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Titolo:
The effect of different concentrations of chloride on the structure of CuUPD on Pt(111)
Autore:
Zei, MS; Wu, K; Eiswirth, M; Ertl, G;
Indirizzi:
Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany Max Planck Gesell Berlin Germany D-14195 r Inst, D-14195 Berlin, Germany
Titolo Testata:
ELECTROCHIMICA ACTA
fascicolo: 4-5, volume: 45, anno: 1999,
pagine: 809 - 817
SICI:
0013-4686(1999)45:4-5<809:TEODCO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCANNING-TUNNELING-MICROSCOPY; UNDERPOTENTIAL DEPOSITION UPD; X-RAY-SCATTERING; AU(111) ELECTRODE; SULFURIC-ACID; COPPER; CU; SURFACES; PT(100); ADSORPTION;
Keywords:
concentration of chloride; UPD; Pt(111); deposition;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Zei, MS Max Planck Gesell, Fritz Haber Inst, Faradayweg 4-6, D-14195 Berlin, Germany Max Planck Gesell Faradayweg 4-6 Berlin Germany D-14195 , Germany
Citazione:
M.S. Zei et al., "The effect of different concentrations of chloride on the structure of CuUPD on Pt(111)", ELECTR ACT, 45(4-5), 1999, pp. 809-817

Abstract

The influence of the concentration of chloride ions on the underpotential deposition of copper onto Pt(111) has been studied by AES, LEED and RHEED. The results demonstrate that the arrangements of the superlattices of (2 x root 3), '(4 x 4)', c(11 x root 3) and ((8)(1)(1)(2)), real space structures of the corresponding LEED/RHEED patterns are), and their packing density on the copper covered Pt(111) are clearly determined by the Cl- concentration. derived from a comparison of the LEED spot intensities with those obtained by kinematic calculations. Thus the superstructures are interpreted as ordered Cl adlayers on top of a pseudomorphic-grown Cu UPD layer. A compressed copper UPD adlayer with a Cu-Cu distance of 0.259 nm determined by EXAFS could not be observed by RHEED. (C) 1999 Elsevier Science Ltd. All rightsreserved.

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Documento generato il 10/04/20 alle ore 02:33:48