Table 1.
Test Material Information.
| Particles | Size Sigma-Aldrich | Purity Sigma-Aldrich | Zeta Potential (mV) | pH | Description (TEM) |
|---|---|---|---|---|---|
| nTiO2 | 21 nm | 99.5% | 11.6 ± 1.1 | 7.13 ± 0.03 | Spherical, present in the form of 60–120 nm irregular aggregate in water solution |
| nSiO2 | 5–15 nm (TEM) | 99.5% | −17.6 ± 1.0 | 6.67 ± 0.03 | Spherical, about 5–15 nm, usually gathered into 90 ± 30 nm irregular aggregate |
| nCeO2 | <25 nm (BET) | 99% | 35.1 ± 0.7 | 6.71 ± 0.04 | Spherical, with smooth edge and inhomogenous size, less than 50 nm |
| nFe3O4 | 50–100 nm (TEM) | 97% | 9.12 ± 0.47 | 7.08 ± 0.03 | Keen-edged diamond or square, with the inhomogenous size of 50–100 nm |
| nAl2O3 | 13 nm (TEM) | - | 29.5 ± 0.6 | 7.17 ± 0.02 | Spherical, with the average size of 15 nm, easy to aggregate |
| nZnO | <50 nm (BET) | 97% | −7.63 ± 0.37 | 7.14 ± 0.03 | Clavate or irregular spherical, with inhomogenous size distribution, less than 50 nm |
| nCuO | <50 nm (TEM) | 97% | 20.6 ± 0.6 | 6.36 ± 0.02 | Elliptic or spherical, with the size range of 40–80 nm |
| ZnO MPs | <5 µm | 99.9% | 10.4 ± 1.3 | 6.95 ± 0.03 | Irregular shapes |