Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles
Abstract The stable recovery of gas sensors is an important indicator for evaluating their performance. Hitherto, the use of external light sources and/or an increase in the operating temperature has been effective in improving the recovery rate of gas sensors. Herein, heterojunctions were formed be...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-09-01
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| Series: | Micro and Nano Systems Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40486-023-00171-0 |
| _version_ | 1797557291993530368 |
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| author | Leilei Wang Jungwook Choi |
| author_facet | Leilei Wang Jungwook Choi |
| author_sort | Leilei Wang |
| collection | DOAJ |
| description | Abstract The stable recovery of gas sensors is an important indicator for evaluating their performance. Hitherto, the use of external light sources and/or an increase in the operating temperature has been effective in improving the recovery rate of gas sensors. Herein, heterojunctions were formed between the two-dimensional transition metal dichalcogenide nanosheets and zero-dimensional ZnO nanoparticles to improve the recovery rate of a NO2 sensor. Scanning electron microscopy and Raman spectroscopy suggested a successful deposition of ZnO nanoparticles onto the MoS2 and WSe2 nanosheets. The sensing response to 10 ppm NO2 gas at 100 °C indicated that the heterojunction formed by ZnO and MoS2 or WSe2 successfully improved the recovery rate of the sensor by 11.87% and 19.44%, respectively, whereas the sensitivity remained constant. The proposed approach contributes to improving the performance of gas sensors. |
| first_indexed | 2024-03-10T17:15:08Z |
| format | Article |
| id | doaj.art-48b81fb958b74ed0be7ac3307008fd96 |
| institution | Directory Open Access Journal |
| issn | 2213-9621 |
| language | English |
| last_indexed | 2024-03-10T17:15:08Z |
| publishDate | 2023-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Micro and Nano Systems Letters |
| spelling | doaj.art-48b81fb958b74ed0be7ac3307008fd962023-11-20T10:30:43ZengSpringerOpenMicro and Nano Systems Letters2213-96212023-09-011111710.1186/s40486-023-00171-0Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticlesLeilei Wang0Jungwook Choi1School of Mechanical Engineering, Chung-Ang UniversitySchool of Mechanical Engineering, Chung-Ang UniversityAbstract The stable recovery of gas sensors is an important indicator for evaluating their performance. Hitherto, the use of external light sources and/or an increase in the operating temperature has been effective in improving the recovery rate of gas sensors. Herein, heterojunctions were formed between the two-dimensional transition metal dichalcogenide nanosheets and zero-dimensional ZnO nanoparticles to improve the recovery rate of a NO2 sensor. Scanning electron microscopy and Raman spectroscopy suggested a successful deposition of ZnO nanoparticles onto the MoS2 and WSe2 nanosheets. The sensing response to 10 ppm NO2 gas at 100 °C indicated that the heterojunction formed by ZnO and MoS2 or WSe2 successfully improved the recovery rate of the sensor by 11.87% and 19.44%, respectively, whereas the sensitivity remained constant. The proposed approach contributes to improving the performance of gas sensors.https://doi.org/10.1186/s40486-023-00171-0HeterojunctionMolybdenum disulfideTungsten diselenideGas sensingRecovery |
| spellingShingle | Leilei Wang Jungwook Choi Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles Micro and Nano Systems Letters Heterojunction Molybdenum disulfide Tungsten diselenide Gas sensing Recovery |
| title | Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles |
| title_full | Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles |
| title_fullStr | Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles |
| title_full_unstemmed | Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles |
| title_short | Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles |
| title_sort | improved recovery of no2 sensors using heterojunctions between transition metal dichalcogenides and zno nanoparticles |
| topic | Heterojunction Molybdenum disulfide Tungsten diselenide Gas sensing Recovery |
| url | https://doi.org/10.1186/s40486-023-00171-0 |
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