Fig. 8

FTIR spectrum of biogenic silver nanoparticles, displaying characteristic absorption bands. Peaks around 3200–2800 cm⁻¹ correspond to O-H and C-H stretching vibrations, while bands near 1625 cm⁻¹ and 1541 cm⁻¹ indicate amide bonds. The peaks in the fingerprint region (1242–600 cm⁻¹) suggest the presence of sulfhydryl, aromatic, and aliphatic functional groups, confirming biomolecule capping on the nanoparticles