Microbial-Physical Synthesis of Fe and Fe₃O₄ Magnetic Nanoparticles Using Aspergillus niger YESM1 and Supercritical Condition of Ethanol

Figure 3

XRD analysis of nanoparticles formed using Aspergillus niger cells: (a) FeS and (b) Fe₂O₃ nanoparticles.

(a) FeS

(b) Fe₂O₃