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Multilayer structures of graphene and Pt nanoparticles: a multiscale computational study

Authors
  • Nasiri, S
  • Greff, C
  • Wang, K
  • Yang, M
  • Li, Q
  • Moretti, P
  • Zaiser, M
Publication Date
Apr 01, 2020
Source
UPCommons. Portal del coneixement obert de la UPC
Keywords
License
Green
External links

Abstract

Multiscale simulation study results of multilayer structures consisting of graphene sheets with embedded Pt nanoparticles is reported. Density functional theory is used to understand the energetics of Pt–graphene interfaces and provide reference data for the parameterization of a Pt–graphene interaction potential. Molecular dynamics simulations then provide the conformation and energetics of graphene sheets with embedded Pt nanoparticles of varying density, form, and size. These results are interpreted using a continuum mechanical model of sheet deformation, and serve to parameterize a meso‐scale Monte Carlo model to investigate the question under which conditions the free volume around the Pt nanoparticles forms a percolating cluster, such that the structures can be used in catalytic applications. This article is concluded with a discussion of potential applications of such multilayer structures.

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