Synthesis of Nanocrystalline Metal Tungstate NiWO4/CoWO4 Heterojunction for UV-Light-Assisted Degradation of Paracetamol

The discharge of pharma products such as paracetamol (PCT) into water has resulted in great harm to humans and emerged a potential threat requiring solution. Therefore, the development smart efficient materials photocatalysts become imperative order treat PCT wastewater. present study demonstrates synthesis pristine NiWO4 CoWO4 heterojunction nanostructure, NiWO4/CoWO4, through hydrothermal process using Teflon-lined autoclave at 180 °C for 18 h. Various spectroscopic techniques, X-ray diffraction (XRD), Fourier transform infrared (FTIR), ultraviolet–visible (UV–Vis), transmission electron microscopy (TEM), scanning microscopy–energy dispersive (SEM–EDX), photoelectron spectroscopy (XPS) were utilised determine lattice, structural, optical, morphological information solid nanomaterial upon formation. synthesised nanomaterials exploited photocatalytic degradation under UV light irradiation. Photocatalytic experiments performed optimization various reaction parameters, irradiation time, pH, catalyst dose, concentration room temperature. results obtained suggested that nanocomposite NiWO4/CoWO4 exhibited enhanced efficiency (97.42%) with compared its precursors—96.50% 97.12% CoWO4. data best defined by Langmuir–Hinshelwood (L–H) model pseudo-first-order kinetics, apparent rates constant 0.015 min−1 NiWO4, 0.017 CoWO4, 0.019 NC. It was observed NC optical properties effected higher rate due improved bandgap energy scavenger test revealed involvement •OH radicals reactive oxidant species (ROS) degradation. material found be highly stable reusable optimized conditions.