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Comparison of chemiresistive gas sensors performance based on graphene/PPy nanocomposites.
| Target Gas | Sensing Material | Response | LOD |
Response Time | Recovery Time | Nanocomposite Preparation Method | Ref. |
|---|---|---|---|---|---|---|---|
| NO2 | RGO/Polypyrrole (PPy) | 32% (50 ppm) |
- | - | - | In situ polymerization | [135] |
| Humidity | RGO/PPy | 138% | - | 15 s | 20 s | [131] | |
| NH3 | TiO2@PPy–GN | 102.2% (50 ppm) |
1 ppm | 36 s | 16 s | [77] | |
| CO | Na-X/rGO/PPy | 14.9% (5 ppm) |
- | 600 s | 358 s | [134] |
