Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor
In this work, the application of carbon quantum dots as known as CQDs for ethanol detection is pioneered, and a multi-fold improvement in gas sensor performance is achieved through the unique electron transport mechanism of carbon quantum dots. The lychee-like SnO2 hollow microspheres and CQDs are p...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Sensors and Actuators Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666053923000206 |
| _version_ | 1797802700432211968 |
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| author | Zhenyu Yuan Yongchen Sui Meige Ding Hongmin Zhu |
| author_facet | Zhenyu Yuan Yongchen Sui Meige Ding Hongmin Zhu |
| author_sort | Zhenyu Yuan |
| collection | DOAJ |
| description | In this work, the application of carbon quantum dots as known as CQDs for ethanol detection is pioneered, and a multi-fold improvement in gas sensor performance is achieved through the unique electron transport mechanism of carbon quantum dots. The lychee-like SnO2 hollow microspheres and CQDs are prepared by a solvent heat method. The composites are assembled by rapid grinding, ultrasonication, and stirring. The minimum detection limit is 500 ppb. The response/recovery time of the best mass percentage composite is 9 s/16 s to ethanol at 100 ppm with an optimum working temperature of 216℃ in the target gas-sensitive test. Such a fast response speed improvement is ascribed to the excellent electron transfer efficiency of the 5 nm diameter carbon quantum dots (CQDs). |
| first_indexed | 2024-03-13T05:09:40Z |
| format | Article |
| id | doaj.art-26a1e94cd3374bf79544bf14526a025c |
| institution | Directory Open Access Journal |
| issn | 2666-0539 |
| language | English |
| last_indexed | 2024-03-13T05:09:40Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sensors and Actuators Reports |
| spelling | doaj.art-26a1e94cd3374bf79544bf14526a025c2023-06-16T05:11:44ZengElsevierSensors and Actuators Reports2666-05392023-06-015100157Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensorZhenyu Yuan0Yongchen Sui1Meige Ding2Hongmin Zhu3Corresponding author.; College of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaCollege of Information Science and Engineering, Northeastern University, Shenyang 110819, ChinaIn this work, the application of carbon quantum dots as known as CQDs for ethanol detection is pioneered, and a multi-fold improvement in gas sensor performance is achieved through the unique electron transport mechanism of carbon quantum dots. The lychee-like SnO2 hollow microspheres and CQDs are prepared by a solvent heat method. The composites are assembled by rapid grinding, ultrasonication, and stirring. The minimum detection limit is 500 ppb. The response/recovery time of the best mass percentage composite is 9 s/16 s to ethanol at 100 ppm with an optimum working temperature of 216℃ in the target gas-sensitive test. Such a fast response speed improvement is ascribed to the excellent electron transfer efficiency of the 5 nm diameter carbon quantum dots (CQDs).http://www.sciencedirect.com/science/article/pii/S2666053923000206CqdsSno2Hollow microspheresΠ-states |
| spellingShingle | Zhenyu Yuan Yongchen Sui Meige Ding Hongmin Zhu Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor Sensors and Actuators Reports Cqds Sno2 Hollow microspheres Π-states |
| title | Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor |
| title_full | Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor |
| title_fullStr | Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor |
| title_full_unstemmed | Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor |
| title_short | Lychee-like SnO2 hollow microspheres sensitized by carbon quantum dots for high-sensitivity ethanol sensor |
| title_sort | lychee like sno2 hollow microspheres sensitized by carbon quantum dots for high sensitivity ethanol sensor |
| topic | Cqds Sno2 Hollow microspheres Π-states |
| url | http://www.sciencedirect.com/science/article/pii/S2666053923000206 |
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