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Operando Reflectance Microscopy on Polycrystalline Surfaces in Thermal Catalysis, Electrocatalysis, and Corrosion

Pfaff, Sebastian LU ; Larsson, Alfred LU ; Orlov, Dmytro LU orcid ; Harlow, Gary S LU ; Abbondanza, Giuseppe LU ; Linpé, Weronica LU ; Rämisch, Lisa LU ; Gericke, Sabrina M LU ; Zetterberg, Johan LU orcid and Lundgren, Edvin LU (2021) In ACS applied materials & interfaces 13(16). p.19530-19540
Abstract

We have developed a microscope with a spatial resolution of 5 μm, which can be used to image the two-dimensional surface optical reflectance (2D-SOR) of polycrystalline samples in operando conditions. Within the field of surface science, operando tools that give information about the surface structure or chemistry of a sample under realistic experimental conditions have proven to be very valuable to understand the intrinsic reaction mechanisms in thermal catalysis, electrocatalysis, and corrosion science. To study heterogeneous surfaces in situ, the experimental technique must both have spatial resolution and be able to probe through gas or electrolyte. Traditional electron-based surface science techniques are difficult to use under... (More)

We have developed a microscope with a spatial resolution of 5 μm, which can be used to image the two-dimensional surface optical reflectance (2D-SOR) of polycrystalline samples in operando conditions. Within the field of surface science, operando tools that give information about the surface structure or chemistry of a sample under realistic experimental conditions have proven to be very valuable to understand the intrinsic reaction mechanisms in thermal catalysis, electrocatalysis, and corrosion science. To study heterogeneous surfaces in situ, the experimental technique must both have spatial resolution and be able to probe through gas or electrolyte. Traditional electron-based surface science techniques are difficult to use under high gas pressure conditions or in an electrolyte due to the short mean free path of electrons. Since it uses visible light, SOR can easily be used under high gas pressure conditions and in the presence of an electrolyte. In this work, we use SOR in combination with a light microscope to gain information about the surface under realistic experimental conditions. We demonstrate this by studying the different grains of three polycrystalline samples: Pd during CO oxidation, Au in electrocatalysis, and duplex stainless steel in corrosion. Optical light-based techniques such as SOR could prove to be a good alternative or addition to more complicated techniques in improving our understanding of complex polycrystalline surfaces with operando measurements.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
ACS applied materials & interfaces
volume
13
issue
16
pages
11 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:33870682
  • scopus:85105073771
ISSN
1944-8244
DOI
10.1021/acsami.1c04961
project
Combined techniques for studies of catalysis
language
English
LU publication?
yes
id
6efaf938-58ac-4033-9042-34e19d87a8e4
date added to LUP
2021-04-24 21:08:16
date last changed
2024-06-15 10:17:37
@article{6efaf938-58ac-4033-9042-34e19d87a8e4,
  abstract     = {{<p>We have developed a microscope with a spatial resolution of 5 μm, which can be used to image the two-dimensional surface optical reflectance (2D-SOR) of polycrystalline samples in operando conditions. Within the field of surface science, operando tools that give information about the surface structure or chemistry of a sample under realistic experimental conditions have proven to be very valuable to understand the intrinsic reaction mechanisms in thermal catalysis, electrocatalysis, and corrosion science. To study heterogeneous surfaces in situ, the experimental technique must both have spatial resolution and be able to probe through gas or electrolyte. Traditional electron-based surface science techniques are difficult to use under high gas pressure conditions or in an electrolyte due to the short mean free path of electrons. Since it uses visible light, SOR can easily be used under high gas pressure conditions and in the presence of an electrolyte. In this work, we use SOR in combination with a light microscope to gain information about the surface under realistic experimental conditions. We demonstrate this by studying the different grains of three polycrystalline samples: Pd during CO oxidation, Au in electrocatalysis, and duplex stainless steel in corrosion. Optical light-based techniques such as SOR could prove to be a good alternative or addition to more complicated techniques in improving our understanding of complex polycrystalline surfaces with operando measurements.</p>}},
  author       = {{Pfaff, Sebastian and Larsson, Alfred and Orlov, Dmytro and Harlow, Gary S and Abbondanza, Giuseppe and Linpé, Weronica and Rämisch, Lisa and Gericke, Sabrina M and Zetterberg, Johan and Lundgren, Edvin}},
  issn         = {{1944-8244}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{16}},
  pages        = {{19530--19540}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{ACS applied materials & interfaces}},
  title        = {{Operando Reflectance Microscopy on Polycrystalline Surfaces in Thermal Catalysis, Electrocatalysis, and Corrosion}},
  url          = {{http://dx.doi.org/10.1021/acsami.1c04961}},
  doi          = {{10.1021/acsami.1c04961}},
  volume       = {{13}},
  year         = {{2021}},
}