Adsorption of Dye Using Cu Doped Fe2O3 Nanoparticles: An Innovative Approach for Effective Wastewater

Access to safe drinking water has become more challenging due to daily water pollution worldwide. This study synthesized Cu-doped Fe2O3 NPs via the co-precipitation method and demonstrated their excellent adsorption efficiency for dye removal. Cu/Fe2O3 NPs effectively removed the synthetic acidic dye Acid Blue 93 under optimized conditions: pH 2, 0.05g/50mL dosage, 90 min, 35oC temperature, and 150ppm Acid Blue-93 dye concentration, achieving higher adsorption capacity of 38.02 mgg-1. Pseudo-second-order and Freundlich adsorption isotherms demonstrated strong fit results concerning the adsorption kinetics and equilibrium data. Thermodynamic parameters confirmed the adsorption process’s feasibility. Electrolytes and heavy metal ions influenced adsorption potential, while surfactants reduced efficiency. 0.5 N NH4OH and 0.5 N NaOH was found to be the most effective for desorption. FTIR and X-ray diffraction (XRD) have been used to examine the functional groups involved in active binding and crystal structure.