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论文类型：期刊论文

发表时间：2017-06-01

发表刊物：SENSORS AND ACTUATORS B-CHEMICAL

收录刊物：EI、SCIE

卷号：244

页面范围：67-76

ISSN号：0925-4005

关键字：SnS2 nanosheets; SnO2/SnS2 heterojucntion; Gas sensors; NO2

摘要：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.