Exclusive and ultrasensitive detection of formaldehyde at room temperature using a flexible and monolithic chemiresistive sensor
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jo, Yong Kun | - |
dc.contributor.author | Jeong, Seong-Yong | - |
dc.contributor.author | Moon, Young Kook | - |
dc.contributor.author | Jo, Young-Moo | - |
dc.contributor.author | Yoon, Ji-Wook | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2022-02-25T08:41:27Z | - |
dc.date.available | 2022-02-25T08:41:27Z | - |
dc.date.created | 2022-02-07 | - |
dc.date.issued | 2021-08-16 | - |
dc.identifier.issn | 2041-1723 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/136843 | - |
dc.description.abstract | Formaldehyde, a probable carcinogen, is a ubiquitous indoor pollutant, but its highly selective detection has been a long-standing challenge. Herein, a chemiresistive sensor that can detect ppb-level formaldehyde in an exclusive manner at room temperature is designed. The TiO2 sensor exhibits under UV illumination highly selective detection of formaldehyde and ethanol with negligible cross-responses to other indoor pollutants. The coating of a mixed matrix membrane (MMM) composed of zeolitic imidazole framework (ZIF-7) nanoparticles and polymers on TiO2 sensing films removed ethanol interference completely by molecular sieving, enabling an ultrahigh selectivity (response ratio > 50) and response (resistance ratio > 1,100) to 5 ppm formaldehyde at room temperature. Furthermore, a monolithic and flexible sensor is fabricated successfully using a TiO2 film sandwiched between a flexible polyethylene terephthalate substrate and MMM overlayer. Our work provides a strategy to achieve exclusive selectivity and high response to formaldehyde, demonstrating the promising potential of flexible gas sensors for indoor air monitoring. Formaldehyde, a probable carcinogen, is a ubiquitous indoor pollutant, but its ultraselective detection has been a long-standing challenge. Here, the authors develop a chemiresistive sensor that can detect ppb-level formaldehyde in an exclusive manner at room temperature. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.subject | MIXED-MATRIX MEMBRANES | - |
dc.subject | GAS SEPARATION | - |
dc.subject | METAL | - |
dc.subject | PERFORMANCE | - |
dc.subject | TIO2 | - |
dc.subject | FILM | - |
dc.subject | NANOPARTICLES | - |
dc.subject | SELECTIVITY | - |
dc.subject | NANOWIRES | - |
dc.subject | HUMIDITY | - |
dc.title | Exclusive and ultrasensitive detection of formaldehyde at room temperature using a flexible and monolithic chemiresistive sensor | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1038/s41467-021-25290-3 | - |
dc.identifier.scopusid | 2-s2.0-85112710782 | - |
dc.identifier.wosid | 000686641700018 | - |
dc.identifier.bibliographicCitation | NATURE COMMUNICATIONS, v.12, no.1 | - |
dc.relation.isPartOf | NATURE COMMUNICATIONS | - |
dc.citation.title | NATURE COMMUNICATIONS | - |
dc.citation.volume | 12 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | FILM | - |
dc.subject.keywordPlus | GAS SEPARATION | - |
dc.subject.keywordPlus | HUMIDITY | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | MIXED-MATRIX MEMBRANES | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | SELECTIVITY | - |
dc.subject.keywordPlus | TIO2 | - |
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