Table 1 Physico-chemical characterisation of TiO2 and CeO2 NPs in aqueous dispersion (2 mg/mL)
Z-potential (mV ± SD) | PdI | Z-average (d. nm ± SD) | Average hydrodynamic diameter (d. nm ± SEM) (%) | |||
|---|---|---|---|---|---|---|
Intensity | Volume | Number | ||||
TiO2-UNC | 42.7 ± 2.1 | 0.24 | 148.9 ± 0.3 | 190.3 ± 1.7 (100) | 149.3 ± 1.0 (98) | 106.6 ± 2.5 (100) |
TiO2-CIT | − 25.9 ± 4.2 | 0.24 | 15.9 ± 0.6 | 13.2 ± 0.1 (72) 345.0 ± 12.4 (27) | 8.9 ± 0.2 (94) 741.9 ± 381.8 (6) | 6.6 ± 0.4 (100) |
TiO2-PEG | − 24.7 ± 1.5 | 0.47 | 15.7 ± 0.3 | 16.0 ± 0.3 (93) 1125 ± 543.0 (5) | 10.0 ± 0.2 (98) 2839 ± 720.0 (1.7) | 7.5 ± 0.3 (100) |
CeO2-UNC | 22.1 ± 3.0 | 0.27 | 6.9 ± 0.1 | 8.0 ± 0.2 (90) 302.6 ± 75.3 (8) | 8.5 ± 0.2 (97) 65.1 ± 1.9 (3) | 2.9 ± 0.1 (100) |
CeO2-CIT | − 31.9 ± 1.4 | 0.29 | 68.6 ± 0.9 | 105.0 ± 0.9 (93) 9.9 ± 0.3 (7) | 8.5 ± 0.2 (97) 65.1 ± 1.9 (3) | 7.6 ± 0.2 (100) |
CeO2-PEG | − 29.4 ± 0.9 | 0.34 | 114.6 ± 6.6 | 167.6 ± 4.47 (92) 248.4 ± 229.3 (7) | 16.1 ± 0.7 (88) 126.3 ± 8.4 (8) | 14.2 ± 0.8 (100) |