Full metadata record
DC Field | Value | Language |
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dc.citation.number | 2 | - |
dc.citation.startPage | e202251511 | - |
dc.citation.title | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | - |
dc.citation.volume | 118 | - |
dc.contributor.author | Bezdek, Mate J. | - |
dc.contributor.author | Luo, Shao-Xiong Lennon | - |
dc.contributor.author | Ku, Kang Hee | - |
dc.contributor.author | Swager, Timothy M. | - |
dc.date.accessioned | 2023-12-21T16:19:36Z | - |
dc.date.available | 2023-12-21T16:19:36Z | - |
dc.date.created | 2022-03-08 | - |
dc.date.issued | 2021-01 | - |
dc.description.abstract | A chemiresistive sensor is described for the detection of methane (CH4), a potent greenhouse gas that also poses an explosion hazard in air. The chemiresistor allows for the low-power, low-cost, and distributed sensing of CH4 at room temperature in air with environmental implications for gas leak detection in homes, production facilities, and pipelines. Specifically, the chemiresistors are based on single-walled carbon nanotubes (SWCNTs) noncovalently functionalized with poly(4-vinylpyridine) (P4VP) that enables the incorporation of a platinum-polyoxometalate (Pt-POM) CH4 oxidation precatalyst into the sensor by P4VP coordination. The resulting SWCNT-P4VP-Pt-POM composite showed ppm-level sensitivity to CH4 and good stability to air as well as time, wherein the generation of a high-valent platinum intermediate during CH4 oxidation is proposed as the origin of the observed chemiresistive response. The chemiresistor was found to exhibit selectivity for CH4 over heavier hydrocarbons such as n-hexane, benzene, toluene, and o-xylene, as well as gases, including carbon dioxide and hydrogen. The utility of the sensor in detecting CH4 using a simple handheld multimeter was also demonstrated. | - |
dc.identifier.bibliographicCitation | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.118, no.2, pp.e202251511 | - |
dc.identifier.doi | 10.1073/pnas.2022515118 | - |
dc.identifier.issn | 0027-8424 | - |
dc.identifier.scopusid | 2-s2.0-85098978300 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/57783 | - |
dc.identifier.url | https://www.pnas.org/doi/full/10.1073/pnas.2022515118 | - |
dc.identifier.wosid | 000607277100090 | - |
dc.language | 영어 | - |
dc.publisher | NATL ACAD SCIENCES | - |
dc.title | A chemiresistive methane sensor | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | methane | - |
dc.subject.keywordAuthor | sensor | - |
dc.subject.keywordAuthor | chemiresistors | - |
dc.subject.keywordAuthor | selectors | - |
dc.subject.keywordAuthor | catalysis | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
dc.subject.keywordPlus | NATURAL-GAS | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | ACTIVATION | - |
dc.subject.keywordPlus | OXYGEN | - |
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