Table 1.
Size distribution, polydispersity index (PI) and surface charge of NiO and CoO NPs estimated from aqueous suspensions. Data expressed as mean, n = 3, where relative standard deviation was < 10%.
Nanoparticles | TEM/nm | DLS/nm | PI | Zeta value/mV |
---|---|---|---|---|
NiO (40 – 60nm) | 20–90 | 1517 | 0.59 | −10.1 |
CoO (< 100nm) | 40–120 | 1168 | 0.24 | −3.57 |