Carbon Embedding of Pt Cluster Superlattices Templated by Hexagonal Boron Nitride on Ir(111)

Tobias Hartl, Moritz Will, Pantelis Bampoulis, Daniel Herrmann, Philipp Valerius, Charlotte Herbig, Virginia Boix de la Cruz, Paolo Lacovig, Vedran Vonk, Simon Chung, Andreas Stierle, Silvano Lizzit, Jan Knudsen, Thomas Michely

Research output: Contribution to journalArticlepeer-review

Abstract

With the goal to delevop the fabrication of a new type of Pt-nanoparticle carbon-support electrocatalyst, we investigate the carbon embedding of Pt cluster superlattices grown on the moiré of a monolayer of hexagonal boron nitride (h-BN) on Ir(111). Our combined scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) study establishes conformal C embedding of the Pt clusters on h-BN/Ir(111) without deterioration of superlattice order, preferential and strong binding of the embedding carbon to the Pt clusters, and upon annealing the formation of a homogeneous amorphous carbon (a-C) matrix. There are indications that while the a-C matrix and the Pt clusters bind strongly to each other, upon annealing both weaken their binding to h-BN.

Original languageEnglish
Pages (from-to)23435-23444
Number of pages10
JournalJournal of Physical Chemistry C
Volume125
Issue number42
DOIs
Publication statusPublished - 2021 Oct 28

Subject classification (UKÄ)

  • Accelerator Physics and Instrumentation
  • Condensed Matter Physics

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