Abstract
Manganese-oxide-intercalated bentonite clay (Mn3O4/BC) nanocomposites were synthesized via a thermal decomposition method using different precursors. The synthesized nanocomposites were characterized by X-ray diffraction (XRD) analysis, Fourier-transform infrared (FT-IR) spectroscopy, high-resolution scanning electron microscopy (HR-SEM) with energy-dispersive X-ray (EDX) analysis, and field-emission transmission electron microscopy (FE-TEM), revealing that the manganese oxide nanoparticles were well dispersed on/into the surface of the bentonite clay in the composites. The antibacterial and antifungal activity of the Mn3O4/BC nanocomposites were investigated using well diffusion and potato dextrose agar methods, respectively. The antimicrobial activity of the manganese oxide/bentonite nanocomposites against Staphylococcus aureus was greater compared with that against Pseudomonas aeruginosa. The vigorous antifungal behavior observed against Candida albicans could be useful for biomedical applications.
Graphical Abstract
Novel antimicrobial materials were constructed by intercalation of manganese oxide in/onto sodium bentonite clay based on its cation exchange capacity (CEC) via a thermal decomposition method and characterized using suitable techniques. The antimicrobial activity of the nanocomposites was investigated against various microorganisms.
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The authors express their sincere thanks to Professor and Head, Department of Industrial Chemistry, Alagappa University, Karaikudi, Tamil Nadu, India for enabling the HR-SEM analysis in this research work.
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Krishnan, B., Mahalingam, S. Facile synthesis and antimicrobial activity of manganese oxide/bentonite nanocomposites. Res Chem Intermed 43, 2351–2365 (2017). https://doi.org/10.1007/s11164-016-2765-7
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DOI: https://doi.org/10.1007/s11164-016-2765-7