Table 1 Thickness, IEC, proton conductivity, methanol permeability, and membrane selectivity of SA/SGO composite biomembrane with different SGO content
Sample | Thickness (μm) | IEC (meq g−1) | Proton conductivity (σ, mS cm−1) | Methanol permeability (P, × 10−7 cm2 s−1) | Selectivity (SP × 104 S s cm−3) | Reference |
|---|---|---|---|---|---|---|
SA | 198 ± 1 | 0.25 ± 0.03 | 6.36 ± 0.1 | 1.687 ± 0.22 | 3.7678 | Current study |
SA/SGO1 | 200 ± 1 | 0.31 ± 0.05 | 6.63 ± 0.4 | 2.657 ± 0.39 | 2.495 | Current study |
SA/SGO2 | 201 ± 2 | 0.34 ± 0.03 | 7.18 ± 0.5 | 2.453 ± 0.27 | 2.927 | Current study |
SA/SGO3 | 203 ± 1 | 0.38 ± 0.02 | 7.75 ± 0.2 | 2.351 ± 0.23 | 3.296 | Current study |
SA/SGO4 | 200 ± 1 | 0.45 ± 0.05 | 9.30 ± 0.1 | 2.045 ± 0.25 | 4.547 | Current study |
SA/SGO5 | 201 ± 3 | 0.48 ± 0.03 | 10.6 ± 0.1 | 1.738 ± 0.23 | 6.098 | Current study |
SA/SGO6 | 205 ± 2 | 0.56 ± 0.05 | 13.2 ± 0.1 | 1.535 ± 0.24 | 8.555 | Current study |
Nafion 117 | – | 0.86 | 0.098 | 12.3 | 7.967 | [28] |
Nafion 117 | – | – | 0.081 | 20 | 4.05 | [29] |
Nafion 117 | – | – | 0.1056 | 25 | 4.22 | [30] |