INVESTIGADORES
BARBERO Cesar Alfredo
artículos
Título:
Synthetic Porous Carbon as Support of Platinum Nanoparticles for Fuel Cell Electrodes
Autor/es:
MARIANO M. BRUNO; GABRIEL A. PLANES; MARIA C. MIRAS; CESAR A. BARBERO; ELENA PASTOR TEJERA; JOSE L. RODRÍGUEZ
Revista:
MOLECULAR CRYSTALS AND LIQUID CRYSTALS - (Print)
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: london; Año: 2010 vol. 521 p. 229 - 236
ISSN:
1542-1406
Resumen:
Porous vitreous carbon can be produced by pyrolysis of
resorcinol-formaldehyde porous resin. Using surfactants as stabilizers,
it is possible to dry the porous resin in air without pore collapse.
Having a large surface area (>500 m2/g) and high
electronic conductivity makes the materials suitable as support of
electrocatalyst nanoparticles. Pt nanoparticles were prepared by a
microemulsion method and impregnated into the carbon pores by adsorption
from its suspension. The presence of the Pt nanoparticles is easily
detected by the electrochemical reduction of proton and the evolution of
H2, detected by DEMS. The cyclic voltammogram of the
modified electrode in presence of CO does not show current due to CO
oxidation to CO2. On the other hand, the differential electrochemical mass spectroscopy (DEMS) signal clearly shows CO2 production. Methanol can be electroxidized on the electrode containing Pt nanoparticles supported on porous carbon.