SnS2 Nanoplates: Synthesis and NO2 Sensing Property

doi:10.15541/jim20190133

Abstract

Abstract:

Two-dimensional (2D) metal sulfide materials are ideal for use in gas sensing applications due to their low electronic noise and a large specific surface area, and the research on highly efficient and morphologically controllable methods for preparing two-dimensional metal sulfide materials is necessary. Highly crystalline 2D hexagonal SnS₂ nanoplates (NPs) with different morphologies were prepared by high temperature chemical bath method. SnS₂ NPs were characterized by different techniques, and their gas sensing properties were further investigated. The results show that when the molar ratio of oleic acid (OAc) to oleylamine (OAm) is 1 : 1, the shape of typical SnS₂ NPs is a uniform hexagon, with a diameter of about 150 nm and a thickness of 4-6 nm. The gas sensing test shows typical SnS₂ NPs are responsive to NO₂ gas, and the sensing process is reversible and selective. The optimal operating temperature is 130 ℃, and the response and recovery time are 98 and 680 s, respectively.

Key words: NO₂ gas, 2D materials, SnS₂, chemical bath synthesis, gas sensing detection

CLC Number:

TQ174

SHAN Wei,FU Zhengqian,ZHANG Faqiang,MA Mingsheng,LIU Zhifu,LI Yongxiang. SnS₂ Nanoplates: Synthesis and NO₂ Sensing Property[J]. Journal of Inorganic Materials, 2020, 35(4): 497-504.

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References 27

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SnS₂ Nanoplates: Synthesis and NO₂ Sensing Property

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