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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evidence for Independent Glycerol Electrooxidation Behavior on Different Ordered Domains of Polycrystalline Platinum

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Author(s):
Fernandez, Pablo S. [1, 2] ; Martins, Caue A. [3] ; Angelucci, Camilo A. [4] ; Gomes, Janaina F. [5] ; Camara, Giuseppe A. [6] ; Martins, Maria E. [7] ; Tremiliosi-Filho, Germano [2]
Total Authors: 7
Affiliation:
[1] Univ Estadual Campinas, Inst Quim, Sao Paulo - Brazil
[2] Univ Sao Paulo, Inst Quim Sao Carlos, Sao Paulo - Brazil
[3] Fundacao Univ Fed Grande Dourados, Fac Cs Exatas & Tecnol, Dourados, MS - Brazil
[4] Univ Fed ABC, Ctr Ciencias Nat & Humanas, Sao Paulo - Brazil
[5] Univ Fed Sao Carlos Santo Sao Carlos, Dept Engn Quim, Sao Paulo - Brazil
[6] Univ Fed Mato Grosso do Sul, Inst Quim, Campo Grande, MS - Brazil
[7] Univ Nacl La Plata, INIFTA CONICET, RA-1900 La Plata, Buenos Aires - Argentina
Total Affiliations: 7
Document type: Journal article
Source: CHEMELECTROCHEM; v. 2, n. 2, p. 263-268, FEB 11 2015.
Web of Science Citations: 19
Abstract

We investigate the electrooxidation of glycerol (GlOH) on polycrystalline Pt. The results obtained in the presence of GlOH were compared with those of fresh and disturbed low-index Pt single crystals {[}(111), (100) and (110)]. Monitoring of the oxidation currents of GlOH by cyclic voltammetry on the different surfaces revealed that the electrooxidation of GlOH is highly sensitive to the order of the polycrystalline Pt atoms. Interestingly, after being disturbed by the application of voltammetric cycles, the combined responses of the disordered single crystals become similar to that of polycrystalline Pt. The changes in the current values associated with the specific potentials at which each oxidation peak takes place suggest that different ordered domains of Pt oxidize GlOH independently. This simple approach can clearly assist in our understanding of the effect of the order of surface atoms in a given reaction, not only in electrochemical reactions. (AU)

FAPESP's process: 13/13749-0 - Glycerol electrochemical conversion to more valuable compounds: Mechanistics and kinetics studies
Grantee:Janaina de Souza Garcia
Support Opportunities: Regular Research Grants
FAPESP's process: 14/01362-6 - Investigation of the electro-oxidation mechanism of renewable fuels on Pt and Pd single crystals and nanomaterials
Grantee:Pablo Sebastián Fernández
Support Opportunities: Scholarships in Brazil - Post-Doctoral