Preparation Tio₂and Zno/Tio₂nanocomposites locally and use against Staphylococcus aureus

Abstract

Abstract Enhancement antibacterial activities of a nanocomposit metal oxide by modifying the energy band gap are a future of anti-bacterial and viruses. (TiO 2 and ZnO/TiO 2 ) nanocomposit (NC) were prepared using a simple Sol-Gel method at calcination temperature 400, 500, 600, and 700 C. The structure, morphology and optical properties were utilized using X-ray diffraction (XRD), Fourier transmission infrared (FTIR), and UV-Vis spectroscopy. Antibacterial activity was measured according to the Kirby-Bauer disc method against Staphylococcus aureus. XRD patterns and FTIR confirmed the presence of TiO2, ZnO nanoparticles (NP) without any change in the main peaks. FESEM pictures illustrated like a spherical shape for all that NCs samples especially at temperature 600 C with an average particle size less than 66nm. UV-Vis spectra showed a shift of absorption edges to a visible region. TiO 2 / ZnO NPs showed increase the antibacterial activity against bacteria strains Staphylococcus aureus. That enhancement of the NCs activity might pave the road to significant medical invention in the future.