Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김현우 | - |
dc.date.accessioned | 2020-08-27T04:34:15Z | - |
dc.date.available | 2020-08-27T04:34:15Z | - |
dc.date.issued | 2019-08 | - |
dc.identifier.citation | SENSORS AND ACTUATORS B-CHEMICAL, v. 293, Page. 210-223 | en_US |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S092540051930646X?via%3Dihub | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/152643 | - |
dc.description.abstract | In the present study, ZnO nanofibers (NFs) were synthesized by the simple electrospinning technique for gas sensing studies. ZnO NFs were irradiated with a high-energy (1 MeV) electron beam (e-beam) at different doses (50, 100, and 150 kGy) to study the effect of the e-beam dose on the sensing performance of the synthesized ZnO NFs. H-2 sensing studies showed that the sensing properties of the unirradiated and 50 kGy-irradiated sensors were similar, which indicates that this e-beam dose was insufficient. However, the sensing characteristics improved with an increase in the irradiation dose to 100 and 150 kGy. The response of the optimal sensor (150-kGy-irradiated) to 10 ppm H-2 was much higher than that to other (interfering) gases (e.g., C2H5OH, C6H6, C7H8, and CO). The observed high gas response of the 150 kGy-irradiated sensor was attributed to its high surface area resulting from the one-dimensional nature of the ZnO NFs, the grain size of ZnO, and the formation of surface defects by e-beam irradiation. The high selectivity of the ZnO NFs toward H-2 gas was related mainly to the metallization of ZnO and the concentration gradient of carfbon across the NF surfaces. Overall, the findings demonstrate the effectiveness of high-energy irradiation in enhancing the sensing performance of ZnO NFs. We believe that this approach can be extended to other metal oxides for the enhancement of sensing performance. | en_US |
dc.description.sponsorship | This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1A6A1A03013422). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ELSEVIER SCIENCE SA | en_US |
dc.subject | Electron-beam irradiation | en_US |
dc.subject | Nanofibers | en_US |
dc.subject | ZnO | en_US |
dc.subject | Gas sensor | en_US |
dc.subject | Sensing mechanism | en_US |
dc.subject | H-2 | en_US |
dc.title | Design of supersensitive and selective ZnO-nanofiber-based sensors for H-2 gas sensing by electron-beam irradiation | en_US |
dc.type | Article | en_US |
dc.relation.volume | 293 | - |
dc.identifier.doi | 10.1016/j.snb.2019.04.113 | - |
dc.relation.page | 210-223 | - |
dc.relation.journal | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.contributor.googleauthor | Kim, Jae-Hun | - |
dc.contributor.googleauthor | Mirzaei, Ali | - |
dc.contributor.googleauthor | Kim, Hyoun Woo | - |
dc.contributor.googleauthor | Wu, Ping | - |
dc.contributor.googleauthor | Kim, Sang Sub | - |
dc.relation.code | 2019002468 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DIVISION OF MATERIALS SCIENCE AND ENGINEERING | - |
dc.identifier.pid | hyounwoo | - |
dc.identifier.researcherID | AAH-2115-2020 | - |
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