Figure 4.
UV-Vis absorption spectra of (A) SNP synthesized using biosurfactant at 90°C. Inset: Visual color change due to SNP synthesis in the mixture of biosurfactant and AgNO3. (B) Effect of biosurfactant concentrations on SNP synthesis at 90°C. (C) Effect of AgNO3 concentration on SNP synthesis at 90°C and (D) Time course of synthesis of SNP at different temperatures.