Antibacterial Application of Undoped and Doped CdO Nanocrystalline Thin Films

Nano crystalline thin films of undoped and Al doped Cadmium oxide were synthesized using chemical bath deposition method and were annealed at 500˚C. The films were characterized to study their structural, optical and compositional properties. Antibacterial activity of CdO films were assayed by using the agar well diffusion technique. The antibacterial activity of undoped and Al doped CdO solutions was analyzed to the Gram-positive bacteria Bacillus cereus and the gram-negative bacteria Vibrio Cholera. The present study reveals that the diameter of zone of inhibition is found to be more for gramnegative bacteria than gram-positive for undoped CdO and Al doped CdO.