Table 1.
Zeta potential and particle size distribution of silica nanoparticles. Different letters indicate significant differences (p ≤ 0.05) according to the Duncan test.
| Silica Type | Concentration (mg/L) | Zeta Potential (mV) | pH | Particle Size Distribution (nm) |
|---|---|---|---|---|
| Snowtex-S (small SiNPs) | 10 | −29.3 ± 0.65 a | 9.94 ± 0.04 | 10.23 ± 0.21 a |
| 100 | −31.87 ± 0.97 bc | 9.97 ± 0.04 | 12.33 ± 0.29 b | |
| 1000 | −32.27 ± 0.81 bc | 9.92 ± 0.03 | 14.49 ± 0.16 c | |
| 2000 | −34.47 ± 0.53 d | 9.91 ± 0.05 | 16.78 ± 0.15 d | |
| Snowtex-ZL (large SiNPs) | 10 | −31.17 ± 0.29 b | 9.92 ± 0.05 | 110 ± 1.33 e |
| 100 | −33.37 ± 0.88 cd | 9.95 ± 0.05 | 113.57 ± 0.79 f | |
| 1000 | −36.67 ± 0.33 e | 9.9 ± 0.05 | 116.03 ± 0.54 g | |
| 2000 | −40.4 ± 0.96 f | 9.92 ± 0.06 | 119.87 ± 0.33 h |