Synthesis of Ag−Cu−MnO Triple‐Metal Composite And Evaluation of its Antimicrobial Activity and Dye Removal Efficacy

Abstract The synthesis of triple metal oxide nanocomposites has revolutionized materials science due to their unique properties resulting from the interaction of multiple oxide components. This study aimed to synthesize mixed metal oxide nanocomposites using a co‐precipitation method with copper sulfate, silver nitrate, and potassium permanganate as precursor salts and sodium hydroxide as the precipitating agent. The resulting Ag−Cu−MnO triple metal composite was extensively characterized using X‐ray diffraction (XRD), scanning electron microscopy with energy‐dispersive X‐ray spectroscopy (SEM‐EDS), and Fourier transform infrared (FT‐IR). The composite exhibited effective bactericidal efficacy against various bacterial strains, including Enterobacter bugandensis, Bacillus cereus, Staphylococcus aureus, and Pseudomonas aeruginosa. Moreover, the composite demonstrated notable photocatalytic activity, degrading 87.26 % of 50 ppm Eosin Yellow within 140 minutes under sunlight irradiation, as monitored by a UV‐vis spectrophotometer. This study highlights the dual functionality of the synthesized composite as both a photocatalyst and an antibacterial agent. These findings underscore its potential for diverse applications in environmental remediation and healthcare, marking a significant advancement in materials science.