Journal
MATERIALS
Volume 5, Issue 9, Pages 1686-1697Publisher
MDPI
DOI: 10.3390/ma5091686
Keywords
Pd nanoparticles; Pd nanobars; Pd nanorods; ethanol electro-oxidation
Categories
Funding
- Mexican Council for Science and Technology CONACYT through SEP-CONACYT [154263]
- Mexican Council for Science and Technology CONACYT through ANR-CONACYT [163114]
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In the present study, three different structures with preferentially exposed crystal faces were supported on commercial carbon black by the polyol method (nanoparticles (NP/C), nanobars (NB/C) and nanorods (NR/C)). The electrocatalysts were characterized by XRD, TEM, TGA and cyclic voltammetry at three different ethanol concentrations. Considerable differences were found in terms of catalytic electroactivity. At all ethanol concentrations, the trend observed for the ethanol oxidation peak potential was preserved as follows: NB/C < NP/C < NR/C < commercial Pd/C. This result indicates that, from a thermodynamics point of view, the NB/C catalyst enclosed by Pd(100) facets presented the highest activity with respect to ethanol electro-oxidation among all of the catalysts studied.
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