Prospects for the expansion of standing wave ambient pressure photoemission spectroscopy to reactions at elevated temperatures
(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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- author
- Karslloǧlu, Osman ; Trotochaud, Lena ; Salmassi, Farhad ; Gullikson, Eric M. ; Shavorskiy, Andrey LU ; Nemšák, Slavomir and Bluhm, Hendrik
- organization
- publishing date
- 2022-01-01
- type
- Contribution to journal
- publication status
- published
- subject
- 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).
- id
- 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}}, }