A tailored oxide interface creates dense Pt single-atom catalysts with high catalytic activity

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dc.contributor.authorYoo, Miko
dc.contributor.authorYu, Young-Sangko
dc.contributor.authorHa, Hyunwooko
dc.contributor.authorLee, Siwonko
dc.contributor.authorChoi, Jin-Seokko
dc.contributor.authorOh, Sunyoungko
dc.contributor.authorKang, Eunjiko
dc.contributor.authorChoi, Hyukko
dc.contributor.authorAn, Hyesungko
dc.contributor.authorLee, Kug-Seungko
dc.contributor.authorPark, Jeong Youngko
dc.contributor.authorCelestre, Richardko
dc.contributor.authorMarcus, Matthew A.ko
dc.contributor.authorNowrouzi, Kasrako
dc.contributor.authorTaube, Dougko
dc.contributor.authorShapiro, David A.ko
dc.contributor.authorJung, WooChulko
dc.contributor.authorKim, Chunjoongko
dc.contributor.authorKim, Hyun Youko
dc.date.accessioned2020-05-11T07:20:12Z-
dc.date.available2020-05-11T07:20:12Z-
dc.date.created2020-01-28-
dc.date.created2020-01-28-
dc.date.created2020-01-28-
dc.date.created2020-01-28-
dc.date.issued2020-04-
dc.identifier.citationENERGY & ENVIRONMENTAL SCIENCE, v.13, no.4, pp.1231 - 1239-
dc.identifier.issn1754-5692-
dc.identifier.urihttp://hdl.handle.net/10203/274162-
dc.description.abstractHighly reactive dense Pt single-atoms stabilized on an oxide support can resolve a grand challenge in the economic use of Pt in catalysis. The maximized number density of reaction sites provided by dense Pt single-atoms guarantees the improved catalytic performance of Pt combined with high efficiency. By manipulating the chemical nature of multi-component interfaces, we synthesized CO-tolerant dense Pt single-atoms highly reactive for the CO oxidation reaction, which governs the key steps for chemical energy conversion and emission control. The addition of 1 wt% of Ce to TiO2 support particles creates a CeOx-TiO2 interface that stabilizes Pt single-atoms by strong electronic interactions. Dense Pt single-atoms formed on CeOx/TiO2 oxides exhibit 15.1 times greater specific mass activity toward CO oxidation at 140 degrees C compared with a bare Pt/TiO2 catalyst. We elaborate how the CeOx-TiO2 interfaces activate the interface-mediated Mars-van Krevelen mechanism of CO oxidation and protect Pt single-atoms from CO-poisoning. Through a comprehensive interpretation of the formation and activation of dense Pt single-atoms using operando X-ray absorption spectroscopy, density functional theory calculations, and experimental catalyst performance tests, we provide a key that enables the catalytic performance of noble metal single-atom catalysts to be optimized by atomic-scale tuning of the metal-support interface.-
dc.languageEnglish-
dc.publisherRoyal Society of Chemistry-
dc.titleA tailored oxide interface creates dense Pt single-atom catalysts with high catalytic activity-
dc.typeArticle-
dc.identifier.wosid000528728700017-
dc.identifier.scopusid2-s2.0-85082760998-
dc.type.rimsART-
dc.citation.volume13-
dc.citation.issue4-
dc.citation.beginningpage1231-
dc.citation.endingpage1239-
dc.citation.publicationnameENERGY & ENVIRONMENTAL SCIENCE-
dc.identifier.doi10.1039/c9ee03492g-
dc.contributor.localauthorPark, Jeong Young-
dc.contributor.localauthorJung, WooChul-
dc.contributor.nonIdAuthorYoo, Mi-
dc.contributor.nonIdAuthorYu, Young-Sang-
dc.contributor.nonIdAuthorHa, Hyunwoo-
dc.contributor.nonIdAuthorChoi, Jin-Seok-
dc.contributor.nonIdAuthorKang, Eunji-
dc.contributor.nonIdAuthorChoi, Hyuk-
dc.contributor.nonIdAuthorAn, Hyesung-
dc.contributor.nonIdAuthorLee, Kug-Seung-
dc.contributor.nonIdAuthorCelestre, Richard-
dc.contributor.nonIdAuthorMarcus, Matthew A.-
dc.contributor.nonIdAuthorNowrouzi, Kasra-
dc.contributor.nonIdAuthorTaube, Doug-
dc.contributor.nonIdAuthorShapiro, David A.-
dc.contributor.nonIdAuthorKim, Chunjoong-
dc.contributor.nonIdAuthorKim, Hyun You-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusWATER-GAS SHIFT-
dc.subject.keywordPlusCO OXIDATION-
dc.subject.keywordPlusPREFERENTIAL OXIDATION-
dc.subject.keywordPlusCLUSTERS-
dc.subject.keywordPlusGOLD-
dc.subject.keywordPlusSELECTIVITY-
dc.subject.keywordPlusIDENTIFICATION-
dc.subject.keywordPlusDISPERSION-
dc.subject.keywordPlusOXYGEN-
dc.subject.keywordPlusSITES-
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