DC Field | Value | Language |
---|---|---|
dc.contributor.author | Van Hoang, Nguyen | ko |
dc.contributor.author | Hung, Chu Manh | ko |
dc.contributor.author | Hoa, Nguyen Duc | ko |
dc.contributor.author | Van Duy, Nguyen | ko |
dc.contributor.author | Park, Inkyu | ko |
dc.contributor.author | Van Hieu, Nguyen | ko |
dc.date.accessioned | 2019-01-23T06:53:02Z | - |
dc.date.available | 2019-01-23T06:53:02Z | - |
dc.date.created | 2019-01-21 | - |
dc.date.created | 2019-01-21 | - |
dc.date.issued | 2019-03 | - |
dc.identifier.citation | SENSORS AND ACTUATORS B-CHEMICAL, v.282, pp.876 - 884 | - |
dc.identifier.issn | 0925-4005 | - |
dc.identifier.uri | http://hdl.handle.net/10203/250079 | - |
dc.description.abstract | Cost-effective fabrication of sensors and detection of ultralow concentrations of toxic gases are important concerns for environmental monitoring. In this study, the reduced graphene oxide (RGO)-loaded ZnFe2O4 nanofibers (ZFO-NFs) were fabricated by facile on-chip electrospinning method and subsequent heat treatment. The multi-porous NFs with single-phase cubic spinel structure and typical spider-net morphology were directly assembled on Pt-interdigitated electrodes. The diameters of the RGO-loaded ZFO-NFs were approximately 50-100 nm with many nanograins. The responses to H2S gas showed a bell-shaped behaviour with respect to RGO contents and annealing temperatures. The optimal values of the RGO contents and the annealing temperatures were found to be about 1.0 wt% and 600 degrees C, respectively. The response of the RGO-loaded ZnFe2O4 NFs to 1 ppm H2S gas was as high as 147 at 350 degrees C while their cross-gas responses to SO2 (10 ppm), NH3 (100 ppm), H-2 ( 250 ppm), C3H6O (1000 ppm), and C2H5OH (1000 ppm) were rather low (1.8 - 5.6). The high sensor response was attributed to formation of a heterojunction between RGO and ZnFe2O4 and due to the fact that NFs consisted of many nanograins which resulted in multi-porous structure and formation of potential barriers at grain boundaries. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Excellent detection of H2S gas at ppb concentrations using ZnFe2O4 nanofibers loaded with reduced graphene oxide | - |
dc.type | Article | - |
dc.identifier.wosid | 000455090000105 | - |
dc.identifier.scopusid | 2-s2.0-85057467577 | - |
dc.type.rims | ART | - |
dc.citation.volume | 282 | - |
dc.citation.beginningpage | 876 | - |
dc.citation.endingpage | 884 | - |
dc.citation.publicationname | SENSORS AND ACTUATORS B-CHEMICAL | - |
dc.identifier.doi | 10.1016/j.snb.2018.11.157 | - |
dc.contributor.localauthor | Park, Inkyu | - |
dc.contributor.nonIdAuthor | Van Hoang, Nguyen | - |
dc.contributor.nonIdAuthor | Hung, Chu Manh | - |
dc.contributor.nonIdAuthor | Hoa, Nguyen Duc | - |
dc.contributor.nonIdAuthor | Van Duy, Nguyen | - |
dc.contributor.nonIdAuthor | Van Hieu, Nguyen | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | RGO | - |
dc.subject.keywordAuthor | ZnFe2O4 | - |
dc.subject.keywordAuthor | Nanofibers | - |
dc.subject.keywordAuthor | Electrospinning | - |
dc.subject.keywordAuthor | H2S | - |
dc.subject.keywordAuthor | Gas sensors | - |
dc.subject.keywordPlus | SENSING PROPERTIES | - |
dc.subject.keywordPlus | ELECTROCHEMICAL PROPERTIES | - |
dc.subject.keywordPlus | COMPOSITE NANOFIBERS | - |
dc.subject.keywordPlus | CHEMICAL-REDUCTION | - |
dc.subject.keywordPlus | HYDROGEN-SULFIDE | - |
dc.subject.keywordPlus | SNO2 NANOFIBERS | - |
dc.subject.keywordPlus | SENSOR | - |
dc.subject.keywordPlus | ACETONE | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | FERRITE | - |
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