Boosting hot electron flux and catalytic activity at metal-oxide interfaces of PtCo bimetallic nanoparticles

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dc.contributor.authorLee, Hyosunko
dc.contributor.authorLim, Juhyungko
dc.contributor.authorLee, Changhwanko
dc.contributor.authorBack, Seoinko
dc.contributor.authorAn, Kwangjinko
dc.contributor.authorShin, Jae Wonko
dc.contributor.authorRyoo, Ryongko
dc.contributor.authorJung, Yousungko
dc.contributor.authorPark, Jeong Youngko
dc.date.accessioned2018-07-24T01:37:39Z-
dc.date.available2018-07-24T01:37:39Z-
dc.date.created2018-06-25-
dc.date.created2018-06-25-
dc.date.created2018-06-25-
dc.date.created2018-06-25-
dc.date.issued2018-06-
dc.identifier.citationNATURE COMMUNICATIONS, v.9, pp.2235 - 2242-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10203/243692-
dc.description.abstractDespite numerous studies, the origin of the enhanced catalytic performance of bimetallic nanoparticles (NPs) remains elusive because of the ever-changing surface structures, compositions, and oxidation states of NPs under reaction conditions. An effective strategy for obtaining critical clues for the phenomenon is real-time quantitative detection of hot electrons induced by a chemical reaction on the catalysts. Here, we investigate hot electrons excited on PtCo bimetallic NPs during H-2 oxidation by measuring the chemicurrent on a catalytic nanodiode while changing the Pt composition of the NPs. We reveal that the presence of a CoO/Pt interface enables efficient transport of electrons and higher catalytic activity for PtCo NPs. These results are consistent with theoretical calculations suggesting that lower activation energy and higher exothermicity are required for the reaction at the CoO/Pt interface.-
dc.languageEnglish-
dc.publisherNATURE PUBLISHING GROUP-
dc.titleBoosting hot electron flux and catalytic activity at metal-oxide interfaces of PtCo bimetallic nanoparticles-
dc.typeArticle-
dc.identifier.wosid000434644200011-
dc.identifier.scopusid2-s2.0-85048274565-
dc.type.rimsART-
dc.citation.volume9-
dc.citation.beginningpage2235-
dc.citation.endingpage2242-
dc.citation.publicationnameNATURE COMMUNICATIONS-
dc.identifier.doi10.1038/s41467-018-04713-8-
dc.contributor.localauthorRyoo, Ryong-
dc.contributor.localauthorJung, Yousung-
dc.contributor.localauthorPark, Jeong Young-
dc.contributor.nonIdAuthorLee, Hyosun-
dc.contributor.nonIdAuthorAn, Kwangjin-
dc.contributor.nonIdAuthorShin, Jae Won-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordPlusINITIO MOLECULAR-DYNAMICS-
dc.subject.keywordPlusCORE-SHELL NANOPARTICLES-
dc.subject.keywordPlusAUGMENTED-WAVE METHOD-
dc.subject.keywordPlusHYDROGEN OXIDATION-
dc.subject.keywordPlusSURFACE-CHEMISTRY-
dc.subject.keywordPlusCHEMICAL-REACTION-
dc.subject.keywordPlusNANOCRYSTALS-
dc.subject.keywordPlusNANOSTRUCTURES-
dc.subject.keywordPlusEXCITATIONS-
dc.subject.keywordPlusADSORPTION-
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