PtRu nanoparticles supported on phosphorous-doped carbon as electrocatalysts for methanol electro-oxidation
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Electrocatalysis
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P-doped carbonwas prepared by thermal treatment of
commercial carbon Vulcan XC72 with H3PO4 at 800 °C. PtRu
nanoparticles were supported on carbon Vulcan XC72 (C) and
on P-doped carbon (P-C) using an alcohol reduction process.
The obtained materials were characterized by energy-dispersive
X-ray spectroscopy, Raman spectroscopy, X-ray diffraction,
transmission electron microscopy, and cyclic voltammetry. The
performance of the electrocatalyst was evaluated for methanol
electro-oxidation. The intensities of D-band and G-band of
Raman spectra were different for P-doped carbon and carbon
Vulcan XC72. X-ray diffraction of PtRu/C electrocatalyst
showed that Pt face-centered cubic phase and Ru amorphous
phase coexist in thismaterial, while for PtRu/P-C electrocatalyst,
it was observed the presence of PtRu alloy and Ru hexagonal
close-packed phases. The use of P-doped carbon as support for
PtRu nanoparticles improves the methanol electro-oxidation.
This increase of activity could be attributed to a decrease of
average nanoparticle sizes and/or more active Pt and Ru species
resulting from metal-support interactions.
Como referenciar
PEREIRA, VIVIANE S.; SILVA, JULIO C.M. da; OLIVEIRA NETO, ALMIR; SPINACE, ESTEVAM V. PtRu nanoparticles supported on phosphorous-doped carbon as electrocatalysts for methanol electro-oxidation. Electrocatalysis, v. 8, n. 3, p. 245-251, 2017. DOI: 10.1007/s12678-017-0360-3. Disponível em: http://repositorio.ipen.br/handle/123456789/27796. 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.