Journal
APPLIED SURFACE SCIENCE
Volume 479, Issue -, Pages 601-607Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2019.02.148
Keywords
Reduced graphene composites; Layer-by-layer; Regulate selective; Gas sensor
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Funding
- Natural Science Foundation of China [61604116, 61603086]
- Heilongjiang Province Science Foundation [UNPYSCT-2016180, A201104]
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Layer-by-layer nanocomposites consisting of Co3O4 and reduced graphene (rGO) nanosheets were synthesized by a simple hydrothermal process with the annealing step. We investigated their gas sensing performances towards several volatile organic compounds (VOCs). Composites showed high response, excellent circularity and long-term stability as ethanol sensors operating at 200 degrees C. Nanocomposite with 15 wt% of rGO exhibited the best sensitivity. The gas sensing mechanism of the composite to ethanol is discussed in detail.
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