Microwave-mediated Fabrication of Mesoporous Bi-doped CuAl2O4 Nanocomposites for Antioxidant and Antibacterial Performances

Abstract

Abstract We reported the fabrication of bismuth-doped copper aluminate nanocomposites (BiCuAl 2 O 4 NCs) via microwave-assisted method for antioxidant and antibacterial performances. As-fabricated material was characterized by electron spectroscopy techniques like X-ray diffraction (XRD), Fourier transform infrared (FTIR), energy dispersive spectroscopy (EDS), diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), Raman, scanning electron microscopy (SEM) and BET. The structural and chemical state authentication of material was confirmed by XRD, FTIR, EDS, Raman and XPS, while morphology explored by SEM. The surface area and porosity were estimated by BET, and result revealed mesoporous nature of material. The band gap energy of material was estimated by K-M plot. Then, the antioxidant property was obtained by α, α-diphenyl-β-picrylhydrazyl (DPPH). Ethanolic, methanolic extracts were used for the antioxidant activity, while ascorbic acid was used as a standard medium. Moreover, the antibacterial activity of material was tested against human pathogenic bacteria namely Staphylococcus aureus , Klebsiella pneumoniae, Enterococcus faecalis, Candida albicans and gram-negative Escherichia coli and Enterobacter cloacae. Result rendered effective antibacterial activity against E. coli . S aureus and E. faecalis.