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Oxygen Storage by Tin Oxide Monolayers on Pt3Sn(111)

Merte, Lindsay R. LU ; Braud, Nicolas ; Bu, Lars ; Bisbo, Malthe Kjær ; Wallander, Harald J. LU ; Krisponeit, Jon Olaf ; Flege, Jan Ingo ; Hammer, Bjørk ; Falta, Jens and Lundgren, Edvin LU (2023) In Journal of Physical Chemistry C 127(6). p.2988-2994
Abstract

The high performance of platinum-Tin catalysts for oxidation reactions has been linked to the formation of tin oxides at the metal surface, but little is known about the structure of these oxides or the chemical behavior that determines their catalytic properties. We show here how surface oxides on Pt3Sn(111) incorporate oxygen at the metal interface, which may be subsequently removed by reaction with CO. The storage mechanism, where oxygen uptake occurs without loss of interfacial Pt-Sn bonds, is enabled by the peculiar asymmetrical coordination state of Sn2+. O atoms are bound at pocket sites in the 2D oxide sheet between these outward-buckled Sn atoms and metallic Sn in the alloy surface below.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physical Chemistry C
volume
127
issue
6
pages
2988 - 2994
publisher
The American Chemical Society (ACS)
external identifiers
  • scopus:85147866272
ISSN
1932-7447
DOI
10.1021/acs.jpcc.2c09041
language
English
LU publication?
yes
id
bb027a9f-4eea-4378-a5fe-c6e83d22a37b
date added to LUP
2023-02-20 14:22:09
date last changed
2023-11-21 06:57:03
@article{bb027a9f-4eea-4378-a5fe-c6e83d22a37b,
  abstract     = {{<p>The high performance of platinum-Tin catalysts for oxidation reactions has been linked to the formation of tin oxides at the metal surface, but little is known about the structure of these oxides or the chemical behavior that determines their catalytic properties. We show here how surface oxides on Pt3Sn(111) incorporate oxygen at the metal interface, which may be subsequently removed by reaction with CO. The storage mechanism, where oxygen uptake occurs without loss of interfacial Pt-Sn bonds, is enabled by the peculiar asymmetrical coordination state of Sn2+. O atoms are bound at pocket sites in the 2D oxide sheet between these outward-buckled Sn atoms and metallic Sn in the alloy surface below.</p>}},
  author       = {{Merte, Lindsay R. and Braud, Nicolas and Bu, Lars and Bisbo, Malthe Kjær and Wallander, Harald J. and Krisponeit, Jon Olaf and Flege, Jan Ingo and Hammer, Bjørk and Falta, Jens and Lundgren, Edvin}},
  issn         = {{1932-7447}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{2988--2994}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Journal of Physical Chemistry C}},
  title        = {{Oxygen Storage by Tin Oxide Monolayers on Pt<sub>3</sub>Sn(111)}},
  url          = {{http://dx.doi.org/10.1021/acs.jpcc.2c09041}},
  doi          = {{10.1021/acs.jpcc.2c09041}},
  volume       = {{127}},
  year         = {{2023}},
}