Curious Case of Bactericidal Action of ZnO

Figure 2

SEM micrographs of (a) ZnO, (b) ZnO₂, (c) ZnO-H, (d) ZnO-300, (e) ZnO-400, and (f) ZnO-500 (all scale bars: 500 nm).

(a)

(b)

(c)

(d)

(e)

(f)