One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensing
Listeria monocytogenes (LM) is a pathogenic bacterium which can release 3-hydroxy-2-butanone (3H-2B) as a biological indicator. We report a high-performance 3H-2B gas sensing strategy for the selective detection of LM. This strategy is realized by n-CdO/n-SnO _2 hetero-nanofibers with controllable c...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac9c48 |
| _version_ | 1797746292242251776 |
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| author | Ziqiao Jiang Ce Wang Zhenglong Yang |
| author_facet | Ziqiao Jiang Ce Wang Zhenglong Yang |
| author_sort | Ziqiao Jiang |
| collection | DOAJ |
| description | Listeria monocytogenes (LM) is a pathogenic bacterium which can release 3-hydroxy-2-butanone (3H-2B) as a biological indicator. We report a high-performance 3H-2B gas sensing strategy for the selective detection of LM. This strategy is realized by n-CdO/n-SnO _2 hetero-nanofibers with controllable compositions, synthesized via a facile one-step electrospinning method. The tailored morphologies and microstructures of CdO/SnO _2 nanofibers were systematically characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). With the introduction of CdO into SnO _2 nanofibers, x-ray diffraction (XRD) and x-ray photoelectron spectroscopy (XPS) were performed to investigate the effects of crystal phases and elemental states on the 3H-2B sensing properties. According to the gas sensing results, the variation of Cd/Sn molar ratios has a great influence on the 3H-2B sensing properties of CdO/SnO _2 nanofibers. The maximum response (45) to 5 ppm 3H-2B is found for 5 mol% CdO/SnO _2 nanofibers at 260 °C. Meanwhile, 5 mol% CdO/SnO _2 nanofibers exhibit a short response/recovery time (9 s/5 s), outstanding stability, and discriminative selectivity to 3H-2B. The enhanced sensing performance is mainly attributed to the synergy between the resistance modulation of n-CdO/n-SnO _2 heterojunctions and the doping effect of Cd ^2+ ions. |
| first_indexed | 2024-03-12T15:34:43Z |
| format | Article |
| id | doaj.art-bcd8d4d468cf47fea8bf42279398c267 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:34:43Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-bcd8d4d468cf47fea8bf42279398c2672023-08-09T16:17:43ZengIOP PublishingMaterials Research Express2053-15912022-01-0191111500310.1088/2053-1591/ac9c48One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensingZiqiao Jiang0https://orcid.org/0000-0003-3438-0833Ce Wang1https://orcid.org/0000-0003-3204-5564Zhenglong Yang2School of Chemistry and Materials Science, Ludong University , Yantai 264025, People’s Republic of ChinaAlan G. MacDiarmid Institute, Jilin University , Changchun 130012, People’s Republic of ChinaSchool of Chemistry and Materials Science, Ludong University , Yantai 264025, People’s Republic of ChinaListeria monocytogenes (LM) is a pathogenic bacterium which can release 3-hydroxy-2-butanone (3H-2B) as a biological indicator. We report a high-performance 3H-2B gas sensing strategy for the selective detection of LM. This strategy is realized by n-CdO/n-SnO _2 hetero-nanofibers with controllable compositions, synthesized via a facile one-step electrospinning method. The tailored morphologies and microstructures of CdO/SnO _2 nanofibers were systematically characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). With the introduction of CdO into SnO _2 nanofibers, x-ray diffraction (XRD) and x-ray photoelectron spectroscopy (XPS) were performed to investigate the effects of crystal phases and elemental states on the 3H-2B sensing properties. According to the gas sensing results, the variation of Cd/Sn molar ratios has a great influence on the 3H-2B sensing properties of CdO/SnO _2 nanofibers. The maximum response (45) to 5 ppm 3H-2B is found for 5 mol% CdO/SnO _2 nanofibers at 260 °C. Meanwhile, 5 mol% CdO/SnO _2 nanofibers exhibit a short response/recovery time (9 s/5 s), outstanding stability, and discriminative selectivity to 3H-2B. The enhanced sensing performance is mainly attributed to the synergy between the resistance modulation of n-CdO/n-SnO _2 heterojunctions and the doping effect of Cd ^2+ ions.https://doi.org/10.1088/2053-1591/ac9c48gas sensorsnanofiberselectrospinningheterojunctions |
| spellingShingle | Ziqiao Jiang Ce Wang Zhenglong Yang One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensing Materials Research Express gas sensors nanofibers electrospinning heterojunctions |
| title | One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensing |
| title_full | One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensing |
| title_fullStr | One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensing |
| title_full_unstemmed | One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensing |
| title_short | One-step synthesis of n-CdO/n-SnO2 heterojunction nanofibers for high-performance 3-hydroxy-2-butanone gas sensing |
| title_sort | one step synthesis of n cdo n sno2 heterojunction nanofibers for high performance 3 hydroxy 2 butanone gas sensing |
| topic | gas sensors nanofibers electrospinning heterojunctions |
| url | https://doi.org/10.1088/2053-1591/ac9c48 |
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