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Correspondence to Author: Zahraa A. Abdul Muhsin^*, L. A. Yaaqoob ^**, Ghaith H. Jihad^*** 

1. Department of Biology, College of Science, University of Baghdad, Baghdad, Iraq.
2. Department of Biotechnology, College of Science, University of Baghdad, Baghdad, Iraq.
3. Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq.

DOI: 10.52338/joes.2024.4183

ABSTRACT

The field of medical science has begun to acknowledge the potential importance of nanotechnology, particularly in the development of innovative applications related to the treatment of infections. In this study zinc oxide nanoparticles (ZnO NPs) were green synthesized from the Allium ampeloprasum (kurrat) extracte plant after that, the ZnO-TiO2 core-shell nanoparticles were synthesized by using plant extract that acts as a reducing agent. The antibacterial activity was examined using the agar well diffusion method, the results showed that ZnO-TiO2 NPs have an antibacterial effect on both strains of bacteria, the of staphylococcus aureus (gram-positive) reached 25mm at 100μg/ml concentration while the Pseudomonas aeruginosa (gram-negative) showed inhibition zone reached to 20mm at 100μg/ml. Characteristics of the ZnO NPs and ZnO-TiO2 coreshell NPs included FTIR, UV-Vis, EDX, and AFM, The FTIR result indicates the formation of the core-shell around 813.90- 613.32 cm-1 frequency. Furthermore, the Zinc nanoparticles’ UV-Vis absorption peak was detected at 260 nm, whereas the ZnO-TiO2 nanoparticles’ absorption peak was detected at 300 nm. The result of EDX revealed the synthesis of ZnO NPs and synthesized the core shell containing zinc, titanium, and oxygen elements chiefly and absent the impurities. according to the AFM investigation, the average diameter measurement of ZnO NPs is 46.74nm and the average diameter size of ZnOTiO2 NPs is 148.9nm, the green-produced nanoparticles have robust biological activity and are used in a variety of biological applications and tests.

Citation:

Ghaith Jihad . Use (ZnO -TiO2) Nanoparticles as (core-shell) to eliminate both gram (positive and negative) bacteria. Journal of Environmental And Sciences 2024.