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Growth, stability, and electronic decoupling of Pt clusters on h-BN/Ir(111)

Will, Moritz ; Hartl, Tobias ; De La Cruz, Virginia Boix ; Lacovig, Paolo ; Lizzit, Silvano ; Knudsen, Jan LU ; Michely, Thomas and Bampoulis, Pantelis (2021) In Journal of Physical Chemistry C 125(7). p.3880-3889
Abstract

Motivated by the relevance of Pt clusters in heterogeneous catalysis, ordered Pt cluster superlattices are templated by the moiré of monolayer hexagonal boron nitride (h-BN) with Ir(111). Using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and scanning tunneling spectroscopy, we provide a comprehensive picture for the mechanism of cluster binding, the thermal stability of clusters, cluster superlattice decay, the morphological evolution of cluster shape with size, and finally Pt cluster decoupling and internal electronic structure. The key findings are that the Pt cluster superlattices on h-BN on Ir(111) are thermally more stable than any other Pt cluster superlattice, are well decoupled from their substrate, and... (More)

Motivated by the relevance of Pt clusters in heterogeneous catalysis, ordered Pt cluster superlattices are templated by the moiré of monolayer hexagonal boron nitride (h-BN) with Ir(111). Using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and scanning tunneling spectroscopy, we provide a comprehensive picture for the mechanism of cluster binding, the thermal stability of clusters, cluster superlattice decay, the morphological evolution of cluster shape with size, and finally Pt cluster decoupling and internal electronic structure. The key findings are that the Pt cluster superlattices on h-BN on Ir(111) are thermally more stable than any other Pt cluster superlattice, are well decoupled from their substrate, and display a discrete cluster height-dependent electronic structure.

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author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
125
issue
7
pages
10 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85101548205
ISSN
1932-7447
DOI
10.1021/acs.jpcc.0c10136
language
English
LU publication?
yes
id
89697040-f95f-475e-9c3c-5803d283385f
date added to LUP
2021-12-27 13:36:42
date last changed
2022-04-27 06:55:16
@article{89697040-f95f-475e-9c3c-5803d283385f,
  abstract     = {{<p>Motivated by the relevance of Pt clusters in heterogeneous catalysis, ordered Pt cluster superlattices are templated by the moiré of monolayer hexagonal boron nitride (h-BN) with Ir(111). Using X-ray photoelectron spectroscopy, scanning tunneling microscopy, and scanning tunneling spectroscopy, we provide a comprehensive picture for the mechanism of cluster binding, the thermal stability of clusters, cluster superlattice decay, the morphological evolution of cluster shape with size, and finally Pt cluster decoupling and internal electronic structure. The key findings are that the Pt cluster superlattices on h-BN on Ir(111) are thermally more stable than any other Pt cluster superlattice, are well decoupled from their substrate, and display a discrete cluster height-dependent electronic structure. </p>}},
  author       = {{Will, Moritz and Hartl, Tobias and De La Cruz, Virginia Boix and Lacovig, Paolo and Lizzit, Silvano and Knudsen, Jan and Michely, Thomas and Bampoulis, Pantelis}},
  issn         = {{1932-7447}},
  language     = {{eng}},
  number       = {{7}},
  pages        = {{3880--3889}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry C}},
  title        = {{Growth, stability, and electronic decoupling of Pt clusters on h-BN/Ir(111)}},
  url          = {{http://dx.doi.org/10.1021/acs.jpcc.0c10136}},
  doi          = {{10.1021/acs.jpcc.0c10136}},
  volume       = {{125}},
  year         = {{2021}},
}