Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Byoun,Young Min | - |
dc.contributor.author | Choi, Sun-Woo | - |
dc.contributor.author | Byun, Young Tae | - |
dc.date.accessioned | 2024-01-12T03:01:57Z | - |
dc.date.available | 2024-01-12T03:01:57Z | - |
dc.date.created | 2022-04-06 | - |
dc.date.issued | 2022-07 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | https://pubs.kist.re.kr/handle/201004/76685 | - |
dc.description.abstract | For the discriminative detection of trace amounts of certain gas molecules in ambient environments, the gas response, selectivity, and humidity independence of sensing characteristics should be improved to realise real-time environmental monitoring applications. In this study, we implement a NO2 gas sensor operating at room temperature with excellent selectivity. The fabricated sensor exhibits good NO2 response even under a humid atmosphere between 33% and 76% RH (RH = relative humidity), compared with previously reported carbon-based sensing materials. To synthesise Pt-functionalised defect-induced single-walled carbon nanotubes (SWCNTs), pure SWCNTs are heat treated at 700 degrees C for 1 h under an Ar atmosphere for defect formation; subsequently, nanosized Pt particles are randomly functionalised on the surfaces of defect-induced SWCNTs via optimal ultraviolet irradiation. The Pt-functionalised defect-induced SWCNTs achieves high NO2 response, low detection limit (67 ppb), strong selectivity, good reversibility, and the ability to detect NO2 under a humid atmosphere. However, they exhibit only moderately improved humidity-immune NO2 sensing characteristics. The NO2 response of both the Pt-functionalised and defect-induced SWCNTs deteriorates significantly in a humid atmosphere (76% RH). These results show that Pt-functionalised defect-induced SWCNTs are a promising sensing material for the detection of NO2 gas in real-time applications. | - |
dc.language | English | - |
dc.publisher | Elsevier BV | - |
dc.title | Realisation of highly sensitive and selective NO2 detection at room temperature utilizing defect-induced single-walled carbon nanotubes combined with Pt functionalisation | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.apsusc.2022.153068 | - |
dc.description.journalClass | 1 | - |
dc.identifier.bibliographicCitation | Applied Surface Science, v.590 | - |
dc.citation.title | Applied Surface Science | - |
dc.citation.volume | 590 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.wosid | 000790737100003 | - |
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