Highly selective and sensitive xylene sensors using Ni-doped branched ZnO nanowire networks
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Woo, Hyung-Sik | - |
dc.contributor.author | Kwak, Chang-Hoon | - |
dc.contributor.author | Chung, Jae-Ho | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-04T13:05:10Z | - |
dc.date.available | 2021-09-04T13:05:10Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2015-09 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/92611 | - |
dc.description.abstract | Branched ZnO nanowires (NWs) doped with Ni were grown by a three-step vapor phase method for the sensitive and selective detection of p-xylene. ZnO NWs were directly grown on sensor substrates with Au electrodes, which were transformed into NiO NWs by the thermal evaporation of NiCl2 powder at 700 degrees C. ZnO branches doped with Ni were grown from NiO NWS by the thermal evaporation of Zn metal powder at 500 degrees C. The stem NiO NWS played the role of catalyst for the growth of ZnO branches through vapor-liquid-solid mechanism. The Ni-doped branched ZnO NWs showed enhanced gas response (S= resistance ratio) to methyl benzenes, especially to 5 ppm p-xylene (S=42.44) at 400 degrees C. This value is 1.7 and 2.5 times higher than the responses to 5 ppm toluene (5=25.73) and C2H5OH (S= 16.72), respectively, and significantly higher than the cross-responses to other interfering gases such as benzene, HCHO, trimethylamine, H-2, and CO. The selective detection of xylene was attributed to the catalytic role of the Ni component. This novel method to form catalyst-doped hierarchical ZnO NWs provides a promising approach to accomplish superior gas sensing characteristics by the synergetic combination of enhanced chemiresistive variation due to the increased number of branch-to-branch Schottky barrier contacts and the catalytic function of the Ni dopant. (C) 2015 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | GAS-SENSING PROPERTIES | - |
dc.subject | CATALYTIC-OXIDATION | - |
dc.subject | OXIDE | - |
dc.subject | METAL | - |
dc.subject | NANOBELTS | - |
dc.subject | TOLUENE | - |
dc.subject | NANOSTRUCTURES | - |
dc.subject | TRANSFORMATION | - |
dc.subject | ADSORPTION | - |
dc.subject | SPECTRA | - |
dc.title | Highly selective and sensitive xylene sensors using Ni-doped branched ZnO nanowire networks | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Chung, Jae-Ho | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1016/j.snb.2015.04.035 | - |
dc.identifier.scopusid | 2-s2.0-84928790893 | - |
dc.identifier.wosid | 000355131800048 | - |
dc.identifier.bibliographicCitation | SENSORS AND ACTUATORS B-CHEMICAL, v.216, pp.358 - 366 | - |
dc.relation.isPartOf | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.title | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.volume | 216 | - |
dc.citation.startPage | 358 | - |
dc.citation.endPage | 366 | - |
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 | GAS-SENSING PROPERTIES | - |
dc.subject.keywordPlus | CATALYTIC-OXIDATION | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | NANOBELTS | - |
dc.subject.keywordPlus | TOLUENE | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordPlus | TRANSFORMATION | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | SPECTRA | - |
dc.subject.keywordAuthor | Ni-doped ZnO | - |
dc.subject.keywordAuthor | Branched nanowire | - |
dc.subject.keywordAuthor | Gas sensor | - |
dc.subject.keywordAuthor | Xylene | - |
dc.subject.keywordAuthor | Selectivity | - |
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.