Figure 2.

UV–VIS spectra of the biosynthesized silver nanoparticles. UV–VIS spectra of silver nanoparticles synthesized by extracellular agents of Bacillus pumilus, B. persicus, and B. licheniformis, were recorded as a function of the reaction time. The peak at 425 nm corresponds to the surface plasmon resonance of silver nanoparticles.