Antibacterial activity of ZnO powders against Stahylococcus aureus

ZnO powders were synthesized by sol-gel method from Zn(CH3COO)2.2H2O. The prepared powders were calcined at the temperature of 300, 500 and 700 °C for 1 h with the heating rate of 10 °C/min. Several analytical techniques including XRD, EDX and TEM were employed to characterize the synthesized powders. The antibacterial activity was evaluated by the inactivation of S. aureus under UV irradiation for a certain time. It was observed that higher calcination temperature gave superior antibacterial activity. At the highest calcination temperature investigated in this experiment, the powders showed antibacterial activities of 100.00% under UV irradiation for 20 min.