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Dynamics of lifting the Au(111) reconstruction in perchloric acid electrolyte

Harlow, Gary S. LU ; Linpé, Weronica LU ; Pfaff, Sebastian LU ; Yang, Ziyan ; Jacobse, Leon ; Vonk, Vedran ; Abbondanza, Giuseppe LU ; Peña-Díaz, Marina ; Barja, S. and Dippel, Ann Christin , et al. (2025) In Physical Chemistry Chemical Physics 27(46). p.25179-25186
Abstract

The striped p × √3 reconstruction of Au(111) is a textbook example of how electrode surfaces reorganise in response to an applied potential. Using in situ high-energy surface X-ray diffraction, we track the surface reconstruction in 0.1 M HClO4electrolyte while the potential is cycled at both 5 mV s−1and 2 mV s−1between 0.06 V and 0.86 V versus RHE. Reciprocal-space maps, collected every ∼10 s, show that the unit cell of the well-known herringbone reconstruction increases in length progressively as the potential is swept positively; the diffraction spots coalesce with the spot from the (111) surface and the reconstruction lifts completely above ≈0.7 V. The lifting and reformation dynamics of the surface... (More)

The striped p × √3 reconstruction of Au(111) is a textbook example of how electrode surfaces reorganise in response to an applied potential. Using in situ high-energy surface X-ray diffraction, we track the surface reconstruction in 0.1 M HClO4electrolyte while the potential is cycled at both 5 mV s−1and 2 mV s−1between 0.06 V and 0.86 V versus RHE. Reciprocal-space maps, collected every ∼10 s, show that the unit cell of the well-known herringbone reconstruction increases in length progressively as the potential is swept positively; the diffraction spots coalesce with the spot from the (111) surface and the reconstruction lifts completely above ≈0.7 V. The lifting and reformation dynamics of the surface reconstruction are seen to be relatively slow and continuous, when the potential is swept at 5 mV s−1we observe the reconstruction lifting at more positive potentials than when swept at 2 mV s−1. Conversely the reforming of the reconstruction is also slow and is present at more positive potentials when the sweep rate is slower.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Chemistry Chemical Physics
volume
27
issue
46
pages
8 pages
publisher
Royal Society of Chemistry
external identifiers
  • pmid:41236359
  • scopus:105023109709
ISSN
1463-9076
DOI
10.1039/d5cp03380b
language
English
LU publication?
yes
id
dbda7546-bced-464b-ae72-23a40de7fcaa
date added to LUP
2026-01-30 15:48:22
date last changed
2026-02-13 17:13:32
@article{dbda7546-bced-464b-ae72-23a40de7fcaa,
  abstract     = {{<p>The striped p × √3 reconstruction of Au(111) is a textbook example of how electrode surfaces reorganise in response to an applied potential. Using in situ high-energy surface X-ray diffraction, we track the surface reconstruction in 0.1 M HClO<sub>4</sub>electrolyte while the potential is cycled at both 5 mV s<sup>−1</sup>and 2 mV s<sup>−1</sup>between 0.06 V and 0.86 V versus RHE. Reciprocal-space maps, collected every ∼10 s, show that the unit cell of the well-known herringbone reconstruction increases in length progressively as the potential is swept positively; the diffraction spots coalesce with the spot from the (111) surface and the reconstruction lifts completely above ≈0.7 V. The lifting and reformation dynamics of the surface reconstruction are seen to be relatively slow and continuous, when the potential is swept at 5 mV s<sup>−1</sup>we observe the reconstruction lifting at more positive potentials than when swept at 2 mV s<sup>−1</sup>. Conversely the reforming of the reconstruction is also slow and is present at more positive potentials when the sweep rate is slower.</p>}},
  author       = {{Harlow, Gary S. and Linpé, Weronica and Pfaff, Sebastian and Yang, Ziyan and Jacobse, Leon and Vonk, Vedran and Abbondanza, Giuseppe and Peña-Díaz, Marina and Barja, S. and Dippel, Ann Christin and Gutowski, Olof and Larsson, Alfred and Rämisch, Lisa and Zetterberg, Johan and Merte, Lindsay R. and Stierle, Andreas and Lundgren, Edvin}},
  issn         = {{1463-9076}},
  language     = {{eng}},
  number       = {{46}},
  pages        = {{25179--25186}},
  publisher    = {{Royal Society of Chemistry}},
  series       = {{Physical Chemistry Chemical Physics}},
  title        = {{Dynamics of lifting the Au(111) reconstruction in perchloric acid electrolyte}},
  url          = {{http://dx.doi.org/10.1039/d5cp03380b}},
  doi          = {{10.1039/d5cp03380b}},
  volume       = {{27}},
  year         = {{2025}},
}