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Sequential Electrodeposition of Platinum-Ruthenium at Boron-Doped Diamond Electrodes for Methanol Oxidation
Joint Authors
Lorenzo-Medrano, Camille
Cabrera, Carlos R.
González-González, Ileana
Source
Advances in Physical Chemistry
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-11-29
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Sequential electrodeposition of Pt and Ru on boron-doped diamond (BDD) films, in 0.5 M H2SO4 by cyclic voltammetry, has been prepared.
The potential cycling, in the aqueous solutions of the respective metals, was between 0.00 and 1.00 V versus Ag/AgCl.
The catalyst composites, Pt and PtRu, deposited on BDD film substrates, were tested for methanol oxidation.
The modified diamond surfaces were also characterized by scanning electron microscopy-X-ray fluorescence-energy dispersive spectroscopy, X-ray photoelectron spectroscopy, and Auger electron spectroscopy.
The scanning Auger electron spectroscopy mapping showed the ruthenium signal only in areas where platinum was electrodeposited.
Ruthenium does not deposit on the oxidized diamond surface of the boron-doped diamond.
Particles with 5–10% of ruthenium with respect to platinum exhibited better performance for methanol oxidation in terms of methanol oxidation peak current and chronoamperometric current stability.
The electrogenerated •OH radicals on BDD may interact with Pt surface, participating in the methanol oxidation as shown in oxidation current and the shift in the peak position.
The conductive diamond surface is a good candidate as the support for the platinum electrocatalyst, because it ensures catalytic activity, which compares with the used carbon, and higher stability under severe anodic and cathodic conditions.
American Psychological Association (APA)
González-González, Ileana& Lorenzo-Medrano, Camille& Cabrera, Carlos R.. 2011. Sequential Electrodeposition of Platinum-Ruthenium at Boron-Doped Diamond Electrodes for Methanol Oxidation. Advances in Physical Chemistry،Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-489852
Modern Language Association (MLA)
González-González, Ileana…[et al.]. Sequential Electrodeposition of Platinum-Ruthenium at Boron-Doped Diamond Electrodes for Methanol Oxidation. Advances in Physical Chemistry No. 2011 (2011), pp.1-10.
https://search.emarefa.net/detail/BIM-489852
American Medical Association (AMA)
González-González, Ileana& Lorenzo-Medrano, Camille& Cabrera, Carlos R.. Sequential Electrodeposition of Platinum-Ruthenium at Boron-Doped Diamond Electrodes for Methanol Oxidation. Advances in Physical Chemistry. 2011. Vol. 2011, no. 2011, pp.1-10.
https://search.emarefa.net/detail/BIM-489852
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-489852