Synthesis of Magnetic Novel Hybrid Nanocomposite (Fe3O4@SiO2/Activated Carbon( by a Green Method and Evaluation of Its Antibacterial Potential

Document Type : Research Article


1 Department of Chemistry, Ayatollah Borujerdi University, Borujerd, I.R. IRAN

2 Research Center for Environmental Determinants of Health, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, I.R. IRAN

3 Nutritional Health Research Center, Lorestan University of Medical Sciences, Khorramabad, I.R. IRAN


Inorganic antibacterial nanoagents have more advantages compared to popularly organic agents due to chemical stability, thermal resistance, immunity, and long-term activity. In this study, a magnetically hybrid nanocomposite was prepared from the Nigella sativa oil waste as an organic matrix in a green approach. The homogeneous distribution of core-shell Fe3O4@SiO2 nanoparticles on the activated carbon surface was carried out with a simple chemical method. Characterization of the synthesized nanocomposite was performed by different analysis techniques such as scanning electron microscopy–energy dispersive spectroscopy, scanning electron microscopy, X-ray diffraction, and Brunauer-Emmett-Teller surface area analysis. The antibacterial activities of the prepared nanoparticles against gram-positive and gram-negative bacteria were investigated and the minimum inhibitory concentration and the minimum bactericidal concentration values were compared to imipenem as a standard antibiotic. The effects of temperature, time, and the ratio of the activated carbon to Fe3O4@SiO2 on the MIC and MBC values of the prepared nanocomposites were investigated. The obtained results reveal the substantial role of all of these parameters in the gram-positive antibacterial potential, especially for S. agalactiae bacteria. The results show that the new proposed nanocomposite could be an alternative for an effective filter against gram-positive bacteria alongside having magnetic properties.


Main Subjects

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