Platinum particles deposited on synthetic boron-doped diamond surfaces: application to methanol oxidation
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Title: | Platinum particles deposited on synthetic boron-doped diamond surfaces: application to methanol oxidation |
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Authors: | Montilla, Francisco | Morallon, Emilia | Duo, Ilaria | Comninellis, Christos | Vázquez Picó, José Luis |
Research Group/s: | Electrocatálisis y Electroquímica de Polímeros |
Center, Department or Service: | Universidad de Alicante. Departamento de Química Física | Swiss Federal Institute of Technology. Faculty of Basic Science |
Keywords: | Diamond electrodes | Electrocatalysis | Platinum catalyst | Electrodeposition | Methanol oxidation |
Knowledge Area: | Química Física | Ciencia de Materiales |
Date Created: | 2002 |
Issue Date: | 15-Nov-2003 |
Publisher: | Elsevier |
Citation: | MONTILLA JIMÉNEZ, Francisco, et al. "Platinum particles deposited on synthetic boron-doped diamond surfaces: application to methanol oxidation". Electrochimica Acta. Vol. 48, Issues 25-26 (15 Nov. 2003). ISSN 0013-4686, pp. 3891-3897 |
Abstract: | Two methods have been used for the deposition of Pt particles on synthetic boron-doped diamond (BDD) surfaces: chemical deposition and electrodeposition under potentiostatic conditions. However, electrodeposition leads much higher platinum dispersion than chemical deposition. The mechanism of nucleation and growing of the electrodeposited platinum was investigated by means of chronoamperometric studies in acid medium. The electrodeposition on diamond surfaces shows a mechanism of progressive nucleation as deduced from the chronoamperometric studies in acid medium. The stability of the deposited platinum is very low and the platinum particle are dissolved/detached by cycling. The modified BDD electrodes by deposition of platinum have been tested for the oxidation of methanol, showing that multi-step deposition results in higher values of surface and mass activities for methanol oxidation than one-step deposition process. |
Sponsor: | Ministerio de Ciencia y Tecnología (MAT2001-1007) |
URI: | http://hdl.handle.net/10045/2704 |
ISSN: | 0013-4686 |
DOI: | 10.1016/S0013-4686(03)00526-7 |
Language: | eng |
Type: | info:eu-repo/semantics/article |
Peer Review: | si |
Publisher version: | http://dx.doi.org/10.1016/S0013-4686(03)00526-7 |
Appears in Collections: | INV - GEPE - Artículos de Revistas |
Files in This Item:
File | Description | Size | Format | |
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Electrochimica Acta 48 (2003) 3891-3897.pdf | Versión final (acceso restringido) | 313,51 kB | Adobe PDF | Open Request a copy |
Article.pdf | Versión revisada (acceso libre) | 316,25 kB | Adobe PDF | Open Preview |
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