Research Article

Effect of Codoping Zinc Oxide Nanoparticles with Sulfur and Nitrogen on Its Energy Bandgap, Antioxidant Properties, and Antibacterial Activity

Figure 5

SEM image of (a) pure ZnO-NPs, (b) 6% N-ZnO, (c) 4% S-ZnO, and (d) S4-N6-ZnO.