Revisiting Optical Reflectance from Au(111) Electrode Surfaces with Combined High-Energy Surface X-ray Diffraction
Linpé, Weronica LU ; Rämisch, Lisa LU ; Abbondanza, Giuseppe LU ; Larsson, Alfred LU ; Pfaff, Sebastian LU ; Jacobse, Leon ; Zetterberg, Johan LU
; Merte, Lindsay
LU
; Stierle, Andreas
and Hegedues, Zoltan
, et al.
(2021)
In Journal of the Electrochemical Society
168(9).
- Abstract
- We have combined high-energy surface X-ray diffraction (HESXRD) with 2D surface optical reflectance (2D-SOR) to perform in situ electrochemical measurements of a Au(111) electrode in 0.1 M HClO4 electrolyte. We show that electrochemically induced changes to Au(111) surface during cyclic voltammetry can be simultaneously observed with 2D-SOR and HESXRD. We discuss how small one atom high 1x1 islands, accommodating excess atoms after the lifting of the surface reconstruction, can lead to discrepancies between the two techniques. The use of HESXRD allows us to simultaneously detect parts of the truncation rods from the (1 × 1) surface termination and the p x √3 electrochemically induced surface reconstruction, during cyclic voltammetry. The... (More)
- We have combined high-energy surface X-ray diffraction (HESXRD) with 2D surface optical reflectance (2D-SOR) to perform in situ electrochemical measurements of a Au(111) electrode in 0.1 M HClO4 electrolyte. We show that electrochemically induced changes to Au(111) surface during cyclic voltammetry can be simultaneously observed with 2D-SOR and HESXRD. We discuss how small one atom high 1x1 islands, accommodating excess atoms after the lifting of the surface reconstruction, can lead to discrepancies between the two techniques. The use of HESXRD allows us to simultaneously detect parts of the truncation rods from the (1 × 1) surface termination and the p x √3 electrochemically induced surface reconstruction, during cyclic voltammetry. The presence of reconstruction phenomena is shown to not depend on having an ideally prepared surface and can in fact be observed after going to very oxidizing potentials. 2D-SOR can also detect the oxidation of the Au surface, however no oxide peaks are detected in the HESXRD signal, which is evidence that any Au oxide is X-ray amorphous. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/d2106e1f-7326-4bda-a717-5ed52d9430d2
- author
- Linpé, Weronica
LU
; Rämisch, Lisa
LU
; Abbondanza, Giuseppe
LU
; Larsson, Alfred
LU
; Pfaff, Sebastian
LU
; Jacobse, Leon
; Zetterberg, Johan
LU
; Merte, Lindsay
LU
; Stierle, Andreas
and Hegedues, Zoltan
, et al. (More)
- Linpé, Weronica
LU
; Rämisch, Lisa
LU
; Abbondanza, Giuseppe
LU
; Larsson, Alfred
LU
; Pfaff, Sebastian
LU
; Jacobse, Leon
; Zetterberg, Johan
LU
; Merte, Lindsay
LU
; Stierle, Andreas
; Hegedues, Zoltan
; Lienert, Ulrich
; Lundgren, Edvin
LU
and Harlow, Gary S
LU
(Less)
- organization
- publishing date
- 2021-09-23
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the Electrochemical Society
- volume
- 168
- issue
- 9
- article number
- 096511
- publisher
- Electrochemical Society
- external identifiers
-
- scopus:85116344713
- ISSN
- 0013-4651
- DOI
- 10.1149/1945-7111/ac2702
- project
- Combined techniques for studies of catalysis
- language
- English
- LU publication?
- yes
- id
- d2106e1f-7326-4bda-a717-5ed52d9430d2
- date added to LUP
- 2021-10-22 10:08:04
- date last changed
- 2023-11-23 10:26:36
@article{d2106e1f-7326-4bda-a717-5ed52d9430d2,
abstract = {{We have combined high-energy surface X-ray diffraction (HESXRD) with 2D surface optical reflectance (2D-SOR) to perform in situ electrochemical measurements of a Au(111) electrode in 0.1 M HClO4 electrolyte. We show that electrochemically induced changes to Au(111) surface during cyclic voltammetry can be simultaneously observed with 2D-SOR and HESXRD. We discuss how small one atom high 1x1 islands, accommodating excess atoms after the lifting of the surface reconstruction, can lead to discrepancies between the two techniques. The use of HESXRD allows us to simultaneously detect parts of the truncation rods from the (1 × 1) surface termination and the p x √3 electrochemically induced surface reconstruction, during cyclic voltammetry. The presence of reconstruction phenomena is shown to not depend on having an ideally prepared surface and can in fact be observed after going to very oxidizing potentials. 2D-SOR can also detect the oxidation of the Au surface, however no oxide peaks are detected in the HESXRD signal, which is evidence that any Au oxide is X-ray amorphous.}},
author = {{Linpé, Weronica and Rämisch, Lisa and Abbondanza, Giuseppe and Larsson, Alfred and Pfaff, Sebastian and Jacobse, Leon and Zetterberg, Johan and Merte, Lindsay and Stierle, Andreas and Hegedues, Zoltan and Lienert, Ulrich and Lundgren, Edvin and Harlow, Gary S}},
issn = {{0013-4651}},
language = {{eng}},
month = {{09}},
number = {{9}},
publisher = {{Electrochemical Society}},
series = {{Journal of the Electrochemical Society}},
title = {{Revisiting Optical Reflectance from Au(111) Electrode Surfaces with Combined High-Energy Surface X-ray Diffraction}},
url = {{http://dx.doi.org/10.1149/1945-7111/ac2702}},
doi = {{10.1149/1945-7111/ac2702}},
volume = {{168}},
year = {{2021}},
}