Co3O4-SnO2 Hollow Heteronanostructures: Facile Control of Gas Selectivity by Compositional Tuning of Sensing Materials via Galvanic Replacement
DC Field | Value | Language |
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dc.contributor.author | Jeong, Hyun-Mook | - |
dc.contributor.author | Kim, Jae-Hyeok | - |
dc.contributor.author | Jeong, Seong-Yong | - |
dc.contributor.author | Kwak, Chang-Hoon | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-04T01:19:39Z | - |
dc.date.available | 2021-09-04T01:19:39Z | - |
dc.date.created | 2021-06-17 | - |
dc.date.issued | 2016-03-30 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/89181 | - |
dc.description.abstract | Co3O4 hollow spheres prepared by ultrasonic spray pyrolysis were converted into Co3O4-SnO2 coreshell hollow spheres by galvanic replacement with subsequent calcination at 450 degrees C for 2 h for gas sensor applications. Gas selectivity of the obtained spheres can be controlled by varying the amount of SnO2 shells (14.6, 24.3, and 43.3 at. %) and sensor temperatures. Co3O4 sensors possess an ability to selectively detect ethanol at 275 degrees C. When the amount of SnO2 shells was increased to 14.6 and 24.3 at. %, highly selective detection of xylene and methylbenzenes (xylene + toluene) was achieved at 275 and 300 degrees C, respectively. Good selectivity of Co3O4 hollow spheres to ethanol can be explained by a catalytic activity of Co3O4; whereas high selectivity of Co3O4-SnO2 coreshell hollow spheres to methylbenzenes is attributed to a synergistic effect of catalytic SnO2 and Co3O4 and promotion of gas sensing reactions by a pore-size control of microreactors. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | OXYGEN REDUCTION | - |
dc.subject | OXIDE | - |
dc.subject | PERFORMANCE | - |
dc.subject | OXIDATION | - |
dc.subject | ETHANOL | - |
dc.subject | SENSORS | - |
dc.subject | HETEROJUNCTION | - |
dc.subject | NANOSTRUCTURES | - |
dc.subject | FABRICATION | - |
dc.subject | NANOWIRES | - |
dc.title | Co3O4-SnO2 Hollow Heteronanostructures: Facile Control of Gas Selectivity by Compositional Tuning of Sensing Materials via Galvanic Replacement | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1021/acsami.6b00216 | - |
dc.identifier.scopusid | 2-s2.0-84963761912 | - |
dc.identifier.wosid | 000373519500032 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.8, no.12, pp.7877 - 7883 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 8 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 7877 | - |
dc.citation.endPage | 7883 | - |
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.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordPlus | OXYGEN REDUCTION | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | ETHANOL | - |
dc.subject.keywordPlus | SENSORS | - |
dc.subject.keywordPlus | HETEROJUNCTION | - |
dc.subject.keywordPlus | NANOSTRUCTURES | - |
dc.subject.keywordAuthor | galvanic replacement | - |
dc.subject.keywordAuthor | gas sensor | - |
dc.subject.keywordAuthor | methylbenzene | - |
dc.subject.keywordAuthor | Co3O4 | - |
dc.subject.keywordAuthor | SnO2 | - |
dc.subject.keywordAuthor | heterostructure | - |
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