DC Field | Value | Language |
---|---|---|
dc.contributor.author | Eom, Wonsik | ko |
dc.contributor.author | Jang, Ji-Soo | ko |
dc.contributor.author | Lee, Sang Hoon | ko |
dc.contributor.author | Lee, Eunsong | ko |
dc.contributor.author | Jeong, Woojae | ko |
dc.contributor.author | Kim, Il-Doo | ko |
dc.contributor.author | Choi, Seon-Jin | ko |
dc.contributor.author | Han, Tae Hee | ko |
dc.date.accessioned | 2021-08-09T06:10:17Z | - |
dc.date.available | 2021-08-09T06:10:17Z | - |
dc.date.created | 2021-08-09 | - |
dc.date.issued | 2021-10 | - |
dc.identifier.citation | SENSORS AND ACTUATORS B-CHEMICAL, v.344 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | http://hdl.handle.net/10203/287075 | - |
dc.description.abstract | Noble metal/metal-oxide-based hybrid gas sensors exhibit a low operating temperature, remarkable sensitivity, and fast recovery. As additives, noble metals induce a catalytic sensitization effect, which promotes charge transfer from the metal oxide to the analyte molecules, the so-called spillover mechanism. This suggests that metal catalysts can improve gas sensing performance. Herein, for the first time, non-noble metals are introduced on hybrid metal oxide/graphene fibers as sensitizers to fabricate high-performance chemiresistive sensors. The formation of metal components can be effectively controlled by annealing the metal oxide on graphene. Remarkably, compared with the corresponding metal oxide/graphene fiber sensors without metal components, the metal/metal oxide/graphene fiber sensors exhibit over a 16-fold higher response to NO2 gas as well as effective recovery characteristics. Specifically, the Cu/Cu2O/graphene and Ni/NiO/graphene fiber sensors operating at 150 degrees C exhibit sensitivities of 18.90 % and 0.82 %, respectively, for 5 ppm NO2 gas. The proposed strategy to achieve flexible graphene fiber chemiresistors by decorating them with non-noble metal and metal oxide nanoparticles opens a new avenue for realizing high-performance devices, such as photovoltaic devices, photocatalysts, and chemical catalysts. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Effect of metal/metal oxide catalysts on graphene fiber for improved NO2 sensing | - |
dc.type | Article | - |
dc.identifier.wosid | 000679289000007 | - |
dc.identifier.scopusid | 2-s2.0-85107689089 | - |
dc.type.rims | ART | - |
dc.citation.volume | 344 | - |
dc.citation.publicationname | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.identifier.doi | 10.1016/j.snb.2021.130231 | - |
dc.contributor.localauthor | Kim, Il-Doo | - |
dc.contributor.nonIdAuthor | Eom, Wonsik | - |
dc.contributor.nonIdAuthor | Lee, Sang Hoon | - |
dc.contributor.nonIdAuthor | Lee, Eunsong | - |
dc.contributor.nonIdAuthor | Jeong, Woojae | - |
dc.contributor.nonIdAuthor | Choi, Seon-Jin | - |
dc.contributor.nonIdAuthor | Han, Tae Hee | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Graphene fibers | - |
dc.subject.keywordAuthor | Gas sensors | - |
dc.subject.keywordAuthor | Sensitization | - |
dc.subject.keywordAuthor | Non-noble metals | - |
dc.subject.keywordAuthor | Catalytic deoxidation | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | HETEROJUNCTIONS | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NANOFIBERS | - |
dc.subject.keywordPlus | HYBRID | - |
dc.subject.keywordPlus | CU2O | - |
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