Fig.1

(A). FESEM image of Fe3O4 nanoparticles synthesized by strain ASFS1;(B ). Particle size distribution of the biogenic magnetite nanoparticles obtained from FESEM images.

(A). FESEM image of Fe3O4 nanoparticles synthesized by strain ASFS1;(B ). Particle size distribution of the biogenic magnetite nanoparticles obtained from FESEM images.