This indicates that the FePM remains the third in controlling the size of the iron oxide (Fe2O3) nanoparticle. Further, indexing of the XRD (Fig. .0) peaks (2θ = 10-70 degrees) and the Raman shift modes (280-620 cm -1 ) in (Fig. & Table ) differentiated that, unlike the other four cases, FeBH a mixture of γ-Fe2O3 (maghemite) and (magnetite) (Fe3O4). Interestingly, except in the case of base hydrolysis (FeBH), the indexing of diffraction pattern with the reference JCPDS card indicated the predominance α-Fe2O3 form along with the impurities of other forms (γ, and ε) of iron oxides. Also, the relative intensity ratio of the most intense XRD peaks corresponding to different miller indices (hkl) values (Fig. .0&2.1), indicated the morphological differences in the iron oxide nanoparticles. Fig. (a&b) Fourier transforms Infrared spectroscopy (FTIR) spectrum for various iron oxide nanoparticle samples from FeAH to FePM, including additive biogenic extract LnPM, showing characteristic variation in stretching frequencies for metal oxide bond, ligand residues,(b); magnified region (1500-500 cm -1 ) for characteristic metal oxide stretching frequencies and shape anisotropy i.e. aspect ratio (a/b≥ 1).