Table 1 Physicochemical characterization of AgNPs in various media

Diameter measured by TEM (nm) ^c

19.4 ± 3.5 ^a

34.6 ± 14.4 ^a

21.0 ± 5.0 ^a

–

19.7 ± 3.5 ^a

19.8 ± 4.3 ^b

23.5 ± 4.7 ^b

22.3 ± 5.9 ^b

–

19.8 ± 4.2 ^b

Hydrodynamic diameter (nm)

58.1 ± 0.3 ^a

96.6 ± 1.6 ^a

71.1 ± 3.1 ^a

113.2 ± 11.6 ^a

103.6 ± 7.1 ^a

60.2 ± 0.4 ^b

67.6 ± 3.2 ^b

96.9 ± 4.2 ^b

402.1 ± 61.7 ^b

82.6 ± 0.4 ^b

Zeta-potential (mV)

−1.5 ± 0.4 ^a

− 17.4 ± 0.3 ^a

− 11.9 ± 1.7 ^a

− 11.8 ± 0.8 ^a

−14.5 ± 0.5 ^a

− 1.5 ± 0.6 ^b

−27.9 ± 0.8 ^b

−14.9 ± 1.6 ^b

−13.0 ± 0.3 ^b

−16.2 ± 0.2 ^b

Polydispersity index (PDI)

0.15 ± 0.01 ^a

0.46 ± 0.03 ^a

0.45 ± 0.07 ^a

0.51 ± 0.09 ^a

0.40 ± 0.03 ^a

0.14 ± 0.00 ^b

0.41 ± 0.01 ^b

0.49 ± 0.10 ^b

0.76 ± 0.13 ^b

0.28 ± 0.01 ^b

λ_max (nm)

417 ^a

415 ^a

415 ^a

416 ^a

418 ^a

417 ^b

403 ^b

408 ^b

420 ^b

423 ^b