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Titolo:
IN-SITU AND REAL-TIME X-RAY-DIFFRACTION STUDY OF INTERDIFFUSION AT THE AG AU(111) INTERFACE AFTER ELECTROLYTIC DEPOSITION/
Autore:
CHABALA ED; RAYMENT T;
Indirizzi:
UNIV CAMBRIDGE,CHEM LAB,DEPT CHEM,LENSFIELD RD CAMBRIDGE CB2 1EW ENGLAND
Titolo Testata:
Journal of the Chemical Society. Faraday transactions
fascicolo: 22, volume: 92, anno: 1996,
pagine: 4657 - 4660
SICI:
0956-5000(1996)92:22<4657:IARXSO>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNDERPOTENTIAL DEPOSITION; SURFACE; GROWTH; AU; MICROSCOPY; AG(110); SYSTEM; FILMS; GOLD;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
18
Recensione:
Indirizzi per estratti:
Citazione:
E.D. Chabala e T. Rayment, "IN-SITU AND REAL-TIME X-RAY-DIFFRACTION STUDY OF INTERDIFFUSION AT THE AG AU(111) INTERFACE AFTER ELECTROLYTIC DEPOSITION/", Journal of the Chemical Society. Faraday transactions, 92(22), 1996, pp. 4657-4660

Abstract

We have previously used laboratory based X-ray diffraction to observethat underpotentially deposited Ag on Au(111) formed a structure witha spacing (normal to the surface plane at the interface) that was outof phase with the Au(111) atomic planes. We have also recently used the same technique to observe the expected diffusion controlled epitaxial growth of Ag on Au(111) during electrolytic bulk deposition. Both measurements were made at the electrode/electrolyte interface in situ and in real time. However, in the work reported here, we have observed the existence of a structure at the Ag/Au(111) interface that diffracted X-rays out-of-phase with the Au(111) planes after bulk electrolyticdeposition of Ag. We attribute this phenomenon to interdiffusion between the Ag and the Au(111) lattice at the interface. Furthermore, we have observed that the structure diffracting X-rays out-of-phase switched to one diffracting in-phase after a period of time. This implies that we were able to monitor the process of interdiffusion between Ag and Au both in situ and in real time.

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Documento generato il 01/12/20 alle ore 16:40:49