Particle Size-Dependent Antibacterial Activity and Murine Cell Cytotoxicity Induced by Graphene Oxide Nanomaterials

Figure 3

SEM morphology of E. coli cells after GQD, SGO, and LGO treatment. SEM morphology of E. coli cells (strain ATCC-25922): (a) control; (b) E. coli treated with 50 μg/mL GQD solution for 2 h; (c) E. coli treated with 50 μg/mL SGO solution for 2 h; (d) E. coli treated with 50 μg/mL LGOs for 2 h. White arrows: ruptured E. coli cells. Black arrows: GO sheet aggregates. Scale bar = 1 μM.

(a)

(b)

(c)

(d)