Effect of Cobalt Incorporation on Structural, Morphological, Optical and Antibacterial Properties of Rod Shaped ZnO Nanoparticles

Abstract

The prepared Cobalt-doped Zinc oxide nanoparticle (ZnO:Co) was analyzed for Cobalt incorporation of rod shaped ZnO Nanoparticles (NPs) using Antibacterial study. Scanning electron microscope (SEM) and X-ray diffraction (XRD) were analyzed the structural property of the prepared samples. The crystalline size values were decreased due to Cobalt incorporated with Zinc oxide. Scanning electron microscope confirmed that the particles be in rod shape. Energy gap of the particles were strong-minded from optical property of UV absorption spectrum, it further confirmed for the reason of increases band gap in the addition of Cobalt. The emission property and the exchange of Cobalt ions with the Zinc oxide were confirmed by photoluminescence spectrum. The antibacterial efficiency of ZnO and ZnO:Co (Cobalt doped ZnO) samples were determined using disc diffusion technique and showed better antibacterial activity against the animal pathogenic bacteria Pseudomonas aeruginosa than other species used in this study, when higher value of doping level (10 %) and with longer duration of incubation period.