Attachment of Co₃O₄ layer to SnO₂ nanowires for enhanced gas sensing properties
DC Field | Value | Language |
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dc.contributor.author | Kwon, Yong Jung | - |
dc.contributor.author | Na, Han Gil | - |
dc.contributor.author | Kang, Sung Yong | - |
dc.contributor.author | Choi, Myung Sik | - |
dc.contributor.author | Bang, Jae Hoon | - |
dc.contributor.author | Kim, Tae Whan | - |
dc.contributor.author | Mirzaei, Ali | - |
dc.contributor.author | Kim, Hyoun Woo | - |
dc.date.accessioned | 2021-08-02T15:31:53Z | - |
dc.date.available | 2021-08-02T15:31:53Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2017-02 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/20571 | - |
dc.description.abstract | We prepared nanocomposites of n-SnO₂/p-Co₃O₄ for application in chemical sensors. In order to fabricate p-Co₃O₄-decorated n-SnO₂ nanowires, we sputtered a Co layer and subsequently annealed the material in air ambient. Characterization revealed that crystalline cubic Co₃O₄ with a tubular-like structure was attached to the surface of SnO₂ core nanowires. We carried out sensing tests at 573 K in at NO₂ gas concentrations ranging between 2 and 10 ppm. The sensor response was increased both by adding the Co₃O₄ layer and also by decreasing the thickness of the Co₃O₄ layer from 19.2 to 6.4 nm. We proposed possible mechanisms to explain the enhanced sensor properties obtained by Co₃O₄-functionalization. Co₃O₄-functionalized SnO₂ nanowires exhibited a higher sensor response than pristine nanowires, not only due to the heterostructure-induced depletion of n-SnO₂ region but also due to the surface effects of Co₃O₄. The generation of hole-accumulated Co₃O₄ layer in case of thicker-layered nanowires will decrease the sensor response. We demonstrated that Co₃O₄-functionalized SnO₂ nanowire sensors can be used as gas sensors at very low concentrations. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Attachment of Co₃O₄ layer to SnO₂ nanowires for enhanced gas sensing properties | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Tae Whan | - |
dc.contributor.affiliatedAuthor | Kim, Hyoun Woo | - |
dc.identifier.doi | 10.1016/j.snb.2016.07.177 | - |
dc.identifier.scopusid | 2-s2.0-84982803659 | - |
dc.identifier.wosid | 000388951300022 | - |
dc.identifier.bibliographicCitation | SENSORS AND ACTUATORS B-CHEMICAL, v.239, pp.180 - 192 | - |
dc.relation.isPartOf | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.title | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.citation.volume | 239 | - |
dc.citation.startPage | 180 | - |
dc.citation.endPage | 192 | - |
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 | Electrochemistry | - |
dc.relation.journalResearchArea | Instruments & Instrumentation | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Instruments & Instrumentation | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | CO | - |
dc.subject.keywordPlus | NANORODS | - |
dc.subject.keywordPlus | HYDROGEN | - |
dc.subject.keywordPlus | SENSORS | - |
dc.subject.keywordPlus | IN2O3 | - |
dc.subject.keywordPlus | NANOMATERIALS | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | NETWORK | - |
dc.subject.keywordAuthor | SnO2 | - |
dc.subject.keywordAuthor | Nanowires | - |
dc.subject.keywordAuthor | Co3O4 | - |
dc.subject.keywordAuthor | Sensors | - |
dc.subject.keywordAuthor | NO2 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0925400516312217?via%3Dihub | - |
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