A strategy for ultrasensitive and selective detection of methylamine using p-type Cr2O3: Morphological design of sensing materials, control of charge carrier concentrations, and configurational tuning of Au catalysts
DC Field | Value | Language |
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dc.contributor.author | Kim, Tae-Hyung | - |
dc.contributor.author | Yoon, Ji-Wook | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.contributor.author | Abdel-Hady, Faissal | - |
dc.contributor.author | Wazzan, A. A. | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-03T09:09:51Z | - |
dc.date.available | 2021-09-03T09:09:51Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2017-03 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/84344 | - |
dc.description.abstract | An ultrasensitive and selective trimethylamine (TMA) sensor was fabricated by the urea-assisted uniform loading of Au nanoparticles (similar to 5nm) on Cr2O3 yolk-shell spheres prepared by ultrasonic spray pyrolysis. The response (resistance ratio) of the Cr2O3 yolk-shell spheres uniformly loaded with fine Au nanoparticles to 5 ppm TMA was 200.9 at 225 degrees C, which was significantly higher than those of pure Cr2O3 yolk-shell spheres (24.6) and Cr2O3 yolk-shell spheres loaded with heavily agglomerated Au particles (9.2). The detection limit of Cr2O3 yolk-shell spheres uniformly loaded with Au nanoparticles was as low as 4.3 ppb. The unprecedentedly high TMA response is explained and discussed in relation to the gas-accessible morphology of the yolk-shell spheres, and the catalytic and electronic promotion of the gas sensing reaction by both Cr2O3 and well-dispersed Au nanoparticles. (C) 2016 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | VOLATILE ORGANIC-COMPOUNDS | - |
dc.subject | THICK-FILMS | - |
dc.subject | GAS SENSOR | - |
dc.subject | HIERARCHICAL NANOSTRUCTURES | - |
dc.subject | RESPONSE ANALYSIS | - |
dc.subject | TEMPERATURE | - |
dc.subject | PERFORMANCE | - |
dc.subject | ETHANOL | - |
dc.subject | H-2 | - |
dc.subject | NANOREACTORS | - |
dc.title | A strategy for ultrasensitive and selective detection of methylamine using p-type Cr2O3: Morphological design of sensing materials, control of charge carrier concentrations, and configurational tuning of Au catalysts | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1016/j.snb.2016.09.098 | - |
dc.identifier.scopusid | 2-s2.0-84990886716 | - |
dc.identifier.wosid | 000390622300125 | - |
dc.identifier.bibliographicCitation | SENSORS AND ACTUATORS B-CHEMICAL, v.240, pp.1049 - 1057 | - |
dc.relation.isPartOf | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.title | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.volume | 240 | - |
dc.citation.startPage | 1049 | - |
dc.citation.endPage | 1057 | - |
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 | Electrochemistry | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.subject.keywordPlus | VOLATILE ORGANIC-COMPOUNDS | - |
dc.subject.keywordPlus | THICK-FILMS | - |
dc.subject.keywordPlus | GAS SENSOR | - |
dc.subject.keywordPlus | HIERARCHICAL NANOSTRUCTURES | - |
dc.subject.keywordPlus | RESPONSE ANALYSIS | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ETHANOL | - |
dc.subject.keywordPlus | H-2 | - |
dc.subject.keywordPlus | NANOREACTORS | - |
dc.subject.keywordAuthor | Trimethylamine | - |
dc.subject.keywordAuthor | Au nanoparticles | - |
dc.subject.keywordAuthor | Cr2O3 | - |
dc.subject.keywordAuthor | Yolk-shell spheres | - |
dc.subject.keywordAuthor | Gas sensor | - |
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