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Titolo:
In-situ and real time structural studies of underpotential deposition of silver on a gold (111) electrode using a transmission X-ray surface differential diffraction technique
Autore:
Ndieyira, JW; Ramadan, AR; Rayment, T;
Indirizzi:
Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England Univ Cambridge Cambridge England CB2 1EW hem, Cambridge CB2 1EW, England
Titolo Testata:
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
fascicolo: 1-2, volume: 503, anno: 2001,
pagine: 28 - 35
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCANNING-TUNNELING-MICROSCOPY; AU(111) ELECTRODES; AG; ADLAYERS; ANIONS; ACID;
Keywords:
underpotential deposition; gold (111) electrode; surface differential diffraction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Rayment, T Univ Cambridge, Dept Chem, Lensfield Rd, Cambridge CB2 1EW, England Univ Cambridge Lensfield Rd Cambridge England CB2 1EW England
Citazione:
J.W. Ndieyira et al., "In-situ and real time structural studies of underpotential deposition of silver on a gold (111) electrode using a transmission X-ray surface differential diffraction technique", J ELEC CHEM, 503(1-2), 2001, pp. 28-35

Abstract

An in-situ surface X-ray differential diffraction (SDD) in transmission geometry has been applied for the first time to the study of silver adlayer structure on Au (111) in the underpotential region. Hitherto surface differential diffraction has been used to determine vertical positions of adsorbates from the substrate, but has given no information upon the lateral position of the adsorbate relative to the substrate. By conducting experiments using a ((1) over bar 11) reflecting plane, we show that it is possible to determine the adsorption site in three dimensions via SDD. The studies confirm that silver is adsorbed on multiple sites in a sulphate electrolyte whereas a single adsorption site was found for both acetate and fluoride electrolytes. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 18:18:54