INVESTIGADORES
MORENO Mario Sergio Jesus
artículos
Título:
Catalytic enhancement of formic acid electro-oxidation through surface modifications with gold on supported Pt nanoparticles
Autor/es:
CAPPELLARI, PAULA S.; BAENA-MONCADA, ANGÉLICA M.; CONEO-RODRÍGUEZ, RUSBEL; MORENO, M. SERGIO; BARBERO, CESAR A.; PLANES, GABRIEL A.
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2019 vol. 44 p. 1967 - 1972
ISSN:
0360-3199
Resumen:
The Formic Acid Electro-oxidation (FAEO) on Pt/Au Nanoparticles (PtAu NP) supported on Hierarchical Porous Carbon (HPC), was studied by cyclic voltammetry and chronoamperometry. The supported HPC-Pt nanoparticles were surface modified by Au spontaneous deposits. The morphological and compositional characterization was performed by Scanning Electron Microscopy (SEM) coupled with Electron Dispersive Spectroscopy (EDS). A significant increase of the current densities for FAEO in the potential region 0.1?0.75 V RHE was observed on HPC-PtAu catalysts. The comparison with HPC-Pt electrodes results show that Au atoms presence on Pt nanoparticles is a key factor to improve the catalysts performance. Based on our results, a clear change in FAEO mechanism on HPC-PtAu catalysts with respect to HPC-Pt was evidenced.
