Efficient Photocatalytic Degradation of Chlorpyrifos Pesticide from Aquatic Agricultural Waste Using g-C₃N₄ Decorated Graphene Oxide/V₂O₅ Nanocomposite

In the present work, graphitic carbon nitride/GO/V₂O₅ nanocomposite was synthesized via a single stage and utilized this photocatalyst for the degradation of the pesticide Chlorpyrifos. The nanocomposite was prepared using the hydrothermal method. The crystal structure was determined using powder X-ray diffraction of ternary nanocomposite material crystallite size, phase, and defects. Scanning electron microscopy (SEM) and FT-IR evaluated surface morphologies and functional groups. FTIR heterocycle C–N and C=N stretching modes due to bands of 1200–1650 cm⁻¹ During the course of the experiment, the impacts of the experimental parameters (such as pH, time, H₂O₂ concentration, and Catalyst Dose) on the degradation of Chlorpyrifos were investigated. The photocatalytic studies indicated that the graphitic carbon nitride/GO/V₂O₅ composites significantly outperformed the pure versions of g-C₃N₄ in photocatalytic degradation of Chlorpyrifos. The excellent photocatalytic removal efficiency of more than 88% in 120 min obtained using a graphitic carbon nitride/GO/V₂O₅ catalyst pointed toward a great alternative catalyst for the treatment of Chlorpyrifos and other hazardous pesticides from wastewater. By using 0.1% H₂O₂, the photocatalytic elimination of Chlorpyrifos was further increased from 88 to 90.5%. The g-C₃N₄/GO/V₂O₅ catalyst has outstanding recycling performance and a high level of stability.