Montilla, Francisco, Morallon, Emilia, Duo, Ilaria, Comninellis, Christos, Vázquez Picó, José Luis
Platinum particles deposited on synthetic boron-doped diamond surfaces: application to methanol oxidation
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
URI: http://hdl.handle.net/10045/2704
DOI: 10.1016/S0013-4686(03)00526-7
ISSN: 0013-4686
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.
Keywords:Diamond electrodes, Electrocatalysis, Platinum catalyst, Electrodeposition, Methanol oxidation
Elsevier
info:eu-repo/semantics/article