Table 1.
Comparison of the acetone sensing properties of MOX-based sensors.
| Materials | Temperature (°C) | RH (%) | Detection range (ppm) | Response (Ra/Rg) | t res/trec (s/s) | Ref. |
|---|---|---|---|---|---|---|
| α-Fe2O3/SnO2 HNAs | 340 | 20 | 0.4–20 | 5.37@1 ppm | 14/70 | This work |
| Pt-SnO2 fibers | 300 | 80 | 0.12–3 | 3.47@3 ppm | 15/6 | 35 |
| ZnO@ZIF-CoZn nanowire arrays | 260 | 0–90 | 10–2000 | 2.3@10 ppm | 43/61 | 36 |
| PdO-Co3O4 hollow nanocages | 350 | 90 | 0.4–5 | 1.52∗@1 ppm | — | 37 |
| NiO/ZnO hollow spheres | 275 | 30 | 0.8–100 | 1.6@0.8 ppm | 1/20 | 38 |
| ZnO/CuO inverse opals | 310 | 93.5 | 0.2–50 | 1.8@1 ppm | 7/13 | 11 |
∗ R g/Ra.