The urgent requirement is to identify an appropriate dye degradation technique and a suitable catalyst material due to the significant water contamination caused by effluent dyes. This study utilized various electrocatalytic materials to confirm efficiency of the electrochemical oxidation technique for eradicating the industrial textile colorant Alizarin Yellow R (AYR) from aqueous solutions: NiS/CuO/g-C 3 N 4 anodes. AYR is regarded as hazardous to aquatic life and potentially harmful to human health due to its potential for mutagenic and carcinogenic effects after extended exposure, underscoring the necessity of its efficient removal from wastewater. X-ray diffraction analysis revealed a lattice assembly with a crystallite extent of 0.2 nm. The adsorption capability was investigated under several experimental conditions, including voltage, catalyst amount, time, and dye intensity. The NiS/CuO/g-C 3 N 4 electrode produced 99.25% AYR degradation in 20 min with ideal voltage, catalyst loading, and AYR concentration, following pseudo-first order kinetic with a rate constant of 0.23 min-1. The surface area was high (129 m 2 /g) according to the BET analysis, and XRD verified that the composite contained the crystalline structures of NiS, CuO, and g-C 3 N 4 . The rapid electron transfer and potent group of hydroxyl radicals are responsible for the effective electrocatalytic activity. The deterioration of AYR occurs according to pseudo-first-order reaction kinetics, and the identification of key intermediate products leads to the proposal of a feasible AYR mineralization pathway. Based on these findings, NiS/CuO/g–C 3 N 4 composite electrode appears to be an auspicious applicant for the electrochemical degradation of AYR wastewater. • NiS/CuO/g-C 3 N 4 composite anode validate electrochemical oxidation of Alizarin Yellow R removal. • 99.25% degradation in 20 min under optimize voltage, catalyst loading, time, and dye concentration. • Performance drive by fast electron transfer and abundant hydroxyl radical (⸱OH); pseudo-first-order kinetics. • XRD confirms crystalline assembly (crystallite 0.2 nm); intermediate identified and a mineralization pathway proposed.
Zafar et al. (Tue,) studied this question.