Systematic approach on the fabrication of Mn doped ZnO semiconducting nanoparticles by mixture of fuel approach for antibacterial applications

Abstract

Undoped and Mn-doped ZnO nanoparticles were synthesized by sol–gel auto combustion method with precursors such as Zinc and Manganese nitrates with the assistance of Ammonium acetate and Urea as fuel by increasing the manganese concentration in zinc oxide and their structural, morphological, optical, magnetic and antibacterial properties were studied by XRD, field emission scanning electron microscope, transmission electron microscope, photoluminescence, fourier transform infrared spectroscope and vibrating sample magnetometer (VSM). In this article magnetic property and antibacterial activity were estimated at Mn (X = 0.05, 0.15 and 0.25 wt%) doping level in ZnO. Pseudomonas aeruginosa is a Gram negative, great metabolic diversity (soil, water and atmosphere) bacteria and also in its role as an opportunistic human pathogen, plant pathogen, soil bacterium, which may affect the spintronics and biomedical devices. The magnetization curves obtained using VSM show a sign of paramagnetism when the Mn doping level is 0.05 and 0.15 wt% and a behavior of ferromagnetism was observed at 0.25 wt% due the secondary phase Mn3+ and Mn4+ interactions, these interaction not only enhance the magnetic property, but also exhibits good antibacterial efficiency. So there is an immense importance for the fabrication of spintronic and biomedical devices with antibacterial activity to the sustainable technologies.