INVESTIGADORES
MORENO Mario Sergio Jesus
artículos
Título:
Carbon nanotubes as catalyst supports for ethanol oxidation
Autor/es:
J.E. THOMAS; A.R. BONESI; M.S. MORENO; A. VISINTIN; A.M. CASTRO LUNA; W.E. TRIACA
Revista:
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2010 vol. 35 p. 11681 - 11686
ISSN:
0360-3199
Resumen:
Multiwalled carbon nanotubes were obtained by chemical vapor deposition of xyleneeferroceneand employed as supports for PtSn alloy nanoparticles synthesized by thepolyol method. The same metal alloy catalyst was also supported on Vulcan XC-72R tocompare the influence of the substrate on the catalyst behavior for ethanol oxidation.The physical characterization of the carbon samples and supported alloy catalysts wasperformed by scanning electron microscopy, transmission electron microscopy, X-raydiffraction, and X-ray photoelectron spectroscopy.Ethanol oxidation was chosen as a reaction model to study the electrocatalytic behavior ofthe supported PtSn nanoparticles. Cyclic voltammetry, chronoamperometry and electrochemicalimpedance spectroscopy were used for the electrochemical characterization. ThePtSn/MWNT electrodes show a better catalytic behavior for ethanol oxidation than PtSn/Vulcan XC-72R electrodes.
