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dc.contributor.author
del Barrio, Maria Cecilia  
dc.contributor.author
Garcia, Silvana Graciela  
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Mayer, Carlos Enrique  
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Salinas, Daniel Ricardo  
dc.date.available
2019-05-15T22:26:45Z  
dc.date.issued
2008-01-11  
dc.identifier.citation
del Barrio, Maria Cecilia; Garcia, Silvana Graciela; Mayer, Carlos Enrique; Salinas, Daniel Ricardo; New insights on the Cd UPD on Au(111); John Wiley & Sons Ltd; Surface and Interface Analysis; 40; 1; 11-1-2008; 22-26  
dc.identifier.issn
0142-2421  
dc.identifier.uri
http://hdl.handle.net/11336/76520  
dc.description.abstract
The Cd underpotential deposition (UPD) process on Au(111) was analyzed by means of combined electrochemical measurements and in situ scanning tunneling microscopy (STM). In the underpotential range 300 ≤ ΔE (mV) ≤400, 2D Cd islands are formed on the fcc regions of the Au(111)-(√3 × 22) reconstructed surface without lifting the reconstruction. At lower underpotentials, the 2D Cd islands grow and, simultaneously, new 2D islands nucleate and coalesce with the previous ones forming a complete condensed Cd monolayer (ML). STM images and long time polarization experiments performed at ΔE = 70 mV demonstrate the formation of an Au-Cd surface alloy. At ΔE = 10 mV, the formation of the complete Cd ML is accompanied by a significant Au-Cd surface alloying and the kinetic results reveal two different solid-state diffusion processes. The first one, with a diffusion coefficient D1 = 4 × 10-17 cm2 s -1, could be ascribed to the mutual diffusion of Au and Cd atoms through a highly distorted (vacancy-rich) Au-Cd alloy layer. The second and faster diffusion process (D2 = 7 × 10-16 cm2 s -1) is associated with the appearance of an additional peak in the anodic stripping curves and could be attributed to the formation of another CdzAux alloy phase.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
John Wiley & Sons Ltd  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Alloy Formation  
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Au(111)  
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Cd Upd  
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In Situ Stm  
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Otras Ingeniería Química  
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Ingeniería Química  
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INGENIERÍAS Y TECNOLOGÍAS  
dc.title
New insights on the Cd UPD on Au(111)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2019-05-06T16:15:04Z  
dc.identifier.eissn
1096-9918  
dc.journal.volume
40  
dc.journal.number
1  
dc.journal.pagination
22-26  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: del Barrio, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina  
dc.description.fil
Fil: Garcia, Silvana Graciela. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina  
dc.description.fil
Fil: Mayer, Carlos Enrique. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina  
dc.description.fil
Fil: Salinas, Daniel Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca; Argentina. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina  
dc.journal.title
Surface and Interface Analysis  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1002/sia.2664  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/sia.2664