Enhanced sonophotocatalytic degradation of phenazopyridine using mesoporous nickel oxide nanoparticles synthesized by a solvothermal method in deep eutectic solvent

NiO nanoparticles (NPs), synthesized using deep eutectic solvents (DES) via the solvothermal method, exhibit enhanced photocatalytic activity for wastewater pollutant degradation. Characterization via XRD, BET, and HRTEM/TEM confirmed high porosity and surface area, correlating with improved performance. Sonophotocatalytic processes achieved ۹۰% removal of organic pollutant phenazopyridine (PhP), with a ۲۸.۳۶% synergistic effect from combined ultrasonic and UV radiation. Scavengers reduced efficiency, while potassium persulfate enhanced degradation by ۷%. PhP degradation followed pseudo-first-order kinetics (R² > ۰.۹۷), and reusability tests showed minimal performance decline after four cycles, enhancing industrial applicability.

کلیدواژه ها:

Sonophotocatalyst ، NiO nanoparticles ، Deep eutectic solvent ، Phenazopyridine ، Wastewater treatment