Activity of Platinum−Gold Alloys for Glucose Electrooxidation in Biofuel Cells - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Physical Chemistry B Année : 2007

Activity of Platinum−Gold Alloys for Glucose Electrooxidation in Biofuel Cells

A. Habrioux
  • Fonction : Auteur
Eric Sibert
K. Servat
W. Vogel
  • Fonction : Auteur
Nicolas Alonso-Vante

Résumé

Carbon supported Pt−Au catalysts with different bimetallic compositions were prepared by water in oil (w/o) microemulsion. Carbon Vulcan XC-72 was added during the synthesis of particles in order to obtain their good dispersion and a mean particle size distribution of 5.02 ± 0.56 nm. Structural characterization was performed using XRD at wide angles (WAXS), which showed that Pt−Au particles exhibited alloy properties. Electrochemical characterization allowed to estimate the surface composition of Pt−Au alloys, which was close to that of the bulk material Pt20Au80. This catalyst composition displayed the best catalytic activity in steady-state conditions in comparison with Pt50Au50 or Pt and Au alone. Moreover, a Pt−Au/C catalyst with a metal loading of 40 wt % was immobilized onto a carbon porous tube as anode. A membrane-less biofuel cell was tested using laccase/ABTS biocathode in phosphate buffer (pH 5).

Domaines

Matériaux

Dates et versions

hal-00417392 , version 1 (15-09-2009)

Identifiants

Citer

A. Habrioux, Eric Sibert, K. Servat, W. Vogel, Kouakou Boniface Kokoh, et al.. Activity of Platinum−Gold Alloys for Glucose Electrooxidation in Biofuel Cells. Journal of Physical Chemistry B, 2007, 111 (34), pp. 10329-10333. ⟨10.1021/jp0720183⟩. ⟨hal-00417392⟩
25 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More