Lignin-derived Pt supported carbon (submicron)fiber electrocatalysts for alcohol electro-oxidation

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dc.contributorElectrocatálisis y Electroquímica de Polímeroses_ES
dc.contributorMateriales Carbonosos y Medio Ambientees_ES
dc.contributor.authorGarcía-Mateos, Francisco J.-
dc.contributor.authorCordero-Lanzac, Tomás-
dc.contributor.authorBerenguer Betrián, Raúl-
dc.contributor.authorMorallon, Emilia-
dc.contributor.authorCazorla-Amorós, Diego-
dc.contributor.authorRodríguez-Mirasol, José-
dc.contributor.authorCordero, Tomás-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Físicaes_ES
dc.contributor.otherUniversidad de Alicante. Departamento de Química Inorgánicaes_ES
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Materialeses_ES
dc.identifier.citationApplied Catalysis B: Environmental. 2017, 211: 18-30. doi:10.1016/j.apcatb.2017.04.008es_ES
dc.identifier.issn0926-3373 (Print)-
dc.identifier.issn1873-3883 (Online)-
dc.description.abstractLignin fibers, with and without phosphorus, and loaded with platinum have been prepared in a single step by electrospinning of lignin/ethanol/phosphoric acid/platinum acetylacetonate precursor solutions. Thermochemical treatments have been carried out to obtain lignin-based carbon fiber electrocatalysts. The electrospun lignin fibers were thermostabilized in air and carbonized at 900 °C. The effect of phosphorus and platinum content on the porous texture, the surface chemistry and the oxidation/electro-oxidation resistance have been studied. Phosphorus-containing carbon fibers develop a higher surface area (c.a. 1200 m2 g−1), exhibit a lower Pt particle size (2.1 nm) and a better particle distribution than their counterpart without phosphorus (c.a. 750 m2 g−1 of surface area and 9.6 nm Pt particle size). It has been proved that phosphorus improves the oxidation and electro-oxidation resistance of the fibers, avoiding their oxidation during the preparation thermal stages and is responsible of the generation of a microporous material with an unusual wide operational potential window (1.9 V). An important Pt–P synergy has been observed in the oxygen transfer during the oxidation and electro-oxidation of the fibers. The obtained carbon fibers can act directly as electrodes without any binder or conductivity promoter. The fibers with platinum have shown outstanding catalyst performance in the electro-oxidation of methanol and ethanol.es_ES
dc.description.sponsorshipThis work was supported by the Spanish MINECO under CTQ2015-68654-R project.es_ES
dc.rights© 2017 Elsevier B.V.es_ES
dc.subjectBinderless carbon electrodees_ES
dc.subjectElectrospun lignin fiberes_ES
dc.subjectPhosphoric acides_ES
dc.subjectAlcohol electro-oxidationes_ES
dc.subject.otherQuímica Físicaes_ES
dc.subject.otherQuímica Inorgánicaes_ES
dc.titleLignin-derived Pt supported carbon (submicron)fiber electrocatalysts for alcohol electro-oxidationes_ES
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