Palladium nanoparticles supported on phosphorus-doped carbon for ethanol electro-oxidation in alkaline media
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Palladium nanoparticles supported on carbonVulcan
XC72 (Pd/C) and on phosphorus-doped carbon (Pd/P-C) were
prepared by an alcohol reduction process. X-ray diffractograms
of Pd/C and Pd/P-C showed the typical face-centered cubic
(fcc) structure of Pd. The crystallite sizes of Pd fcc phase were
around 8 nm for both samples. X-ray photoelectron spectroscopy
revealed to Pd/C and Pd/P-C that Pd was found predominantly
in the metallic state and to Pd/P-C, the presence of P
increases the amount of oxygen on the electrocatalyst surface.
The activity and stability of the electrocatalyts for ethanol
electro-oxidation in alkalinemedium was investigated by cyclic
voltammetry and chronoamperometry experiments. The peak
current density on Pd/P-C was 50% higher than on Pd/C, while
the current density measured after 30 min at − 0.35 V vs. Hg/
HgO was 65% higher on Pd/P-C than on Pd/C. The enhancement
of the catalytic activity of Pd/P-C electrocatalyst might be
related to the presence of higher amounts of oxygen species on
the surface, which could contribute to the oxidation of intermediates
formed during ethanol electro-oxidation process.
Como referenciar
SILVA, JULIO C.M.; FREITAS, ISABEL C. de; NETO, ALMIR O.; SPINACE, ESTEVAM V.; RIBEIRO, VILMARIA A. Palladium nanoparticles supported on phosphorus-doped carbon for ethanol electro-oxidation in alkaline media. Ionics, v. 24, n. 4, p. 1111-1119, 2018. DOI: 10.1007/s11581-017-2257-9. Disponível em: http://repositorio.ipen.br/handle/123456789/28534. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.