Room temperature NO2 sensing performance of a-C-decorated TeO2 nanowires
DC Field | Value | Language |
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dc.contributor.author | Oum, Wansik | - |
dc.contributor.author | Mirzaei, Ali | - |
dc.contributor.author | Hussain, Tanveer | - |
dc.contributor.author | Bang, Jae Hoon | - |
dc.contributor.author | Han, Seungmin | - |
dc.contributor.author | Shin, Ka Yoon | - |
dc.contributor.author | Yu, Dong Jae | - |
dc.contributor.author | Kang, Sukwoo | - |
dc.contributor.author | Kaewmaraya, Thanayut | - |
dc.contributor.author | Kim, Sang Sub | - |
dc.contributor.author | Kim, Hyoun Woo | - |
dc.date.accessioned | 2022-07-19T04:51:31Z | - |
dc.date.available | 2022-07-19T04:51:31Z | - |
dc.date.created | 2022-05-04 | - |
dc.date.issued | 2022-07 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/170055 | - |
dc.description.abstract | TeO2 is a semiconducting metal oxide that is not popular for sensing studies due to its poor sensing performance in its pristine form. To enhance its sensing performance, we deposited amorphous carbon (a-C) on its surface. We first synthesized TeO2 nanowires using a thermal evaporation method, and then we deposited an a-C layer on them by a simple procedure using a flame carbon vapor deposition technique. We showed that the a-C-decorated sensor had a lower optimized sensing temperature (26 °C) relative to the pristine TeO2 sensor (50 °C) and presented a higher sensitivity to NO2 gas. The maximum responses to NO2 (10 ppm) were 1.918 and 1.468 for a-C-decorated and pristine TeO2 nanowires, respectively. Furthermore, the a-C-decorated sensor indicated outstanding selectivity toward NO2. The high performance of a-C-decorated sensor was results of its higher surface area created by the bumpy carbon layer on the surface of TeO2 nanowires as well as the electronic sensitization due to the a-C layer. We also confirmed NO2 sensing behaviors of bare and a-C-decorated TeO2 nanowires using density functional theory (DFT) calculations, where calculated binding energies between NO2 and the sensing layer were stronger for NO2 and a-C-decorated TeO2 nanowire gas sensor relative to pristine gas sensors. The present approach for enhancing the sensing of TeO2 nanowires can be extended to other sensor systems as a simple, inexpensive strategy to improve sensor performance. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Room temperature NO2 sensing performance of a-C-decorated TeO2 nanowires | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hyoun Woo | - |
dc.identifier.doi | 10.1016/j.snb.2022.131853 | - |
dc.identifier.scopusid | 2-s2.0-85127816513 | - |
dc.identifier.wosid | 000806153500002 | - |
dc.identifier.bibliographicCitation | Sensors and Actuators B: Chemical, v.363, pp.1 - 13 | - |
dc.relation.isPartOf | Sensors and Actuators B: Chemical | - |
dc.citation.title | Sensors and Actuators B: Chemical | - |
dc.citation.volume | 363 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 13 | - |
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 | INITIO MOLECULAR-DYNAMICS | - |
dc.subject.keywordPlus | SENSOR | - |
dc.subject.keywordAuthor | a-C-decoration | - |
dc.subject.keywordAuthor | DFT calculations | - |
dc.subject.keywordAuthor | Gas sensor | - |
dc.subject.keywordAuthor | NO2 gas | - |
dc.subject.keywordAuthor | TeO2 nanowire | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0925400522004956?via%3Dihub | - |
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