AIP Advances (Jul 2021)

Synthesis of SnO2-nanoparticle-decorated SnSe nanosheets and their gas-sensing properties

  • Yuanyuan Wang,
  • Nan Li,
  • Haixin Zhao,
  • Xin Liu,
  • Xiaotian Li

DOI
https://doi.org/10.1063/5.0057064
Journal volume & issue
Vol. 11, no. 7
pp. 075022 – 075022-6

Abstract

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Selectivity is still a major problem in gas sensors. In this study, we fabricated a novel sensor material, tin oxide (SnO2) nanoparticle decorated tin selenide (SnSe) nanosheets (SnO2/SnSe), via a simple solvothermal method. SnO2 nanoparticles of size ∼10 nm were anchored on the surface of SnSe nanosheets. The gas-sensing performances of SnO2/SnSe composites calcined at different temperatures were compared. Methylbenzene-sensing performance analysis performed at different temperatures and concentrations showed that SnO2/SnSe composites exhibited preferable sensitivity, excellent selectivity, and a good response rate. The improved sensing properties, especially the selectivity, are attributed to the appropriate heterojunction of SnO2 nanoparticle decorated SnSe nanosheets.