A Hollow Assembly and Its Three-Dimensional Network Formation of Single-Crystalline Co3O4 Nanoparticles for Ultrasensitive Formaldehyde Gas Sensors

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dc.contributor.authorKim, Jae Youngko
dc.contributor.authorChoi, Nak-Jinko
dc.contributor.authorPark, Hyung Juko
dc.contributor.authorKim, Jinmoko
dc.contributor.authorLee, Dae-Sikko
dc.contributor.authorSong, Hyun-Joonko
dc.date.accessioned2015-01-29T07:27:23Z-
dc.date.available2015-01-29T07:27:23Z-
dc.date.created2014-11-20-
dc.date.created2014-11-20-
dc.date.issued2014-11-
dc.identifier.citationJOURNAL OF PHYSICAL CHEMISTRY C, v.118, no.45, pp.25994 - 26002-
dc.identifier.issn1932-7447-
dc.identifier.urihttp://hdl.handle.net/10203/193904-
dc.description.abstractThe detection of formaldehyde at a very low concentration is a significant research topic, due to its detrimental impact on human health. In the present study, we fabricated a hierarchical structure by the rational assembly of single-crystalline Co3O4 nanoparticles. A hollow morphology using sacrificial ZnO spheres could form a three-dimensional conducting network in a solid state. The resulting structure was selectively active for formaldehyde sensing, and the detection limit was 50 ppb, which was nearly close to the record-high value among the other semiconducting materials. Such superior properties were attributed to the regular, hierarchically assembled structures with a small crystalline domain size, a thin hollow morphology with a large surface area, and a three-dimensional conductive network with a narrow diameter. We believe that this hierarchical assembly can show great potential as a platform for improving human health through the monitoring of indoor environments.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.subjectNIO THIN-FILM-
dc.subjectSENSING PROPERTIES-
dc.subjectOXIDE NANOSTRUCTURES-
dc.subjectROOM-TEMPERATURE-
dc.subjectTIN OXIDE-
dc.subjectMETAL-
dc.subjectSENSITIVITY-
dc.subjectCO-
dc.subjectNANOCOMPOSITES-
dc.subjectPERFORMANCE-
dc.titleA Hollow Assembly and Its Three-Dimensional Network Formation of Single-Crystalline Co3O4 Nanoparticles for Ultrasensitive Formaldehyde Gas Sensors-
dc.typeArticle-
dc.identifier.wosid000344978000022-
dc.identifier.scopusid2-s2.0-84935894187-
dc.type.rimsART-
dc.citation.volume118-
dc.citation.issue45-
dc.citation.beginningpage25994-
dc.citation.endingpage26002-
dc.citation.publicationnameJOURNAL OF PHYSICAL CHEMISTRY C-
dc.identifier.doi10.1021/jp505791v-
dc.contributor.localauthorSong, Hyun-Joon-
dc.contributor.nonIdAuthorChoi, Nak-Jin-
dc.contributor.nonIdAuthorPark, Hyung Ju-
dc.contributor.nonIdAuthorLee, Dae-Sik-
dc.type.journalArticleArticle-
dc.subject.keywordPlusNIO THIN-FILM-
dc.subject.keywordPlusSENSING PROPERTIES-
dc.subject.keywordPlusOXIDE NANOSTRUCTURES-
dc.subject.keywordPlusROOM-TEMPERATURE-
dc.subject.keywordPlusTIN OXIDE-
dc.subject.keywordPlusMETAL-
dc.subject.keywordPlusSENSITIVITY-
dc.subject.keywordPlusCO-
dc.subject.keywordPlusNANOCOMPOSITES-
dc.subject.keywordPlusPERFORMANCE-
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