation. The results of the calculations showed that at 50% composition, a eutectic-like behavior is seen during the melting–freezing process. Also, the Pt708Cu707 bimetallic nanocluster tends to have a core–shell like structure with a Pt-rich core and a Cu-rich shell, except for boron nitride nanotubes in which the nanocluster exhibits a completely different pattern on the tube wall. The Pt–Cu nanoclusters confined in boron nitride nanotubes are extremely extended on the tube wall in such a way that most of the nanotube–nanocluster interface is covered by a monolayer metal coating which can promise unique physical and chemical properties for these types of nanocomposites. Also, extension of the nanocluster on the substrate surface reduces its melting point.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
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