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dc.contributor.author
Duarte, M.M.E.  
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Pilla, A.S.  
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Sieben, Juan Manuel  
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Mayer, Carlos Enrique  
dc.date.available
2020-02-17T20:17:34Z  
dc.date.issued
2006-01  
dc.identifier.citation
Duarte, M.M.E.; Pilla, A.S.; Sieben, Juan Manuel; Mayer, Carlos Enrique; Platinum particles electrodeposition on carbon substrates; Elsevier Science Inc; Electrochemistry Communications; 8; 1; 1-2006; 159-164  
dc.identifier.issn
1388-2481  
dc.identifier.uri
http://hdl.handle.net/11336/97811  
dc.description.abstract
Electrochemical deposition of platinum on different carbon substrates was applied to obtain supported submicroparticles to use as electrocatalysts for the oxidation of methanol in acid media. Particles with well-defined morphology and size can be obtained by this technique controlling electrodeposition potential and time. Glassy carbon and graphite fibers were used as substrates. Platinum particles were deposited from chloroplatinic acid solutions. Conventional electrochemical techniques were used to characterize supported platinum surface status. Particle size and catalyst mass were influenced by deposition potential and time. The application of double potential steps favored a more uniform dispersion of the particles and a general reduction in particle size. From specific surface area measurements particle diameters between 10 and 20 nm were estimated when glassy carbon was used as support. Differences in size and morphology were observed when Pt was deposited on graphite fibers. Notwithstanding using similar conditions, the particles on fibers were bigger and tending to coalesce. This behavior was ascribed to the highly hydrophobic surface of the fibers. The Pt deposits were tested as catalyst for electrochemical methanol oxidation. The Pt/GC electrocatalytic activity expressed as current per Pt mass was found to depend on the metal particle size, showing a decreasing activity when the catalyst diameter increase.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science Inc  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/  
dc.subject
ELECTRODEPOSITION  
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GLASSY CARBON  
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GRAPHITE FIBER  
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METHANOL  
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PLATINUM  
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Físico-Química, Ciencia de los Polímeros, Electroquímica  
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Ciencias Químicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Platinum particles electrodeposition on carbon substrates  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2020-02-13T14:10:04Z  
dc.journal.volume
8  
dc.journal.number
1  
dc.journal.pagination
159-164  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Duarte, M.M.E.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina  
dc.description.fil
Fil: Pilla, A.S.. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina  
dc.description.fil
Fil: Sieben, Juan Manuel. 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: Mayer, Carlos Enrique. Universidad Nacional del Sur. Departamento de Ingeniería Química. Instituto de Ingeniería Electroquímica y Corrosión; Argentina  
dc.journal.title
Electrochemistry Communications  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1388248105003516  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.elecom.2005.11.003