Sono-Chemical Synthesis of Magnetic, Photocatalyst and Antibacterial CoFe2O4-Au Nanocomposites for Photo-Degradation of Methyl Orange and Acid Black

The aim of this work is to prepare magnetic, photocatalyst and antibacterial CoFe2O4-Au nanocomposites. Aromatic dyes such as methyl orange and acid black were selected as control dyes and the results showed that were destroyed by ultraviolet light and in the presence of nanocomposites. Also, to control the non-growth and penetration of bacteria, the disk diffusion test was used against coliform, staphylococcus aureus and pseudomonas bacteria (which can be very dangerous). Related to biological risks for organisms, magnetic nanostructures are less dangerous due to their controllability. Therefore, the possible risks of entering the cell membrane and being uncontrollable are ruled out. In the first step, the magnetic core of cobalt ferrite with magnetization of 44 emu/g and magnetic coercivity of 20 Orsted was prepared. In the next step, gold nanoparticles were coated on the magnetic cores using the sono-chemical method. Scanning electron microscope, along with other common spectroscopic methods, examines the dimensions of nanocomposites.