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| Membrane | Material volume (mm3) | Material volume percentage (%) | Membrane pore size (nm) | Membrane porosity (%) |
|---|---|---|---|---|
| WO3 NW–cellulose | 2.68 | 43.8 | 82.45 | 41.36 |
| WO3 NW–Fe2O3–cellulose | 2.42 | 47.5 | 79.5 | 55.48 |
| WO3 NW–CuO–cellulose | 1.12 | 36.7 | 84.27 | 53.26 |
