Ecofriendly Synthesis of BiVO4 Nanoparticles from Ipomoea Campanulata Leaf Extracts: Advances in Photocatalysis and Electrochemical Sensing

In this study, Bismuth Vanadate (BiVO ₄ ) nanoparticles were synthesized using an eco-friendly and cost-effective green synthesis method, employing fuel extracted from leaves of the Ipomoea campanulata plant. The phytochemical properties of this plant species were leveraged to tailor the characteristics of the nanoparticles. Various characterization techniques were employed to investigate the composition, morphology, structure, bandgap size, and purity of the synthesized BiVO ₄ nanoparticles. Powder X-ray Diffraction (XRD) confirmed the crystalline nature of the nanoparticles, while Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDX) provided insights into their size, shape, and elemental composition. UV-Visible spectroscopy was used to analyse the optical properties, which are essential for photocatalytic applications. The nanoparticles were evaluated for their photocatalytic activity and electrochemical properties. The synthesized BiVO ₄ nanoparticles were evaluated for their photocatalytic activity in the degradation of methylene blue under visible light irradiation, attributed to their suitable bandgap and surface morphology. Additionally, the nanoparticles were subjected to electrochemical characterization using cyclic voltammetry (CV), linear sweep voltammetry (LSV), and impedance spectroscopy (EIS). The electrochemical studies revealed well-defined redox peaks, indicative of their potential in electrochemical sensing applications.