Biotechnological Production Process and Life Cycle Assessment of Graphene

Figure 6

SEM images of (a) pure graphite, (b) pure graphene oxide, and (c) graphene prepared by chemical reduction method and (d) graphene prepared by microbial reduction method. (e) and (f) are higher magnifications of (c) and (d).

(a)

(b)

(c)

(d)

(e)

(f)