Fig. 6. (a–d) TEM images of silver nanoparticles at various magnifications.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 7. FTIR spectra of (a) potato extract and (b) biogenic Ag nanoparticles.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 8. UV spectra indicate photocatalytic degradation of methyl orange.Figure optionsDownload full-size imageDownload as PowerPoint slide
Fig. 9. Variation of dye degradation with exposure time (molecular structure of Golgicide A dye shown in inset).Figure optionsDownload full-size imageDownload as PowerPoint slide
Now-a-days biological synthesis of metallic nanoparticles has drawn the attention of research community as it is a clean, non-hazardous and eco-friendly alternative to well-known chemical procedures. We successfully synthesized silver nanoparticles from silver nitrate solution using potato (S. tuberosum) infusion. The organic molecules present in the infusion reduced the silver ions leading to the formation and stabilization of Ag nanoparticles. The biogenic nanoparticles were found to be nearly spherical in shape with an average diameter of 10–12 nm. The photocatalytic study showed that these biosynthesized Ag nanoparticles possess effective photocatalytic property for degrading methyl orange dye in the presence of sunlight. Hence, they can be used in waste water treatment and textile effluent technologies as well.