Promotional effects of ZnO-branching and Au-functionalization on the surface of SnO2 nanowires for NO2 sensing
DC Field | Value | Language |
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dc.contributor.author | Choi, Myung Sik | - |
dc.contributor.author | Bang, Jae Hoon | - |
dc.contributor.author | Mirzaei, Ali | - |
dc.contributor.author | Oum, Wansik | - |
dc.contributor.author | Na, Han Gil | - |
dc.contributor.author | Jin, Changhyun | - |
dc.contributor.author | Kim, Sang Sub | - |
dc.contributor.author | Kim, Hyoun Woo | - |
dc.date.accessioned | 2021-08-02T11:52:23Z | - |
dc.date.available | 2021-08-02T11:52:23Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2019-05 | - |
dc.identifier.issn | 0925-8388 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/14177 | - |
dc.description.abstract | Branched nanowires (b-NWs) have been used for advanced applications because of their nanoscale dimensions, high surface area, and scalable synthetic methods. Herein, for the first time, we report the fabrication of Au-functionalized ZnO-branched SnO2 NWs for enhanced gas sensing application. As-fabricated NWs were structurally and morphologically investigated by X-ray diffraction, scanning electron microscopy as well as transmission electron microscopy to reveals the crystallinity and morphology of NWs. By comparing the gas sensing properties of Au-functionalized b-NWs, b-NWs, and pristine SnO2 NWs gas sensors, in terms of their sensitivity and cross-sensitivity towards NO2, we demonstrate the superior sensing properties of Au-functionalized b-NWs sensors. In particular the Au-functionalized b-NWs sensor showed a response (R-g/R-a) of 13.07 to 10 ppm NO2 gas which was higher than those of b-NWs, and pristine SnO2 NWs gas sensors. In addition to the special architecture of sensors (i.e. ZnO b-NWs on SnO(2 )NWs), which produces a large number of hetero- and homojunctions (a branching effect), Au acts as a catalyst to further improve the sensing characteristics of this particular sensor (a functionalization effect). According to the obtained results, we believe that metal oxide gas sensors based on noble metal-functionalized b-NWs, which use a facile synthesis procedure and produce enhanced sensing performance, will play a vital role in the future of the sensor industry. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Promotional effects of ZnO-branching and Au-functionalization on the surface of SnO2 nanowires for NO2 sensing | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hyoun Woo | - |
dc.identifier.doi | 10.1016/j.jallcom.2019.01.311 | - |
dc.identifier.scopusid | 2-s2.0-85060756311 | - |
dc.identifier.wosid | 000461778600004 | - |
dc.identifier.bibliographicCitation | JOURNAL OF ALLOYS AND COMPOUNDS, v.786, pp.27 - 39 | - |
dc.relation.isPartOf | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.title | JOURNAL OF ALLOYS AND COMPOUNDS | - |
dc.citation.volume | 786 | - |
dc.citation.startPage | 27 | - |
dc.citation.endPage | 39 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Metallurgy & Metallurgical Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Metallurgy & Metallurgical Engineering | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | SENSOR | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
dc.subject.keywordPlus | HETEROSTRUCTURES | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | NANOTUBE | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | SIZE | - |
dc.subject.keywordAuthor | Branched nanowire | - |
dc.subject.keywordAuthor | Gas sensor | - |
dc.subject.keywordAuthor | SnO2-ZnO | - |
dc.subject.keywordAuthor | NO2 | - |
dc.subject.keywordAuthor | Au | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0925838819303378?via%3Dihub | - |
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