Investigation the antibacterial and photocatalytic properties of green synthesized manganese-ferrite based nanocomposite

Removing pharmaceutical substances from wastewater is essential due to their high stability and toxic effects on humans and other living organisms before they enter the environment. Green-synthesized nanocomposites possess significant abilities to degrade pharmaceutical compounds and exhibit antibacterial effects. Therefore, this study aimed to investigate the photocatalytic and antibacterial effects of a green-synthesized magnetic nanocomposite.

In this experimental study, the photocatalytic process was conducted on a solution containing tetracycline to examine the photocatalytic capabilities of the synthesized nanocomposite. The antibacterial effect of the nanocomposite was also assessed on Gram-negative and Gram-positive bacteria using the broth dilution method.

The results of the tetracycline antibiotic photocatalytic degradation test showed a removal rate of 87.95% under the following conditions: pH = 7, nanocomposite dose = 0.26 g/L, contact time = 54 min, and initial TC concentration of 10 mg/L. The minimum inhibitory concentration (MIC) of the synthesized nanocomposite was determined to be 1.25 mg/mL for Staphylococcus aureus bacteria and 5 mg/mL for Escherichia coli and Klebsiella bacteria. The minimum bactericidal concentration (MBC) against Escherichia coli and Staphylococcus aureus bacteria was found to be 5 mg/mL.

In addition to the inhibitory and bactericidal capabilities of the manganese-ferrite-based nanocomposite, it can be utilized as a powerful catalyst for the degradation of tetracycline antibiotics in aqueous solutions