Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 259, Issue -, Pages 789-796Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2017.12.070
Keywords
Ultra-thin WS2 nanosheet; Hydrothermal method; Calcination; Response; Room temperature
Funding
- National Natural Science Foundation of China [11504331]
- China Postdoctoral Science Foundation [2015M582196, 2015M582193, 2015M582194]
- Educational Department of Henan Province [15A430048]
- Outstanding Young Talent Research Fund of Zhengzhou University [1521317005, 1521317001]
- Startup Research Fund of Zhengzhou University [1411317010]
Ask authors/readers for more resources
Ultra-thin WS2 nanosheets with a thickness of about 5 nm were synthesized by an economical hydrothermal method and the following calcination process. A three dimensional wall-like structure was formed by the interconnecting WS2 nanosheets. The growth mechanism of as-prepared WS2 nanosheets was discussed, and it was deduced that mesolamellar tungsten sulfide (WS-L) with intercalated CTA(+) cations was formed by co-condensation reaction of WS42- and CTAB in the hydrothermal process. The resistive gas sensors based on as-prepared WS2 nanosheets showed a p-type character, achieved a superior response of 9.3% to 0.1 ppm NO2 gas at room temperature (25 degrees C) and a good stability in low and moderate humidity. The excellent NO2 sensing properties can be attributed to the ultra-thin nanostructure of the WS2 nanosheets. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available