Phoenix dactylifera mediated green synthesis of Mn doped ZnO nanoparticles and its adsorption performance for methyl orange dye removal: A comparative study

A comprehensive study on Phoenix dactylifera mediated green synthesis of ZnO, and different content (2%, 4%, 6%, 10%) Mn doped ZnO nanoparticles ([email protected]) were performed to evaluate the elimination dispersing acid dye methyl orange (MO) from aqueous solutions. The as-synthesized [email protected] adsorbents characterized by XRD, FT-IR, UV-VIS spectrophotometer, TEM, point zero charges (pHpzc). In accordance with sorption capacity adsorbents, 10% shows optimal adsorption MO dye. results perfectly matched pseudo-2nd order kinetic model Freundlich isotherm. maximum monolayer recorded be 87.72, 90.09, 91.74, 92.59, 96.15 mg/g for 2%, protected], respectively at pH 5, adsorbent dose 1.5 g/L, 303 K. thermodynamic data all systems confirms that was feasible endothermic in nature. Regeneration showed after four successive ad-/de-sorption cycles, absorption potential not reduced more than 15%. collective benefits easy preparation, non-toxic good removal efficiency towards anionic make as a novel adsorbent.