Dynamics of lifting the Au(111) reconstruction in perchloric acid electrolyte
Artikel i vetenskaplig tidskrift, 2025
The striped p x root 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 HClO4 electrolyte while the potential is cycled at both 5 mV s-1 and 2 mV s-1 between 0.06 V and 0.86 V versus RHE. Reciprocal-space maps, collected every similar to 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 approximate to 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-1 we 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.
Författare
Gary S. Harlow
Lunds universitet
University of Oregon
Universidad del Pais Vasco / Euskal Herriko Unibertsitatea
Weronica Linpe
Lunds universitet
Sebastian Pfaff
Lunds universitet
Ziyan Yang
University of Oregon
Universidad del Pais Vasco / Euskal Herriko Unibertsitatea
Leon Jacobse
Max-Planck-Gesellschaft
Deutsches Elektronen-Synchrotron (DESY)
Vedran Vonk
Deutsches Elektronen-Synchrotron (DESY)
Giuseppe Abbondanza
Chalmers, Fysik, Kemisk fysik
Marina Pena-Diaz
University of Oregon
Universidad del Pais Vasco / Euskal Herriko Unibertsitatea
Basque Research and Technology Alliance (BRTA)
S. Barja
Universidad del Pais Vasco / Euskal Herriko Unibertsitatea
University of Oregon
Ann-Christin Dippel
Deutsches Elektronen-Synchrotron (DESY)
Olof Gutowski
Deutsches Elektronen-Synchrotron (DESY)
Alfred Larsson
Lunds universitet
Lisa Ramisch
Lunds universitet
Johan Zetterberg
Lunds universitet
Lindsay R. Merte
Malmö universitet
Andreas Stierle
Deutsches Elektronen-Synchrotron (DESY)
Edvin Lundgren
Lunds universitet
Physical Chemistry Chemical Physics
1463-9076 (ISSN) 1463-9084 (eISSN)
Vol. 27 25179-25186 25179In situ högenergetisk röntgendiffraktion från elektrokemiska material
Vetenskapsrådet (VR) (2015-06092), 2016-01-01 -- 2019-12-31.
Ämneskategorier (SSIF 2025)
Oorganisk kemi
DOI
10.1039/d5cp03380b
PubMed
41236359