Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 244, Issue -, Pages 67-76Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.12.125
Keywords
SnS2 nanosheets; SnO2/SnS2 heterojucntion; Gas sensors; NO2
Funding
- National Natural Science Foundation of China [61474012, 61611130065, 61574025, 61131004]
- Foundation of Key Lab. For Micro/Nano Technology and System of Liaoning Province [20140404]
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SnS2 nanosheets decorated with SnO2 nanocomposites have been successfully prepared by in-situ high-temperature oxidizing pristine SnS2 in air at 300 C. The formed SnO2/SnS2 heterojunction based chemiresistive gas sensor exhibits an excellent sensitivity and selectivity to different concentrations of NO2 from 1 ppm to 8 ppm at 80 C. The higher response of the as-fabricated SnO2/SnS2 heterojunction based sensor to NO2 compared with that of the pure SnS2 based one could be attributed to the extra charge transfer between SnO2/SnS2 interfaces. (C) 2016 Elsevier B.V. All rights reserved.
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