Exploiting of Green Synthesized Metal Oxide Nanoparticles in the Potentiometric Determination of Metformin Hydrochloride in Pharmaceutical Products

Figure 3

FT-IR spectra of (a) millet seed extract, (b) Al₂O₃NPs and (c) NiONPs measured at the wavenumber range 4000–400 cm⁻¹.

(a)

(b)

(c)