Synthesis of Copper Oxide Nanoparticles Using Plant Leaf Extract of Catha edulis and Its Antibacterial Activity

Figure 7

Tauc plots of CuO NPs synthesized using copper (II) nitrate trihydrate and Catha edulis leaf extract in (a) 1 : 10, (b) 3 : 10, and (c) 1 : 2 ratios (w/v).