English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/11371
Compartir / Impacto:
Add this article to your Mendeley library MendeleyBASE
Citado 48 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL

Saccharide-based graphitic carbon nanocoils as supports for PtRu nanoparticles for methanol electrooxidation

AutorSevilla Solís, Marta ; Lota, Grzegorz; Fuertes Arias, Antonio Benito
Palabras claveCarbon nanocoils
Graphitic carbon
Methanol oxidation
Direct methanol fuel cells
Fecha de publicación6-jun-2007
CitaciónJournal of Power Sources 171(2): 546-551 (2007)
ResumenHighly graphitic carbon nanocoils were synthesised from the catalytic graphitization of carbon spherules obtained by the hydrothemal treatment of different saccharides (sucrose, glucose and starch). This nanostructured carbon was characterized by X-ray power diffraction, N2 adsorption and microscopy techniques (SEM and TEM). The carbon nanocoils were used as a support for PtRu nanoparticles, which were well-dispersed over the carbon surface. This catalytic system was investigated for use as an electrocatalyst for methanol electrooxidation in an acid medium. The experiments were carried out at two working temperatures (25°C and 60°C). It was found that the carbon nanocoils supporting PtRu nanoparticles exhibit a high catalytic activity, which is even higher than that of conventional carbon supports (Vulcan XC-72R). We believe that the high electrocatalytic activity of the carbon nanocoils presented here is due to the combination of a good electrical conductivity, derived from their graphitic structure, and a wide porosity that allows the diffusional resistances of reactants/products to be minimized.
Descripción6 pages, 4 figures.-- Printed version published Sep 27, 2007.
Versión del editorhttp://dx.doi.org/10.1016/j.jpowsour.2007.05.096
Aparece en las colecciones: (INCAR) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.