Abstract

In this work, copper oxide (CuO)\\iron oxide (Fe2O3) decorated with silver oxide (Ag2O) nanoparticles (NPs) was prepared using a triple hydrothermal process. The XRD results confirm the presence of the diffraction phases for CuO, Fe2O3, and Ag2O with an average crystallite size of nanocomposite equal to 24 nm. EDS/elemental mapping results confirm that Ag2O acts as a decoration for CuO and Fe2O3. The optical characteristics displayed the presence of a surface plasmon (coherent delocalized electron oscillations) with a bandgap of 3.1 eV and blueshift to short wavelengths. The antimicrobial activity against Gram-negative bacteria (Klebsiella pneumoniae and Escherichia coli), Gram-positive bacteria (Staphylococcus epidermidis and Staphylococcus aureus), and gram-positive fungi (Candida albicans) displayed inhibition zones of 11, 13, 15,12, and 13 mm, respectively. The author suggests that the current work is original and can contribute to the development of a new methodology for the manufacture of nanocomposites for antibacterial applications.

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