Carbon Embedding of Pt Cluster Superlattices Templated by Hexagonal Boron Nitride on Ir(111)
| Autor: | Simon Chung, Tobias Hartl, Daniel Herrmann, Andreas Stierle, Paolo Lacovig, Jan Knudsen, Pantelis Bampoulis, Vedran Vonk, Charlotte Herbig, Moritz Will, Virginia Boix de la Cruz, Philipp Valerius, Thomas Michely, Silvano Lizzit |
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| Přispěvatelé: | Physics of Interfaces and Nanomaterials, MESA+ Institute |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Annealing (metallurgy) Superlattice chemistry.chemical_element Electrocatalyst Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Crystallography General Energy X-ray photoelectron spectroscopy chemistry Amorphous carbon law Monolayer Physical and Theoretical Chemistry Scanning tunneling microscope Carbon |
| Zdroj: | Journal of physical chemistry C, 125(42), 23435-23444. American Chemical Society |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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