High performance chemiresistive H2S sensors using Ag-loaded SnO2 yolk-shell nanostructures
DC Field | Value | Language |
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dc.contributor.author | Yoon, Ji-Wook | - |
dc.contributor.author | Hong, Young Jun | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-05T17:44:39Z | - |
dc.date.available | 2021-09-05T17:44:39Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/101220 | - |
dc.description.abstract | SnO2 yolk-shell spheres uniformly loaded with Ag nanoparticles were prepared by a facile one-pot ultrasonic spray pyrolysis of the source solution and the H2S sensing characteristics were investigated. The Ag-loaded SnO2 yolk-shell spheres showed ultrahigh and reversible response (Ra/Rg -1 = 613.9, where R-a is the resistance in air and Rg is the resistance in gas) to 5 ppm H2S with negligible cross-responses (0.6-17.3) to eight other interference gases at 350 degrees C. In contrast, pure SnO2 spheres with dense inner structures and yolk-shell morphologies did not exhibit a high response/selectivity to H2S nor reversible H2S sensing. The highly sensitive, selective, and reversible H2S sensing characteristics were explained in terms of the gas-accessible yolk-shell morphology and uniform loading of catalytic Ag nanoparticles. Namely, the gas-accessible yolk-shell morphology facilitated the rapid and effective diffusion of the analyte/oxygen gases and the uniform loading of Ag nanoparticles promoted the H2S sensing reaction. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | GAS-SENSING PROPERTIES | - |
dc.subject | THICK-FILM RESISTORS | - |
dc.subject | HYDROGEN-SULFIDE | - |
dc.subject | LOW-TEMPERATURE | - |
dc.subject | SULFUR-DIOXIDE | - |
dc.subject | PPB LEVEL | - |
dc.subject | OXIDE | - |
dc.subject | ZNO | - |
dc.subject | MICROSPHERES | - |
dc.subject | METAL | - |
dc.title | High performance chemiresistive H2S sensors using Ag-loaded SnO2 yolk-shell nanostructures | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Yun Chan | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1039/c4ra01364f | - |
dc.identifier.scopusid | 2-s2.0-84898069452 | - |
dc.identifier.wosid | 000334681800032 | - |
dc.identifier.bibliographicCitation | RSC ADVANCES, v.4, no.31, pp.16067 - 16074 | - |
dc.relation.isPartOf | RSC ADVANCES | - |
dc.citation.title | RSC ADVANCES | - |
dc.citation.volume | 4 | - |
dc.citation.number | 31 | - |
dc.citation.startPage | 16067 | - |
dc.citation.endPage | 16074 | - |
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.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.subject.keywordPlus | GAS-SENSING PROPERTIES | - |
dc.subject.keywordPlus | THICK-FILM RESISTORS | - |
dc.subject.keywordPlus | HYDROGEN-SULFIDE | - |
dc.subject.keywordPlus | LOW-TEMPERATURE | - |
dc.subject.keywordPlus | SULFUR-DIOXIDE | - |
dc.subject.keywordPlus | PPB LEVEL | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordPlus | ZNO | - |
dc.subject.keywordPlus | MICROSPHERES | - |
dc.subject.keywordPlus | METAL | - |
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