dc.date.accessioned | 2022-02-16T18:42:10Z | |
dc.date.available | 2022-07-08T22:46:09Z | |
dc.date.created | 2022-01-26T15:39:44Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Huang, Haoliang T.C. Hayes, Edward Gianolio, Diego Cibin, Giannantonio Hage, Fredrik Sydow Ramasse, Quentin Russell, Andrea E. . Role of SnO2 in the Bifunctional Mechanism of CO Oxidation at Pt-SnO2 Electrocatalysts. ChemElectroChem. 2021, 8(13), 2572-2582 | |
dc.identifier.uri | http://hdl.handle.net/10852/91005 | |
dc.description.abstract | Pt-Sn bimetallic catalysts, especially Pt-Sn alloys, are considered highly CO-tolerant and are thus candidates for reformate derived hydrogen oxidation and for direct oxidation of fuel cell molecules. However, it remains unclear if this CO-tolerance originates from Sn in the Pt-Sn alloy or whether SnO2, present as a separate phase, also contributes. In this work, a carbon-supported Pt-SnO2 was carefully synthesized to avoid the formation of Pt-Sn alloy phases. The resulting structure was analysed by scanning transmission electron microscopy (STEM) and detailed X-ray absorption spectroscopy (XAS). CO oxidation voltammograms of the Pt-SnO2/C and other SnO2-modified Pt surfaces unambiguously suggest that a bifunctional mechanism is indeed operative at such Pt-SnO2 catalysts for stable CO oxidation at low overpotentials. The results from these studies suggest that the bifunctional mechanism can be attributed to the co-catalysis role of SnO2, in which the surface hydroxide of SnO2 (Sn-OH) reacts with CO adsorbed on Pt surface (Pt-COads) and regenerates via a SnII/SnIV reversible redox couple (−0.2–0.3 V vs. reversible hydrogen electrode). | |
dc.language | EN | |
dc.title | Role of SnO2 in the Bifunctional Mechanism of CO Oxidation at Pt-SnO2 Electrocatalysts | |
dc.type | Journal article | |
dc.creator.author | Huang, Haoliang | |
dc.creator.author | T.C. Hayes, Edward | |
dc.creator.author | Gianolio, Diego | |
dc.creator.author | Cibin, Giannantonio | |
dc.creator.author | Hage, Fredrik Sydow | |
dc.creator.author | Ramasse, Quentin | |
dc.creator.author | Russell, Andrea E. | |
cristin.unitcode | 185,15,17,20 | |
cristin.unitname | Senter for Materialvitenskap og Nanoteknologi fysikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1990649 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=ChemElectroChem&rft.volume=8&rft.spage=2572&rft.date=2021 | |
dc.identifier.jtitle | ChemElectroChem | |
dc.identifier.volume | 8 | |
dc.identifier.issue | 13 | |
dc.identifier.startpage | 2572 | |
dc.identifier.endpage | 2582 | |
dc.identifier.doi | https://doi.org/10.1002/celc.202100642 | |
dc.identifier.urn | URN:NBN:no-93618 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 2196-0216 | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/91005/1/Manuscript65155.pdf | |
dc.type.version | AcceptedVersion | |