Platinum-catalyzed Nb-doped TiO2 and Nb-doped TiO2 nanotubes for hydrogen generation in proton exchange membrane water electrolyzers

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dc.contributor.authorAlcaide Monterrubio, Francisco
dc.contributor.authorGenova-Koleva, Radostina Vasileva
dc.contributor.authorÁlvarez, Garbiñe
dc.contributor.authorGrande, Hans-Jürgen
dc.contributor.authorMiguel, Óscar
dc.contributor.authorCabot Julià, Pere-Lluís
dc.date.accessioned2020-09-02T10:30:20Z
dc.date.available2022-01-30T06:10:18Z
dc.date.issued2020-01-30
dc.date.updated2020-09-02T10:30:20Z
dc.description.abstractThis paper studies the catalytic activity of Pt deposited onto Nb-doped titania supports toward the hydrogen evolution reaction (HER). New catalysts based on Nb-doped TiO2 nanoparticles (nNb-TiO2) and Nb-doped TiO2 nanotubes (nNb-TNTs), with n in the range 3-10 at % (Nb+Ti), were synthesized. The specific surface areas of nNb-TNTs were 250−300 m2g-1, about three times higher than those of nNb-TiO2. X-ray diffraction showed the Nb incorporation into the TiO2 lattice with its consequent lattice expansion. The X-ray photoelectron spectra of Pt deposited onto Nb-doped titania revealed a negative charge accumulation on Pt, thus denoting strong metal-support interaction. The electrochemical characterization in acidic media showed that Pt supported on nNb-TiO2 and nNb-TNTs presented better activity towards the HER than that of Pt deposited onto the un-doped supports and commercial Pt on carbon. The best performance was obtained with a small Nb doping of 3 at %.
dc.format.extent15 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec695538
dc.identifier.issn0360-3199
dc.identifier.urihttps://hdl.handle.net/2445/170100
dc.language.isoeng
dc.publisherElsevier Ltd
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/j.ijhydene.2020.01.057
dc.relation.ispartofInternational Journal of Hydrogen Energy, 2020, vol. 45, num. 40, p. 20605-20619
dc.relation.urihttps://doi.org/10.1016/j.ijhydene.2020.01.057
dc.rightscc-by-nc-nd (c) Elsevier Ltd, 2020
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es
dc.sourceArticles publicats en revistes (Ciència dels Materials i Química Física)
dc.subject.classificationHidrogen
dc.subject.classificationNanotubs
dc.subject.otherHydrogen
dc.subject.otherNanotubes
dc.titlePlatinum-catalyzed Nb-doped TiO2 and Nb-doped TiO2 nanotubes for hydrogen generation in proton exchange membrane water electrolyzers
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/acceptedVersion

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