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

Wei Shan; Zhengqian Fu; Mingsheng Ma; Zhifu Liu; Zhenggang Xue; Jiaqiang Xu; Faqiang Zhang; Yongxiang Li

doi:10.3390/s19112581

Sensors (Jun 2019)

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

Wei Shan,
Zhengqian Fu,
Mingsheng Ma,
Zhifu Liu,
Zhenggang Xue,
Jiaqiang Xu,
Faqiang Zhang,
Yongxiang Li

Affiliations

Wei Shan: CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Zhengqian Fu: CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Mingsheng Ma: CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Zhifu Liu: CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Zhenggang Xue: Department of Chemistry, Shanghai University, Shanghai 200444, China
Jiaqiang Xu: Department of Chemistry, Shanghai University, Shanghai 200444, China
Faqiang Zhang: CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
Yongxiang Li: CAS Key Lab of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

DOI: https://doi.org/10.3390/s19112581
Journal volume & issue: Vol. 19, no. 11
p. 2581

Abstract

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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.

Published in Sensors

ISSN: 1424-8220 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology
Website: http://www.mdpi.com/journal/sensors

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