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Abstract

Calcium oxide nanoparticles (CaO NPs) gain great value in the areas of energy storage and drug delivery systems. Due to good porosity, it finds its part in storage systems and its biocompatibility earns it a good value in drug delivery and gene transfection. Synthesis of nanoparticles by waste materials and plants of metal oxide is gaining considerable interest due to environmentally friendly reactants and room temperature synthesis. This is most using method of preparation of nanoparticles as it makes use of pollution-free chemicals and encourages the use of non-toxic solvents such as water and plant extracts. In this present study, the calcium oxide nanoparticles synthesized by the ecofriendly green synthesis using environmentally begin waste chicken egg shells. CaO nanoparticles show better antibacterial activity. CaO was bio modified by Cissus quadrangularis, Acalypha indica, Solanum nigrum, Phyllanthus niruri to enhance the antibacterial activity, then the antibacterial activity of pure CaO and bio modified CaO was investigated against B. substilis, S. aureus and E. coli species. The synthesized nanoparticles have been characterized by XRD. Antimicrobial activity of synthesized nanoparticles were also analyzed in this study.