DC Field | Value | Language |
---|---|---|
dc.contributor.author | Youngmin Kim | - |
dc.contributor.author | Yuseong Noh | - |
dc.contributor.author | Eun Ja Lim | - |
dc.contributor.author | Seonhwa Lee | - |
dc.contributor.author | Sung Mook Choi | - |
dc.contributor.author | Kim, WB | - |
dc.date.accessioned | 2017-07-19T13:52:19Z | - |
dc.date.available | 2017-07-19T13:52:19Z | - |
dc.date.created | 2017-02-28 | - |
dc.date.issued | 2014-05 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/37772 | - |
dc.description.abstract | Reduced graphene oxide (RGO)-supported bimetallic Pd-Pt nanostructures with core-shell Pd@Pt (Pd@Pt/RGO) and alloyed PdPt (PdPt/RGO) were prepared by a one-pot reduction approach using L-ascorbic acid for the reduction of both the metal precursors and the graphene oxide supports. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), and Raman spectroscopy revealed that the three-dimensionally shaped Pd-Pt nanostructures were uniformly deposited onto the reduced graphene oxide surface. The RGO-supported core-shell Pd@Pt and alloyed PdPt catalysts were confirmed and investigated by high-angle annular dark-field scanning TEM (HADDF-STEM) with energy-dispersive X-ray spectroscopy (EDX) in addition to X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), and cyclic voltammetry (CV). With the synergetic effects of the binary Pd-Pt system and the RGO support, these catalysts exhibited considerably enhanced catalytic activities and stabilities for the oxidation of methanol in an alkaline solution compared to monometallic Pt/RGO and commercially available carbon-supported Pt (Pt/C) catalysts. The star-shaped core-shell Pd@Pt/RGO catalysts exhibited the greatest improvement in electrocatalytic performance in terms of current density, onset potential, stability, and the charge transfer rate. | - |
dc.language | English | - |
dc.publisher | Royal Society of Chemistry | - |
dc.relation.isPartOf | Journal of Materials Chemistry A | - |
dc.title | Star-shaped Pd@Pt Core-shell Catalysts Supported on Reduced Graphene Oxide with Superior Electrocatalytic Performance | - |
dc.type | Article | - |
dc.identifier.doi | 10.1039/C4TA00070F | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | Journal of Materials Chemistry A, v.2, no.19, pp.6976 - 6986 | - |
dc.identifier.wosid | 000334835800038 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 6986 | - |
dc.citation.number | 19 | - |
dc.citation.startPage | 6976 | - |
dc.citation.title | Journal of Materials Chemistry A | - |
dc.citation.volume | 2 | - |
dc.contributor.affiliatedAuthor | Kim, WB | - |
dc.identifier.scopusid | 2-s2.0-84898880016 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 103 | - |
dc.description.scptc | 90 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | OXYGEN REDUCTION ELECTROCATALYSTS | - |
dc.subject.keywordPlus | RAY-ABSORPTION SPECTROSCOPY | - |
dc.subject.keywordPlus | FUEL-CELLS | - |
dc.subject.keywordPlus | METHANOL ELECTROOXIDATION | - |
dc.subject.keywordPlus | GRAPHITE OXIDE | - |
dc.subject.keywordPlus | ALLOY NANODENDRITES | - |
dc.subject.keywordPlus | ETHANOL OXIDATION | - |
dc.subject.keywordPlus | ALKALINE MEDIA | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
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