Insights into the photocatalytic and supercapacitor performance of V2O5 nanorods synthesized by green synthetic approach using Epipremnum aureum leaves extract

Abstract

Vanadium pentoxide (V₂O₅) needle-shaped nanorods (NRs) were prepared using an environmentally friendly green synthesis method using Epipremnum aureum leaf extract. Diverse techniques, including XRD, FTIR, UVDRS, FESEM, EDX, HRTEM, BET, and XPS analyses, analyzed the V₂O₅ NRs. The PXRD pattern revealed that the V₂O₅ NRs have an orthorhombic phase, and the HRTEM pattern confirmed the needle-shaped NRs' structure. The stretching vibration of V–O-V was detected at 779.2 cm⁻¹ in the FTIR spectrum. FESEM image analysis confirms that the as-synthesized material has a nanorod-like shape. It was observed that the optical bandgap of V₂O₅ NRs was 1.83 eV. Under visible light irradiation, the photocatalytic degradation study of V₂O₅ NRs about the Methyl Blue (MB) dye was examined. Excellent photocatalytic activity against MB dye was demonstrated by V₂O₅ NRs manufactured through a green approach. Further, the electrochemical capabilities have been studied using techniques such as cyclic voltammetry (CV), galvanostatic charge–discharge (GCD), and electrochemical impedance spectroscopy (EIS). The results of these studies show excellent capacitance performance for supercapacitor applications. These findings might open up new avenues for developing novel materials for energy storage applications and waste-water treatment.