Synthesis uniform size of silver oxide nanoflowers from B. licheniformis bacterium and their application in methylene blue degradation

Chemical pollution of the environment is one of the biggest dangers that threaten the continuity of human life, and following it, governments enact laws aimed at protecting the environment [1]. This study aims to present the synthesis of silver oxide nanoparticles (NPs) using the bacterium Bacillus licheniformis after 48 h of incubation at room temperature. The method used in this paper is an easy, non-toxic, clean and environmentally friendly approach compared to other chemical synthesis methods. The green-synthesized Ag2O NPs were validated using X-ray powder diffraction (XRD), Fourier transformed infrared (FTIR), ultraviolet-visible spectroscopy (UV-Vis), scanning electron microscopy (SEM), and transmission electron microscope (TEM) techniques. Silver oxide NPs were produced by B. licheniformis in a green method and were able to reduce the color of methylene blue (MB) due to their photocatalytic activity (see Fig 1). It is assumed that the greater vacancy of oxygen in the nanoparticles that have been synthesized imparts an attribute of improved photocatalytic capacity and produces active species by consumption of light which decreases organic pollution and could be used as an efficient bioremediation tool because these nanoflowers demonstrated enhanced photocatalytic activity [2,3].

Green-synthesis, Silver oxide nanoparticles, Bacteria, Methylene blue degradation