Pure and Pr-doped Ce4W9O33 with superior hydroxyl scavenging ability: humidity-independent oxide chemiresistors
DC Field | Value | Language |
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dc.contributor.author | Kim, Jun-Sik | - |
dc.contributor.author | Kim, Ki Beom | - |
dc.contributor.author | Li, Hua-Yao | - |
dc.contributor.author | Na, Chan Woong | - |
dc.contributor.author | Lim, Kyeorei | - |
dc.contributor.author | Moon, Young Kook | - |
dc.contributor.author | Yoon, Ji Won | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2022-02-25T10:40:55Z | - |
dc.date.available | 2022-02-25T10:40:55Z | - |
dc.date.created | 2022-02-09 | - |
dc.date.issued | 2021-08-14 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/136851 | - |
dc.description.abstract | Water poisoning has been a long-standing problem in oxide semiconductor gas sensors. Herein, for the first time, we report that pure and Pr-doped Ce4W9O33 provide humidity-independent gas sensing characteristics. Ce4W9O33 and Pr-doped Ce4W9O33 powders with a porous structure have been successfully prepared by ultrasonic spray pyrolysis and subsequent annealing at low temperature (600 degrees C). Interestingly, these p-type oxide semiconductors exhibited nearly the same gas sensing characteristics at 300 degrees C regardless of humidity variation, whereas pure WO3 showed a significant decrease of sensor resistance and gas response when the atmosphere is changed from dry to relative humidity 80%. Furthermore, Ce4W9O33-based sensors showed highly selective and sensitive detection of ppm-level trimethylamine (TMA). Moisture-endurant gas sensing characteristics were discussed in relation to surface regeneration through the hydroxyl scavenging reaction assisted by abundant Ln(3+) (Ln = Ce, Pr) in (Ce1-xPrx)(4)W9O33 (x = 0-0.3) and TMA selectivity was explained by the acid-base interaction between the analyte gas and sensing material. Phase-pure ternary or quaternary oxides with a decreased oxidation state of lanthanide components provide a new and general strategy to design humidity-independent gas sensors with new functionality. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | PD-LOADED SNO2 | - |
dc.subject | TIN OXIDE | - |
dc.subject | SENSING PROPERTIES | - |
dc.subject | HOLLOW SPHERES | - |
dc.subject | METAL-OXIDES | - |
dc.subject | LUNG-CANCER | - |
dc.subject | GAS SENSORS | - |
dc.subject | SURFACE | - |
dc.subject | WO3 | - |
dc.subject | TEMPERATURE | - |
dc.title | Pure and Pr-doped Ce4W9O33 with superior hydroxyl scavenging ability: humidity-independent oxide chemiresistors | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1039/d1ta02618f | - |
dc.identifier.scopusid | 2-s2.0-85112617826 | - |
dc.identifier.wosid | 000664681000001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.9, no.30, pp.16359 - 16369 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 9 | - |
dc.citation.number | 30 | - |
dc.citation.startPage | 16359 | - |
dc.citation.endPage | 16369 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | GAS SENSORS | - |
dc.subject.keywordPlus | HOLLOW SPHERES | - |
dc.subject.keywordPlus | LUNG-CANCER | - |
dc.subject.keywordPlus | METAL-OXIDES | - |
dc.subject.keywordPlus | PD-LOADED SNO2 | - |
dc.subject.keywordPlus | SENSING PROPERTIES | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | TIN OXIDE | - |
dc.subject.keywordPlus | WO3 | - |
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