DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jang, Dawoon | ko |
dc.contributor.author | Lee, Yeunhee | ko |
dc.contributor.author | Shin, Yunseok | ko |
dc.contributor.author | Park, Sunghee | ko |
dc.contributor.author | Jo, Changbum | ko |
dc.contributor.author | Kim, Yong-Hyun | ko |
dc.contributor.author | Park, Sungjin | ko |
dc.date.accessioned | 2020-03-19T01:23:06Z | - |
dc.date.available | 2020-03-19T01:23:06Z | - |
dc.date.created | 2020-02-26 | - |
dc.date.created | 2020-02-26 | - |
dc.date.created | 2020-02-26 | - |
dc.date.issued | 2020-04 | - |
dc.identifier.citation | APPLIED CATALYSIS B-ENVIRONMENTAL, v.263 | - |
dc.identifier.issn | 0926-3373 | - |
dc.identifier.uri | http://hdl.handle.net/10203/272349 | - |
dc.description.abstract | Hybridization of the molecular active species with nanoscale materials can serve as a promising route for creating new catalytic nature. Jacobsen catalysts containing Co-O-2/N-2 structure are well known for converting epoxides to diols. Herein, the Jacobsen catalyst is hybridized with N-doped graphene-based materials. The generation of molecularly dispersed Co-O-2/N-2-N-graphene structure on the surface of graphene-based materials is revealed by X-ray absorption, solid-state nuclear magnetic resonance, and X-ray photoelectron spectroscopic measurements. The resulting hybrid shows excellent catalytic performances for electrochemical oxygen reduction reactions (ORR), such as onset (0.91 V) and half-wave (0.80 V) potentials, current density (5.38 mA/cm(2)), and turnover frequency (0.2 s(-1)). Characterizations and electrochemical measurements with control samples suggest that the Co-O-2/N-2-N-graphene structure is critical for the catalytic properties. Further study with aftercycle-samples highlighted the superior stability of the active species. Theoretical calculation suggests favored ORR reactions of the fifth axial coordination of Co-O-2/N-2 by pyridinic N dopants. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Coordination structure of Jacobsen catalyst with N-modified graphene and their electrocatalytic properties for reducing oxygen molecules | - |
dc.type | Article | - |
dc.identifier.wosid | 000510526000054 | - |
dc.identifier.scopusid | 2-s2.0-85075475542 | - |
dc.type.rims | ART | - |
dc.citation.volume | 263 | - |
dc.citation.publicationname | APPLIED CATALYSIS B-ENVIRONMENTAL | - |
dc.identifier.doi | 10.1016/j.apcatb.2019.118337 | - |
dc.contributor.localauthor | Kim, Yong-Hyun | - |
dc.contributor.nonIdAuthor | Jang, Dawoon | - |
dc.contributor.nonIdAuthor | Shin, Yunseok | - |
dc.contributor.nonIdAuthor | Park, Sunghee | - |
dc.contributor.nonIdAuthor | Jo, Changbum | - |
dc.contributor.nonIdAuthor | Park, Sungjin | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Electrocatalysts | - |
dc.subject.keywordAuthor | Coordination | - |
dc.subject.keywordAuthor | Cobalt complexes | - |
dc.subject.keywordAuthor | Oxygen reduction reaction | - |
dc.subject.keywordPlus | NITROGEN-DOPED CARBON | - |
dc.subject.keywordPlus | REDUCTION REACTION | - |
dc.subject.keywordPlus | CO | - |
dc.subject.keywordPlus | IRON | - |
dc.subject.keywordPlus | EPOXIDATION | - |
dc.subject.keywordPlus | COMPLEXES | - |
dc.subject.keywordPlus | SITES | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | DURABILITY | - |
dc.subject.keywordPlus | REACTIVITY | - |
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