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Prospects for the expansion of standing wave ambient pressure photoemission spectroscopy to reactions at elevated temperatures

Karslloǧlu, Osman ; Trotochaud, Lena ; Salmassi, Farhad ; Gullikson, Eric M. ; Shavorskiy, Andrey LU ; Nemšák, Slavomir and Bluhm, Hendrik (2022) In Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films 40(1).
Abstract

Standing wave ambient pressure photoemission spectroscopy (SWAPPS) is a promising method to investigate chemical and potential gradients across solid-vapor and solid-liquid interfaces under close-to-realistic environmental conditions, far away from high vacuum. Until now, these investigations have been performed only near room temperature, but for a wide range of interfacial processes, chief among them being heterogeneous catalysis, measurements at elevated temperatures are required. One concern in these investigations is the temperature stability of the multilayer mirrors, which generate the standing wave field. At elevated temperatures, degradation of the multilayer mirror due to, for example, interdiffusion between the adjacent... (More)

Standing wave ambient pressure photoemission spectroscopy (SWAPPS) is a promising method to investigate chemical and potential gradients across solid-vapor and solid-liquid interfaces under close-to-realistic environmental conditions, far away from high vacuum. Until now, these investigations have been performed only near room temperature, but for a wide range of interfacial processes, chief among them being heterogeneous catalysis, measurements at elevated temperatures are required. One concern in these investigations is the temperature stability of the multilayer mirrors, which generate the standing wave field. At elevated temperatures, degradation of the multilayer mirror due to, for example, interdiffusion between the adjacent layers, decreases the modulation of the standing wave field, thus rendering SWAPPS experiments much harder to perform. Here, we show that multilayer mirrors consisting of alternate B4C and W layers are stable at temperatures exceeding 600 °C and are, thus, promising candidates for future studies of surface and subsurface species in heterogeneous catalytic reactions using SWAPPS.

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organization
publishing date
type
Contribution to journal
publication status
published
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in
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
volume
40
issue
1
article number
013207
publisher
American Institute of Physics (AIP)
external identifiers
  • scopus:85120732250
ISSN
0734-2101
DOI
10.1116/6.0001353
language
English
LU publication?
yes
additional info
Funding Information: The ALS is supported by the Director, Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy at the Lawrence Berkeley National Laboratory under Contract No. DE-AC02-05CH11231. H.B., O.K., and A.S. acknowledge support by the Director, Office of Science, Office of Basic Energy Sciences, and by the Division of Chemical Sciences, Geosciences, and Biosciences of the U.S. Department of Energy at the Lawrence Berkeley National Laboratory under Contract No. DE-AC02-05CH11231. Publisher Copyright: © 2021 Author(s).
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5386619b-d403-44a9-b6ac-842379c2948c
date added to LUP
2022-12-30 12:50:45
date last changed
2022-12-30 12:50:45
@article{5386619b-d403-44a9-b6ac-842379c2948c,
  abstract     = {{<p>Standing wave ambient pressure photoemission spectroscopy (SWAPPS) is a promising method to investigate chemical and potential gradients across solid-vapor and solid-liquid interfaces under close-to-realistic environmental conditions, far away from high vacuum. Until now, these investigations have been performed only near room temperature, but for a wide range of interfacial processes, chief among them being heterogeneous catalysis, measurements at elevated temperatures are required. One concern in these investigations is the temperature stability of the multilayer mirrors, which generate the standing wave field. At elevated temperatures, degradation of the multilayer mirror due to, for example, interdiffusion between the adjacent layers, decreases the modulation of the standing wave field, thus rendering SWAPPS experiments much harder to perform. Here, we show that multilayer mirrors consisting of alternate B4C and W layers are stable at temperatures exceeding 600 °C and are, thus, promising candidates for future studies of surface and subsurface species in heterogeneous catalytic reactions using SWAPPS.</p>}},
  author       = {{Karslloǧlu, Osman and Trotochaud, Lena and Salmassi, Farhad and Gullikson, Eric M. and Shavorskiy, Andrey and Nemšák, Slavomir and Bluhm, Hendrik}},
  issn         = {{0734-2101}},
  language     = {{eng}},
  month        = {{01}},
  number       = {{1}},
  publisher    = {{American Institute of Physics (AIP)}},
  series       = {{Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films}},
  title        = {{Prospects for the expansion of standing wave ambient pressure photoemission spectroscopy to reactions at elevated temperatures}},
  url          = {{http://dx.doi.org/10.1116/6.0001353}},
  doi          = {{10.1116/6.0001353}},
  volume       = {{40}},
  year         = {{2022}},
}