利用过渡金属二硫化物和ZnO纳米颗粒之间的异质结提高NO2传感器的回收率

IF 4.7 Q2 NANOSCIENCE & NANOTECHNOLOGY Micro and Nano Systems Letters Pub Date : 2023-09-11 DOI:10.1186/s40486-023-00171-0
Leilei Wang, Jungwook Choi
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引用次数: 0

摘要

气体传感器的稳定回收率是评价其性能的重要指标。迄今为止,使用外部光源和/或提高工作温度在提高气体传感器的回收率方面是有效的。通过在二维过渡金属二硫化物纳米片和零维ZnO纳米片之间形成异质结,提高了NO2传感器的回收率。扫描电镜和拉曼光谱显示ZnO纳米粒子成功沉积在MoS2和WSe2纳米片上。在100℃下,对10ppm NO2气体的传感响应表明,ZnO与MoS2或WSe2形成的异质结成功地将传感器的回收率分别提高了11.87%和19.44%,而灵敏度保持不变。该方法有助于提高气体传感器的性能。
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Improved recovery of NO2 sensors using heterojunctions between transition metal dichalcogenides and ZnO nanoparticles

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.

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来源期刊
Micro and Nano Systems Letters
Micro and Nano Systems Letters Engineering-Biomedical Engineering
CiteScore
10.60
自引率
5.60%
发文量
16
审稿时长
13 weeks
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