Effects of Synthetic Procedures and Postsynthesis Incubation pH on Size, Shape, and Antibacterial Activity of Copper (I) Oxide Nanoparticles

Figure 4

Inactivation efficiencies of Cu₂O NP incubated at pH 6 and pH 8 after 1 h and 24 h of contact with E. coli suspension ((a) pH6, 1 h; (b) pH8, 1 h; (c) pH6, 24 h; (d) pH8, 24 h). Different letters on the bars in the graph demonstrate significantly different inactivation efficiencies ().

(a)

(b)

(c)

(d)