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DLS analysis of the average size of Ag-NPs synthesised using 1 mM AgNO3 reduced with aqueous extracts of flowers of Tanacetum vulgare L. in a volume ratio of 9:1 (a); a plot of the intensity autocorrelation coefficients as a function of correlation time (b); the average size of Ag-NPs after 100-fold dilution of the colloidal mixture (c); and ζ-potential distribution (d).
