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Indexed by:期刊论文

Date of Publication:2017-06-01

Journal:SENSORS AND ACTUATORS B-CHEMICAL

Included Journals:SCIE、EI

Volume:244

Page Number:67-76

ISSN No.:0925-4005

Key Words:SnS2 nanosheets; SnO2/SnS2 heterojucntion; Gas sensors; NO2

Abstract: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.