Constructed heterostructured SnS@MoO3 hollow nanotubes and detected sensing properties towards TEA

• Published in: Vacuum 2021-02, Vol.184, p.109939, Article 109939
• Main Authors: Ma, Y.T., Ma, S.Y., Tang, J., Wu, Z.G., Shi, J., Zhao, Y., Wang, Y., Pei, S.T.
• Format: Article
• Language: English
• Subjects: MoO3 nanorods; Semiconductors; Sensors; SnS@MoO3 hollow nanotubes; TEA
• ISSN: 0042-207X; 1879-2715
• DOI: 10.1016/j.vacuum.2020.109939

To overcome the obstacle of triangular prism-like MoO3 nanorods (MoO3) gas sensor including low response, poor selectivity and a heavy influence of humidity to Triethylamine (TEA), heterostructured tin sulfide (SnS) composited with MoO3 hollow nanotubes (SnS@MoO3) were synthesised by a facilely hydrothermal method. Its morphology and structure were charactered through different technologies. The result indicated that the sensor based on SnS@MoO3 exhibited higher response (73.46%), shorter response/recovery time (8.1/4.5 s), excellently selectivity and anti-humidity properties than MoO3 to 50 ppm TEA at 250 °C. Thus, the SnS@MoO3 is a promising material for detecting TEA. •Heterostructured SnS@MoO3 hollow nanotubes were synthesised by hydrothermal method.•The sensors of SnS@MoO3 has short response/recovery time (8.1/4.5 s) to TEA.•The response of SnS@MoO3 sensor reaches 73.46% to 50 ppm TEA at 250 °C.•The SnS@MoO3 sensor displays excellently selectivity and anti-humidity properties to TEA.