Characterization and antibacterial activity of MgO/CuO/Cu 2 MgO 3 nanocomposite synthesized by sol-gel technique

In this study, we have adeptly fabricated a unique tri-phasic nanocomposite incorporating MgO, CuO, and Cu 2 MgO 3 via a meticulous sol-gel technique. The comprehensive characterization of the material was conducted using a suite of analytical methods including Fourier -transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV-visible spectroscopy. The XRD patterns confirmed the coexistence of MgO's cubic crystallinity, CuO's monoclinic lattice, and Cu 2 MgO 3 ' s orthorhombic structure within the synthesized composite. Utilizing the Scherrer equation, the crystallite dimensions were determined to range between 31 and 70 nm. The UV-visible spectral analysis pointed to a bandgap energy of 4.26 eV for the nanocomposite, suggesting its suitability for optoelectronic applications. The material's antimicrobial potency was also evaluated, showcasing notable inhibitory action against both Gram-positive bacteria, with a zone of inhibition (ZIO) measuring 18 mm at the highest concentration, and Gram-negative E.coli bacteria, which displayed an 11 mm ZIO at similar concentrations. The amalgamated results underscore the MgO-CuO-Cu 2 MgO 3 nanocomposite's potential as a multifunctional material for advancing optoelectronic technologies and its promising antibacterial capabilities.