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Titolo:
Structural trends among ionic mental-halide adlayers on electrode surfaces
Autore:
Wang, JX; Robinson, IK; DeVilbiss, JE; Adzic, RR;
Indirizzi:
Brookhaven Natl Lab, Div Mat & Chem Sci, Dept Appl Sci, Upton, NY 11973 USA Brookhaven Natl Lab Upton NY USA 11973 Dept Appl Sci, Upton, NY 11973 USA Univ Illinois, Dept Phys, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801 linois, Dept Phys, Urbana, IL 61801 USA
Titolo Testata:
JOURNAL OF PHYSICAL CHEMISTRY B
fascicolo: 33, volume: 104, anno: 2000,
pagine: 7951 - 7959
SICI:
1520-6106(20000824)104:33<7951:STAIMA>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
X-RAY-SCATTERING; SCANNING-TUNNELING-MICROSCOPY; CU UNDERPOTENTIAL DEPOSITION; SINGLE-CRYSTAL ELECTRODES; IN-SITU STM; AU(111) ELECTRODE; ATOMIC-STRUCTURE; TL-ADLAYERS; COPPER; PT(111);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Wang, JX Brookhaven Natl Lab, Div Mat & Chem Sci, Dept Appl Sci, Bldg 555,Upton, NY 11973 USA Brookhaven Natl Lab Bldg 555 Upton NY USA 11973 ton, NY 11973 USA
Citazione:
J.X. Wang et al., "Structural trends among ionic mental-halide adlayers on electrode surfaces", J PHYS CH B, 104(33), 2000, pp. 7951-7959

Abstract

X-ray diffraction techniques have been used to determine the structures ofTl-CI, Tl-I, and Pb-Br compounds adsorbed on Au(111) in acid solution. As in the previous case of Tl-Br, several well-defined mixed adlayer phases with stoichiometries of 1:1, 1:2, and 1:3 have been found over a wide potential region. Sufficient data have been gathered to explore the general structural trends among electrochemically prepared two-dimensional (2D) binary ionic compounds. The observed structural phase behavior is rationalized by symmetry and electrostatic considerations in 2D binary ionic crystals. For the 1:1 stoichiometry, square symmetry is generally preferred because it allows an ion to surround itself with the maximum number of counterions. On a hexagonal substrate, this becomes distorted to either a rectangle or a rhombus in commensurate or uniaxially commensurate phases, depending on whether the cation and anion layers are in the same plane.

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Documento generato il 03/04/20 alle ore 18:14:05