DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jang, Ji-Soo | ko |
dc.contributor.author | Lee, Sang-Eun | ko |
dc.contributor.author | Choi, Seon-Jin | ko |
dc.contributor.author | Koo, Won-Tae | ko |
dc.contributor.author | Kim, Dong Ha | ko |
dc.contributor.author | Shin, Hamin | ko |
dc.contributor.author | Park, Hee Jung | ko |
dc.contributor.author | Kim, Il-Doo | ko |
dc.date.accessioned | 2019-12-20T06:23:14Z | - |
dc.date.available | 2019-12-20T06:23:14Z | - |
dc.date.created | 2019-08-19 | - |
dc.date.issued | 2019-10 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v.29, no.42, pp.1903012 | - |
dc.identifier.issn | 1616-301X | - |
dc.identifier.uri | http://hdl.handle.net/10203/270051 | - |
dc.description.abstract | 2D heterogeneous oxide nanosheets (NSs) have attracted much attention in various scientific fields owing to their exceptional physicochemical properties. However, the fabrication of 2D oxide NSs with abundant p-n interfaces and large amounts of mesopores is extremely challenging. Here, a facile synthesis of highly porous 2D heterogeneous oxide NSs (e.g., SnO2/CoOx) is suggested through a 2D oxide exfoliation approach combined with a fast galvanic replacement reaction (GRR). The ultrathin (<5 nm) layered CoOx NSs are simply prepared by ion-exchange exfoliation and a subsequent GRR process that induces a rapid phase transition from p-type CoOx to n-type SnO2 metal oxides (<10 min). The controlled GRR process enables the creation of heterogeneous SnO2/CoOx NSs consisting of small SnO2 grain sizes (<10 nm), high porosity, numerous heterojunctions, and sub-10 nm thickness, which are highly advantageous characteristics for chemiresistive sensors. Due to the advantage of these features, the porous SnO2/CoOx NSs exhibit an unparalleled HCHO-sensing performance (R-air/R-gas > 35 @ 5 ppm with a response speed of 9.34 s) with exceptional selectivity compared to that of the state-of-the-art metal oxide-based HCHO gas sensors. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Heterogeneous, Porous 2D Oxide Sheets via Rapid Galvanic Replacement: Toward Superior HCHO Sensing Application | - |
dc.type | Article | - |
dc.identifier.wosid | 000478448900001 | - |
dc.identifier.scopusid | 2-s2.0-85069849380 | - |
dc.type.rims | ART | - |
dc.citation.volume | 29 | - |
dc.citation.issue | 42 | - |
dc.citation.beginningpage | 1903012 | - |
dc.citation.publicationname | ADVANCED FUNCTIONAL MATERIALS | - |
dc.identifier.doi | 10.1002/adfm.201903012 | - |
dc.contributor.localauthor | Kim, Il-Doo | - |
dc.contributor.nonIdAuthor | Lee, Sang-Eun | - |
dc.contributor.nonIdAuthor | Park, Hee Jung | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | exfoliation | - |
dc.subject.keywordAuthor | galvanic replacement | - |
dc.subject.keywordAuthor | gas sensors | - |
dc.subject.keywordAuthor | porosity | - |
dc.subject.keywordPlus | METAL-ORGANIC FRAMEWORK | - |
dc.subject.keywordPlus | SNO2 | - |
dc.subject.keywordPlus | FORMALDEHYDE | - |
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