NiO/NiWO4 Composite Yolk-Shell Spheres with Nanoscale NiO Outer Layer for Ultrasensitive and Selective Detection of Subppm-level p-Xylene
DC Field | Value | Language |
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dc.contributor.author | Kim, Tae-Hyung | - |
dc.contributor.author | Kwak, Chang-Hoon | - |
dc.contributor.author | Lee, Jong-Heun | - |
dc.date.accessioned | 2021-09-03T01:10:16Z | - |
dc.date.available | 2021-09-03T01:10:16Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2017-09-20 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/82206 | - |
dc.description.abstract | NiO/NiWO4 composite yolk shell spheres with a nanoscale NiO outer layer were prepared using one-pot ultrasonic spray pyrolysis and their gas sensing characteristics were studied. The NiO/NiWO4 yolk shell spheres exhibited an extremely high response to 5 ppm p-xylene (ratio of resistance to gas and air = 343.5) and negligible cross -responses to 5 ppm ethanol, ammonia, carbon monoxide, hydrogen, and benzene, whereas pure NiO yolk shell spheres showed very low responses and selectivity to all the analyte gases. The detection limit for p-xylene was as low as 22.7 ppb. This ultrasensitive and selective detection of p-xylene is attributed to a synergistic catalytic effect between NiO and NiWO4, high gas accessibility with large specific surface area, and increased chemiresistive variation due to the formation of a heterojunction. The NiO/NiWO4 yolk shell spheres with a thin NiO outer layer can be used to detect subppm-level p-xylene in a highly sensitive and selective manner for monitoring indoor air pollution. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | STATE CHEMICAL-SYNTHESIS | - |
dc.subject | GAS SENSOR | - |
dc.subject | HOLLOW MICROSPHERES | - |
dc.subject | CATALYTIC-OXIDATION | - |
dc.subject | SENSING PROPERTIES | - |
dc.subject | THIN-FILM | - |
dc.subject | PHOTOCATALYTIC PERFORMANCE | - |
dc.subject | OXIDE NANOSTRUCTURES | - |
dc.subject | SENSITIVE DETECTION | - |
dc.subject | TOLUENE | - |
dc.title | NiO/NiWO4 Composite Yolk-Shell Spheres with Nanoscale NiO Outer Layer for Ultrasensitive and Selective Detection of Subppm-level p-Xylene | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Heun | - |
dc.identifier.doi | 10.1021/acsami.7b10294 | - |
dc.identifier.scopusid | 2-s2.0-85029685827 | - |
dc.identifier.wosid | 000411771400087 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.9, no.37, pp.32034 - 32043 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 9 | - |
dc.citation.number | 37 | - |
dc.citation.startPage | 32034 | - |
dc.citation.endPage | 32043 | - |
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 | STATE CHEMICAL-SYNTHESIS | - |
dc.subject.keywordPlus | GAS SENSOR | - |
dc.subject.keywordPlus | HOLLOW MICROSPHERES | - |
dc.subject.keywordPlus | CATALYTIC-OXIDATION | - |
dc.subject.keywordPlus | SENSING PROPERTIES | - |
dc.subject.keywordPlus | THIN-FILM | - |
dc.subject.keywordPlus | PHOTOCATALYTIC PERFORMANCE | - |
dc.subject.keywordPlus | OXIDE NANOSTRUCTURES | - |
dc.subject.keywordPlus | SENSITIVE DETECTION | - |
dc.subject.keywordPlus | TOLUENE | - |
dc.subject.keywordAuthor | p-xylene | - |
dc.subject.keywordAuthor | NiO/NiWO4 | - |
dc.subject.keywordAuthor | mesopore | - |
dc.subject.keywordAuthor | heterostructure | - |
dc.subject.keywordAuthor | gas sensor | - |
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