Highly sensitive and selective trimethylamine sensor using one-dimensional ZnO-Cr2O3 hetero-nanostructures
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Woo, Hyung-Sik | - |
dc.contributor.author | Na, ChanWoong | - |
dc.contributor.author | Kim, Il-Doo | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-06T18:39:29Z | - |
dc.date.available | 2021-09-06T18:39:29Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2012-06-22 | - |
dc.identifier.issn | 0957-4484 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/108143 | - |
dc.description.abstract | Highly selective and sensitive detection of trimethylamine (TMA) was achieved by the decoration of discrete p-type Cr2O3 nanoparticles on n-type ZnO nanowire (NW) networks. Semielliptical Cr2O3 nanoparticles with lateral widths of 3-8 nm were deposited on ZnO NWs by the thermal evaporation of CrCl2 at 630 degrees C, while a continuous Cr2O3 shell layer with a thickness of 30-40 nm was uniformly coated on ZnO NWs at 670 degrees C. The response (R-a/R-g: R-a, resistance in air; R-g, resistance in gas) to 5 ppm TMA of Cr2O3-decorated ZnO NWs was 17.8 at 400 degrees C, which was 2.4 times higher than that to 5 ppm C2H5OH and 4.3-8.4 times higher than those to 5 ppm p-xylene, NH3, benzene, C3H8, toluene, CO, and H-2. In contrast, both pristine ZnO and ZnO (core)-Cr2O3 (shell) nanocables (NCs) showed comparable responses to the different gases. The highly selective and sensitive detection of TMA that was achieved by the deposition of semielliptical Cr2O3 nanoparticles on ZnO NW networks was explained by the catalytic effect of Cr2O3 and the extension of the electron depletion layer via the formation of p-n junctions. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.subject | FILM GAS SENSOR | - |
dc.subject | SENSING PROPERTIES | - |
dc.subject | ROOM-TEMPERATURE | - |
dc.subject | CONDUCTION MECHANISM | - |
dc.subject | OXIDE NANOSTRUCTURES | - |
dc.subject | ZINC-OXIDE | - |
dc.subject | TIN OXIDE | - |
dc.subject | FRESHNESS | - |
dc.subject | METAL | - |
dc.subject | CHEMIRESISTORS | - |
dc.title | Highly sensitive and selective trimethylamine sensor using one-dimensional ZnO-Cr2O3 hetero-nanostructures | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1088/0957-4484/23/24/245501 | - |
dc.identifier.scopusid | 2-s2.0-84861624885 | - |
dc.identifier.wosid | 000305160500005 | - |
dc.identifier.bibliographicCitation | NANOTECHNOLOGY, v.23, no.24 | - |
dc.relation.isPartOf | NANOTECHNOLOGY | - |
dc.citation.title | NANOTECHNOLOGY | - |
dc.citation.volume | 23 | - |
dc.citation.number | 24 | - |
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.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | FILM GAS SENSOR | - |
dc.subject.keywordPlus | SENSING PROPERTIES | - |
dc.subject.keywordPlus | ROOM-TEMPERATURE | - |
dc.subject.keywordPlus | CONDUCTION MECHANISM | - |
dc.subject.keywordPlus | OXIDE NANOSTRUCTURES | - |
dc.subject.keywordPlus | ZINC-OXIDE | - |
dc.subject.keywordPlus | TIN OXIDE | - |
dc.subject.keywordPlus | FRESHNESS | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | CHEMIRESISTORS | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.