2.6.1. FTIR

The functional group of the biosynthesized AgNPs was planned by FTIR as described by [14]. Briefly, 1 mg (freeze-dried) of AgNPs powders were blended with KBr (300 mg) and the FTIR were measured with an AVATAR 370 FTIR spectrometer (Thermo Nicolet, MA, USA) at a spectral range of 500–4000 cm.
