Synthesis and Characterization of Pd-Ni Bimetallic Nanoparticles as Efficient Adsorbent for the Removal of Acid Orange 8 Present in Wastewater

In this study palladium-nickel (Pd-Ni) nanoparticles supported on carbon and cerium oxide (Pd-Ni/AC-CeO2) were synthesized by a transfer phase method characterized scanning electronic microscopy (SEM), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDX). The XRD SEM data concluded the presence of alloy formation between Pd Ni. particles used as an adsorbent for removal azo dye acid orange-8 (AO-8) from water found to be effective in (over 90% efficiency) selected dye. Different kinetics equilibrium models applied calculate adsorption parameters. most suitable model that best fitted was Langmuir maximum capacities 666.6, 714 769 mg/g at 293, 313 333 K, respectively, with R2 values closed 1 while case fit obtained pseudo-second order high value. Furthermore, thermodynamics parameters such free energy, enthalpy, entropy calculated process exothermic value ?H° (?7.593 kJ mol?1), spontaneous ?G° negative (?18.7327, ?19.4870, ?20.584 kJ/mol respectively). A positive change ?S° 0.0384 /mol K indicates increased disorder solid–solution interface during process. An attempt made recycle Pd-Ni/AC-CeO2 solvents recycled reused 6 cycles AO-8 efficiency up 80%. Based findings study, could effectively other pollutants wastewater, however, further studies are needed prove mechanisms.