期刊
MATERIALS LETTERS
卷 264, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.matlet.2020.127385
关键词
2D layered MoS2; HCHO gas sensing; Selectivity; Stability; Potential barrier height
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [2019R1D1A3A03103662]
- National Research Foundation of Korea [2019R1D1A3A03103662] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Here, we report the two-dimensional layered MoS2 nanostructure-based gas sensor synthesized by a solvothermal method for formaldehyde (HCHO) gas sensing applications. The MoS2 sensor demonstrates a high sensitivity (86.9%), and prompt response (response time 1.4 s, recovery time 2.9 s) to HCHO at 130 degrees C for 100 ppm. Further, MoS2 based gas sensor illustrates high selectivity to HCHO (86.9%) as compared with other interfering gases such as butanol (7.8%), methanol (8.6%), ethanol (11.3%) and propanol (16.9%) at 130 degrees C for 100 ppm. It also depicts the excellent stability (94.8%) as its gas sensitivity decreased from 86.9% to 82.5% after thirty days of its use with the interval of five days at 130 degrees C for 100 ppm. (C) 2020 Elsevier B.V. All rights reserved.
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