The electrostatic stabilization of various AgNPs was estimated by measuring their zeta potential values (ESI, Table S5†).
The zeta potential value was found to be in the range from 26.8 to -53.1 mV for particles with an average size between 5 and 100 nm. This can be attributed to extremely high surface energies of nanoparticle suspensions. The stability of all AgNPs
was tested afier repeated intervals (1, 3 and 6 months) using UVVis and zeta potential measurements and no significant shift