Figure 2

Characterization and localization of E. cloacae Z0206 synthesized SeNPs. (A) SEM image of E. cloacae Z0206 and SeNPs. (B) EDX analysis of the contents of carbon, nitrogen, oxygen and selenium in the area of (A). (C) Elemental mapping analysis of the distribution of selenium, carbon, oxygen and nitrogen in the area of (A). (D) TEM images of E. cloacae Z0206 and SeNPs. (E) EDX analysis of particle 1 and 2 in (D). (F) High-resolution Se 3D XPS of purified SeNPs synthesized by E. cloacae Z0206.