Biosynthesis and characterization of novel nanocomposite ZnO/BaMg2 efficiency for high-speed adsorption of AZO dye.

In this study, a new ZnO/BaMg₂ nanocomposite was synthesized, using the green synthesis method in which lemon peel extract was used as a reducing agent to form ZnO/BaMg₂ nanocomposites. The synthesized nanoparticles were characterized by visible and ultraviolet light spectroscopy showing absorption peaks at around 277 nm. The chemical bond configurations of ZnO/BaMg₂ were confirmed by Fourier transform infrared (FT-IR) spectroscopy analyses. The results of X-ray diffraction (XRD) analysis revealed the formation of a hexagonal crystal structure, and the particle SEM analyses showed irregular shapes around 35.89 nm for the synthesized nanoparticles. The catalytic activity of synthesized ZnO/BaMg₂ in the decomposition of methyl orange (MO) and rose bengal (RB) dyes was studied by visible and UV–vis spectroscopy and compared with the catalytic activity of ZnO NPs. The decolorization ratios of both dyes for ZnO/BaMg₂ composite were 90.2% and 98.71% of RB and MO, respectively, while for ZnO NPs 75.57% of MO and 88.69% of RB within 120 min. [ABSTRACT FROM AUTHOR]