Facile Ultrasound-Assisted Green Synthesis of NiO/Chitosan Nanocomposite from Mangosteen Peel Extracts as Antibacterial Agents

Figure 3

FESEM images of NiO NPs (a) and NiO/CS nanocomposites with different chitosan contents: (b) 5%, (c) 10%, and (d) 20%.

(a)

(b)

(c)

(d)