. 2023 Jun 5;6(6):2266–2276. doi: 10.1021/acsabm.3c00122

Table 2. Zeta Potential, Hydrodynamic Diameter (Mean Diameter), and Polydispersity Index of Fe₃O₄, SiO₂@Fe₃O₄, and Ag@SiO₂@Fe₃O₄ NPs^a.

sample	zeta potential (mV)	hydrodynamic diameter (nm)	polydispersity index (PDI)
Fe₃O₄	–18	1200	0.215
SiO₂@Fe₃O₄	–27	700	0.173
Ag@SiO₂@Fe₃O₄	–34	400	0.156

Polydispersity index values of around 0.200 indicate the monodispersity.

Table 2. Zeta Potential, Hydrodynamic Diameter (Mean Diameter), and Polydispersity Index of Fe3O4, SiO2@Fe3O4, and Ag@SiO2@Fe3O4 NPsa.