X-ray diffraction studies of ordered chloride and bromide monolayers at the Au(111)-solution interface

Journal Article · Wed Feb 15 04:00:00 EST 1995 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.51.5510· OSTI ID:6608752

Magnussen, O M; Ocko, B M ^[1]; Adzic, R R; Wang, J X ^[2]

---

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

We present [ital in] [ital situ] surface x-ray scattering observations of ordered chloride and bromide monolayers on Au(111) electrodes in aqueous solutions as an example of [ital in] [ital situ] x-ray diffraction from adsorbates of the lighter elements ([ital Z][lt]50). At a critical surface density both halides form incommensurate, hexagonal-close-packed monolayers that compress uniformly with increasing potential. Our structural results provide quantitative data on the residual adsorbate charge, the two-dimensional melting, and the two-dimensional compressibilities of halide monolayers.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6608752
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 51:8; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ADSORPTION
BROMIDES
BROMINE COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COHERENT SCATTERING
COMPRESSIBILITY
DIFFRACTION
ELEMENTS
GOLD
HALIDES
HALOGEN COMPOUNDS
INTERFACES
MECHANICAL PROPERTIES
MELTING
METALS
PHASE TRANSFORMATIONS
SCATTERING
SORPTION
TRANSITION ELEMENTS
X-RAY DIFFRACTION