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Open AccessArticle

Facile Chemical Bath Synthesis of SnS Nanosheets and Their Ethanol Sensing Properties

1
CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
2
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
3
Department of Chemistry, Shanghai University, Shanghai 200444, China
*
Authors to whom correspondence should be addressed.
Sensors 2019, 19(11), 2581; https://doi.org/10.3390/s19112581
Received: 6 May 2019 / Revised: 24 May 2019 / Accepted: 27 May 2019 / Published: 6 June 2019
(This article belongs to the Special Issue Smart Structures and Materials for Sensor Applications)
Tin(II) monosulfide (SnS) nanosheets were synthesized using SnCl4•5H2O and S powders as raw materials in the presence of H2O via a facile chemical bath method. Orthorhombic phase SnS nanosheets with a thickness of ~100 nm and lateral dimensions of 2~10 μm were obtained by controlling the synthesis parameters. The formation of a SnO2 intermediate is key to the valence reduction of Sn ions (from IV to II) and the formation of SnS. The gas sensors fabricated from SnS nanosheets exhibited an excellent response of 14.86 to 100 ppm ethanol vapor when operating at 160 °C, as well as fast response and recovery times of 23 s and 26 s, respectively. The sensors showed excellent selectivity for the detection of ethanol over acetone, methanol, and ammonia gases, which indicates the SnS nanosheets are promising for high-performance ethanol gas sensing applications. View Full-Text
Keywords: gas sensors; SnS nanosheets; chemical bath synthesis; oleylamine; ethanol sensing gas sensors; SnS nanosheets; chemical bath synthesis; oleylamine; ethanol sensing
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MDPI and ACS Style

Shan, W.; Fu, Z.; Ma, M.; Liu, Z.; Xue, Z.; Xu, J.; Zhang, F.; Li, Y. Facile Chemical Bath Synthesis of SnS Nanosheets and Their Ethanol Sensing Properties. Sensors 2019, 19, 2581.

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