超细纤维
二硫化钼
纳米片
材料科学
丙酮
挥发性有机化合物
选择性
纳米技术
沉积(地质)
化学工程
有机化学
化学
复合材料
催化作用
生物
工程类
古生物学
沉积物
作者
Stephanie Hui Kit Yap,Kok Ken Chan,Chen‐Hao Yeh,Yi-Hsin Chien,Ken‐Tye Yong
出处
期刊:ACS applied nano materials
[American Chemical Society]
日期:2021-12-01
卷期号:4 (12): 13440-13449
被引量:9
标识
DOI:10.1021/acsanm.1c02937
摘要
Two-dimensional (2D) transition-metal dichalcogenides such as molybdenum disulfide (MoS2) have received a great deal of attention for high-performance gas sensing applications. Unfortunately, before their translation to commercial use, several scientific problems remain to be solved. The challenges include poor stability in a humid environment, random deposition manner of MoS2 flakes that makes the process unscalable, and incomplete recovery at room temperature. Herein, we report a strategy for the room-temperature volatile organic compound (VOC) sensor using the optical microfiber sensing technology. We demonstrated well-controlled immobilization of MoS2 nanosheets onto the optical sensing region using the optical deposition technique. The experimental results show that the MoS2-functionalized optical microfiber sensor achieves high selectivity to polar aprotic and nonpolar VOCs. The sensor demonstrated high sensitivity of 0.0195, 0.0143, 0.0072, and 0.0058 nm/ppm to acetone, ethyl acetate, cyclohexane, and IPA, respectively. Finally, the repeatability and complete recovery capabilities of the sensor have also been validated in this work.
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