Layer-by-layer nanocomposites consisting of Co3O4 and reduced graphene (rGO) nanosheets for high selectivity ethanol gas sensors
Abstract
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 °C. Nanocomposite with 15 wt% of rGO exhibited the best sensitivity. The gas sensing mechanism of the composite to ethanol is discussed in detail.
- Publication:
-
Applied Surface Science
- Pub Date:
- June 2019
- DOI:
- 10.1016/j.apsusc.2019.02.148
- Bibcode:
- 2019ApSS..479..601T
- Keywords:
-
- Reduced graphene composites;
- Layer-by-layer;
- Regulate selective;
- Gas sensor