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  Ex situ scanning tunneling microscopy study of under-potential oxidation of a Ag(111) electrode in an alkaline electrolyte

Shaikhutdinov, S. K., Savinova, E. R., Scheybal, A., Doblhofer, K., & Schlögl, R. (2001). Ex situ scanning tunneling microscopy study of under-potential oxidation of a Ag(111) electrode in an alkaline electrolyte. Journal of Electroanalytical Chemistry, 500(1-2), 208-212. doi:10.1016/S0022-0728(00)00346-6.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-18C3-C Versions-Permalink: https://hdl.handle.net/21.11116/0000-0006-C529-E
Genre: Zeitschriftenartikel

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 Urheber:
Shaikhutdinov, Shamil K.1, Autor           
Savinova, Elena R.2, Autor           
Scheybal, Andreas3, Autor           
Doblhofer, Karl2, Autor           
Schlögl, Robert3, Autor           
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              
2Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
3Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Schlagwörter: Silver; Oxygen adsorption; Anodic oxidation; Scanning tunnelling microscopy
 Zusammenfassung: A Ag(111) single crystal electrode emersed from NaF+NaOH electrolyte (pH 11) under potential control in the interval between -0.8 V and +0.2 V vs. Hg | HgO was studied by scanning tunneling microscopy (STM) in an inert atmosphere. The STM images show that the oxidation of the Ag(111) surface starts above the point of zero charge and exhibits a nucleation-growth mechanism. It starts at the steps and extends to the terraces as the electrode potential is scanned positive. Potential reversal restores the initial surface morphology. The reaction-induced features imaged in STM as dark spots are assigned as islands of chemisorbed oxygen-containing species. The irregular shape of the islands points to the diffusion of ad-species as the limiting step of the process.

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Sprache(n): eng - English
 Datum: 2000-08-112000-05-112000-08-222001-03-092001-03-16
 Publikationsstatus: Erschienen
 Seiten: 5
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 289283
DOI: 10.1016/S0022-0728(00)00346-6
 Art des Abschluß: -

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Titel: Journal of Electroanalytical Chemistry
  Andere : J. Electroanal. Chem.
  Andere : Journal of Electroanalytical Chemistry and Interfacial Electrochemistry
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Amsterdam : Elsevier
Seiten: 5 Band / Heft: 500 (1-2) Artikelnummer: - Start- / Endseite: 208 - 212 Identifikator: ISSN: 0022-0728
CoNE: https://pure.mpg.de/cone/journals/resource/954928572675