Hydrogen Sensors Based on MoS2 Hollow Architectures Assembled by Pickering Emulsion

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dc.contributor.authorPark, Chan Hoko
dc.contributor.authorKoo, Won-Taeko
dc.contributor.authorLee, Young Junko
dc.contributor.authorKim, Yoon Hwako
dc.contributor.authorLee, Jiyoungko
dc.contributor.authorJang, Ji-Sooko
dc.contributor.authorYun, Hongseokko
dc.contributor.authorKim, Il-Dooko
dc.contributor.authorKim, Bumjoon J.ko
dc.date.accessioned2020-09-21T07:55:16Z-
dc.date.available2020-09-21T07:55:16Z-
dc.date.created2020-08-13-
dc.date.created2020-08-13-
dc.date.issued2020-08-
dc.identifier.citationACS NANO, v.14, no.8, pp.9652 - 9661-
dc.identifier.issn1936-0851-
dc.identifier.urihttp://hdl.handle.net/10203/276370-
dc.description.abstractFor rapid hydrogen gas (H-2) sensing, we propose the facile synthesis of the hollow structure of Pt-decorated molybdenum disulfide (h-MoS2/Pt) using ultrathin (mono- or few-layer) two-dimensional nanosheets. The controlled amphiphilic nature of MoS2 surface produces ultrathin MoS, NS-covered polystyrene particles via one-step Pickering emulsification. The incorporation of Pt nanoparticles (NPs) on the MoS2, followed by pyrolysis, generates the highly porous h-MoS2/Pt. This hollow hybrid structure produces sufficiently permeable pathways for H-2 and maximizes the active sites of MoS2, while the Pt NPs on the hollow MoS2 induce catalytic H-2 spillover during H-2 sensing. The h-MoS2/Pt-based chemiresistors show sensitive H-2 sensing performances with fast sensing speed (response, 8.1 s for 1% of H-2 and 2.7 s for 4%; and recovery, 16.0 s for both 1% and 4% H-2 at room temperature in the air). These results mark the highest H-2 sensing speed among 2D material-based H-2 sensors operated at room temperature in air. Our fabrication method of h-MoS2/Pt structure through Pickering emulsion provides a versatile platform applicable to various 2D material-based hollow structures and facilitates their use in other applications involving surface reactions.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.titleHydrogen Sensors Based on MoS2 Hollow Architectures Assembled by Pickering Emulsion-
dc.typeArticle-
dc.identifier.wosid000566341000034-
dc.identifier.scopusid2-s2.0-85090078300-
dc.type.rimsART-
dc.citation.volume14-
dc.citation.issue8-
dc.citation.beginningpage9652-
dc.citation.endingpage9661-
dc.citation.publicationnameACS NANO-
dc.identifier.doi10.1021/acsnano.0c00821-
dc.contributor.localauthorKim, Il-Doo-
dc.contributor.localauthorKim, Bumjoon J.-
dc.contributor.nonIdAuthorKim, Yoon Hwa-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorhydrogen sensors-
dc.subject.keywordAuthorhollow MoS2 structure-
dc.subject.keywordAuthorPickering emulsion-
dc.subject.keywordAuthorspillover-
dc.subject.keywordAuthorrapid hydrogen sensing-
dc.subject.keywordPlusFEW-LAYER MOS2-
dc.subject.keywordPlusGRAPHENE OXIDE-
dc.subject.keywordPlusWORK FUNCTION-
dc.subject.keywordPlusTHIN-FILMS-
dc.subject.keywordPlusMETAL-
dc.subject.keywordPlusSURFACE-
dc.subject.keywordPlusTRANSITION-
dc.subject.keywordPlusH-2-
dc.subject.keywordPlusPD-
dc.subject.keywordPlusNANOPARTICLES-
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