Table 1 Hydrodynamic mean diameter and PDI value GNPs in different volumetric percentage of ethanol obtained by DLS method and calculated polarity index of various ratio of organic solvent-water medium
Solvent-aqueous volume percentage | Hydrodynamic mean diameter of GNPs (nm) | Poly dispersity index (PDI) | Polarity index of solvent mixture |
|---|---|---|---|
20% ethanol–water solution | 22 ± 4.6 | 0.40 | 8.24 |
50% ethanol–water solution | 28 ± 10.5 | 0.12 | 7.10 |
80% ethanol–water solution | 219 ± 84.9 | 0.17 | 5.96 |
100% ethanol | 154 ± 56.8 | 0.15 | 5.20 |