Growth, stability, and electronic decoupling of Pt clusters on h-BN/Ir(111)
(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
- Will, Moritz ; Hartl, Tobias ; De La Cruz, Virginia Boix ; Lacovig, Paolo ; Lizzit, Silvano ; Knudsen, Jan LU ; Michely, Thomas and Bampoulis, Pantelis
- organization
- publishing date
- 2021-02
- 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}}, }