Mostrar el registro sencillo del ítem
dc.contributor.author
Mello, Gisele A. B.
dc.contributor.author
Fernández, Pablo Sebastián
dc.contributor.author
Martins, María Elisa
dc.contributor.author
Camara Da Silva, Giuseppe Abíola
dc.date.available
2018-11-16T20:00:36Z
dc.date.issued
2017-01
dc.identifier.citation
Mello, Gisele A. B.; Fernández, Pablo Sebastián; Martins, María Elisa; Camara Da Silva, Giuseppe Abíola; Glycerol Electrooxidation on Platinum-Tin Electrodeposited Films: Inducing Changes in Surface Composition by Cyclic Voltammetry; Springer New York LLC; Electrocatalysis; 8; 1; 1-2017; 1-10
dc.identifier.issn
1868-5994
dc.identifier.uri
http://hdl.handle.net/11336/64656
dc.description.abstract
In this work, PtSn binary electrodeposits were prepared in three compositions and submitted to successive voltammetric cycles in presence of glycerol (1.0 mol L−1) in acidic media. Catalysts were characterized by energy dispersive X-ray analysis and X-ray photoelectron spectroscopy before and after the cycles being performed, in order to check eventual changes in their compositions during the process. Spectroscopic results show that surface compositions are sensibly richer in Sn than their bulk counterparts. Overall, PtSn catalysts show a poor initial catalytic activity toward glycerol electrooxidation. However, as the cycles succeed, the voltammetric responses increasingly resemble that of Pt, while the oxidation currents increase. Results are rationalized in terms of a continuous enrichment of the surface by Pt at the expenses of a loss of Sn. Moreover, when the electrochemical surface area (ECSA) is estimated by stripping of CO, it becomes evident that electrooxidation currents remain growing, even when the ECSA is decreased, which makes the gain in catalytic activity particularly relevant. Ultimately, from a broader perspective, our results suggest that catalytic surfaces with tunable features (such as surface composition and catalytic response) can be obtained by the application of easily executable electrochemical protocols. [Figure not available: see fulltext.]
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer New York LLC
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Electrodeposits
dc.subject
Glycerol Electrooxidation
dc.subject
Platinum-Tin
dc.subject
Surface Composition Change
dc.subject
Tunable Composition
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Glycerol Electrooxidation on Platinum-Tin Electrodeposited Films: Inducing Changes in Surface Composition by Cyclic Voltammetry
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-22T22:30:49Z
dc.journal.volume
8
dc.journal.number
1
dc.journal.pagination
1-10
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Mello, Gisele A. B.. Universidade Federal de Mato Grosso Do Sul; Brasil
dc.description.fil
Fil: Fernández, Pablo Sebastián. Universidade Estadual de Campinas; Brasil
dc.description.fil
Fil: Martins, María Elisa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
dc.description.fil
Fil: Camara Da Silva, Giuseppe Abíola. Universidade Federal de Mato Grosso Do Sul; Brasil
dc.journal.title
Electrocatalysis
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s12678-016-0332-z
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1007/s12678-016-0332-z
Archivos asociados