Synthesis and Antibacterial Properties of Novel ZnMnO-Chitosan Nanocomposites
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The development of productive antibacterial agents from nontoxic materials via a simple methodology has been an immense research contribution in the medicinal chemistry field. Herein, a sol-gel one-pot reaction was used to synthesize hybrid composites of hausmannite-chitosan (MnO-CS) and its innovative derivative zinc manganese oxide-chitosan (ZnMnO-CS). Fixed amounts of CS with different metal matrix / ratios of 0.5%, 1.0%, 1.5%, and 2.0% for Mn and Zn precursors were used to synthesize ZnMnO-CS hybrid composites. X-ray diffraction analysis indicated the formation of polycrystalline tetragonal-structured ZnMnO with a CS matrix in the hybrids. Fourier-transform infrared spectroscopic analysis confirmed the formation of ZnMnO-CS hybrids. Detailed investigations of the surface modifications were conducted using scanning electron microscopy; micrographs at different magnifications revealed that the composites' surface changed depending on the ratio of the source materials used to synthesize the ZnMnO-CS hybrids. The antibacterial activity of the MnO-CS and ZnMnO-CS composites was tested against various bacterial species, including , , , and The zone of inhibition and minimum inhibitory concentration values were deduced to demonstrate the efficacy of the ZnMnO-CS nanocomposites as antibacterial agents.
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