Fig. 4

(a) Dynamic light scattering (DLS) analysis showing the size distribution of Ag-NPs. (b) Zeta-potential measurements indicating the surface charge and colloidal stability of the Ag-NPs.

(a) Dynamic light scattering (DLS) analysis showing the size distribution of Ag-NPs. (b) Zeta-potential measurements indicating the surface charge and colloidal stability of the Ag-NPs.