Microbacterium endophyticum-mediated Zinc oxide nanoparticles synthesis: A novel strategy for eco-friendly dye decolorization

Abstract

Zinc oxide nanoparticles have unique physicochemical properties that have caused them to receive significant attention in various scientific and technological fields. The Zinc oxide nanoparticles (ZnO NPs) synthesis can be achieved by various methods involved precipitation, and green synthesis methods, each influencing the size, morphology, and crystalline structure of the nanoparticles. In UV–visible spectrophotometer the peak at 356 nm confirms the ZnO NPs. X-ray diffraction exhibited the average crystalline size of the ZnO NPs was 22 nm, and the absorption peak at 599.63 cm⁻¹ showed the Zn-O bending in Fourier-transform infrared spectroscopy. ZnO NPs exhibit significant qualities that includes the large surface area, outstanding photocatalytic activity, as well as antimicrobial effects. These attributes have led to their widespread application in fields such as photocatalysis, sensors, drug delivery, and biomedical devices. In the present study, the ZnO NPs synthesized from Microbacterium endophyticum, was utilized for the decolorization of azo dyes utilized in textile industries including, CR (Congo red dye) and RB (Reactive black dye). The results showed the decolourization percentage of Congo red and Reactive black were observed as 75 % and 80 % respectively.