Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 최선진 | - |
dc.date.accessioned | 2020-08-10T05:31:09Z | - |
dc.date.available | 2020-08-10T05:31:09Z | - |
dc.date.issued | 2019-10 | - |
dc.identifier.citation | ADVANCED FUNCTIONAL MATERIALS, v. 29, no. 42, article no. 1903012 | en_US |
dc.identifier.issn | 1616-301X | - |
dc.identifier.issn | 1616-3028 | - |
dc.identifier.uri | https://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201903012 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/152128 | - |
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. | en_US |
dc.description.sponsorship | This work was supported by Wearable Platform Materials Technology Center (WMC) funded by National Research Foundation of Korea (NRF) Grant of the Korean Government (MSIP) (No. 2016R1A5A1009926). This research was supported by Creative Materials Discovery Program through the NRF funded by Ministry of Science and ICT (NRF-2018M3D1A1089342). This research was also supported by Research and Business Development Program through the Korea Institute for Advancement of Technology (KIAT) funded by the Ministry of Trade, Industry and Energy (MOTIE) (N02180052). This work was supported by Nano-Convergence Foundation funded by the Ministry of Science and ICT (MSIT, Korea) & the Ministry of Trade, Industry and Energy (MOTIE, Korea) (Project Number: 20000230). | en_US |
dc.language.iso | en | en_US |
dc.publisher | WILEY-V C H VERLAG GMBH | en_US |
dc.subject | exfoliation | en_US |
dc.subject | galvanic replacement | en_US |
dc.subject | gas sensors | en_US |
dc.subject | porosity | en_US |
dc.title | Heterogeneous, Porous 2D Oxide Sheets via Rapid Galvanic Replacement: Toward Superior HCHO Sensing Application | en_US |
dc.type | Article | en_US |
dc.relation.no | 42 | - |
dc.relation.volume | 29 | - |
dc.identifier.doi | 10.1002/adfm.201903012 | - |
dc.relation.page | 1-10 | - |
dc.relation.journal | ADVANCED FUNCTIONAL MATERIALS | - |
dc.contributor.googleauthor | Jang, Ji-Soo | - |
dc.contributor.googleauthor | Lee, Sang-Eun | - |
dc.contributor.googleauthor | Choi, Seon-Jin | - |
dc.contributor.googleauthor | Koo, Won-Tae | - |
dc.contributor.googleauthor | Kim, Dong-Ha | - |
dc.contributor.googleauthor | Shin, Hamin | - |
dc.contributor.googleauthor | Park, Hee Jung | - |
dc.contributor.googleauthor | Kim, Il-Doo | - |
dc.relation.code | 2019001075 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | sjchoi27 | - |
dc.identifier.researcherID | O-9898-2015 | - |
dc.identifier.orcid | https://orcid.org/0000-0001-8567-0668 | - |
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