Fig. 3

(a) XRD patterns of biogenic FeNPs; inset: algal extract before and after exposure to FeCl3 solution. (b) FTIR spectra of FeNPs and Laurencia papillosa extract.

(a) XRD patterns of biogenic FeNPs; inset: algal extract before and after exposure to FeCl3 solution. (b) FTIR spectra of FeNPs and Laurencia papillosa extract.