Table 1.
Gas sensitivities of 3D graphene toward NO2.
| 3D Graphene | Temp. (°C) |
CNO2 (ppm) |
Response | S3D (ppm−1) |
S3D/S2D | Recovery Time (s) | LOD (ppb) | Year | Ref. |
|---|---|---|---|---|---|---|---|---|---|
| Superhydrophobic 3D RGO | 113 | 1 | ∆G/G0 = 23.5% | 23.5% | - | 169 | 9.1 | 2018 | [82] |
| 3D S-RGOH | RT | 2 | ∆R/R0 = 22.5% | 8.7% | 118.6 | 11 | 4.1 | 2017 | [83] |
| 3D RGO-SnO2 | 55 | 100 | ∆R/R0 = 6.5% | 0.1% | - | 500 | 2000 | 2015 | [84] |
| 3D SnO2/RGOH | RT | 5 | ∆G/G0 = 32% | 4.3% | 62.9 | 260 | 2.8 | 2020 | [85] |
| 3D MoS2/RGO | 80 | 10 | ∆I/I0 = 2483% | 248% | >250 | 30 | 27.9 | 2019 | [52] |
| 3D SnS2/RGO | RT | 8 | ∆G/G0 = 49.8% | 6.1% | 22.6 | 76 | 8.7 | 2020 | [86] |
| 3D N-RGOH | RT | 0.8 | ∆G/G0 = 11.7% | 8.7% | 18 | 10 | 14 | 2019 | [87] |
| 3D B-RGOH | RT | 0.8 | ∆G/G0 = 25.3% | 20% | 38.9 | 90 | 9 | 2019 | [87] |
| 3D RGO/Eu(TPyP) (Pc) | RT | 20 | ∆I/I0 = 12% | 0.6% | 2 | 828 | 80 | 2020 | [88] |
| VC-Funct. RGOH | RT | 10 | ∆G/G0 = 36.3% | 3.6% | 10 | 300 | 100 | 2020 | [89] |
Note: The response, in the form of relative change of resistance (∆R/R0) or conductance (∆G/G0), was tested at a set temperature and a set concentration of NO2 (CNO2). S3D and S2D are the sensitivities (responses per ppm) of 3D and 2D graphene, respectively. LOD = limit of detection.