• 文献标题:   Pt-38 cluster on OH- and COOH-functionalised graphene as a model for Pt/C-catalysts
  • 文献类型:   Article
  • 作  者:   MATSUTSU M, PETERSEN MA, VAN STEEN E
  • 作者关键词:  
  • 出版物名称:   PHYSICAL CHEMISTRY CHEMICAL PHYSICS
  • ISSN:   1463-9076 EI 1463-9084
  • 通讯作者地址:   Ctr Catalysis Res
  • 被引频次:   2
  • DOI:   10.1039/c6cp04111f
  • 出版年:   2016

▎ 摘  要

The binding of a Pt-38-cluster on pristine graphene, mono-vacancy graphene, OH-and COOH-functionalised graphene has been investigated using DFT-calculations. Graphene containing a mono-vacancy site or OH and COOH functional groups on graphene anchor the Pt-38-cluster more strongly than pristine graphene. The most favoured adsorption geometry for the cluster depends on the number of Pt-C bonds generated and the required distortion of the interacting facet. Adsorption of the cluster is associated with charge transfer between (functionalised) graphene and the Pt-38-cluster, a localised charge re-distribution within the cluster and shift in the d-band centre. The modified electronic properties of the supported Pt-38-cluster would imply a change in the reactivity of these supported Pt-38-clusters towards adsorbates depending on the type of defect present in the support.