Surface x-ray diffraction study of the Au(111) electrode in 0. 01 M NaCl: Electrochemically induced surface reconstruction

Journal Article · Tue Sep 01 04:00:00 EDT 1992 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States)

DOI:https://doi.org/10.1116/1.577859· OSTI ID:7030770

Ocko, B M; Gibaud, A; Wang, J ^[1]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)

The structure of the Au(111) electrode surface in a 0.01 M NaCl electrolyte has been investigated using grazing incident angle x-ray diffraction. The top layer of gold atoms undergoes a reversible phase transition between the (1{times}1) bulk termination and a ({ital p}{times}{radical}3) uniaxial discommensuration (striped) phase on changing the electrode potential. Below a critical potential the stripe separation, {ital p}=23, is identical to vacuum measurements. At sufficiently positive potentials the surface forms an ideally terminated, (1{times}1), Au(111) surface. Cycling the potential in the reconstructed region improves the reconstructed surface order.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7030770
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States) Vol. 10:5; ISSN JVTAD; ISSN 0734-2101
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400 -- Electrochemistry
ALKALI METAL COMPOUNDS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
DIFFRACTION
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
ELEMENTS
GOLD
HALIDES
HALOGEN COMPOUNDS
METALS
PHASE TRANSFORMATIONS
SCATTERING
SODIUM CHLORIDES
SODIUM COMPOUNDS
SURFACE PROPERTIES
TRANSITION ELEMENTS
X-RAY DIFFRACTION