A facile low-temperature synthesis of V₂O₅ flakes for electrochemical detection of hydrogen peroxide sensor

Herein, we report a simple hydrothermal synthesized V₂O₅ flake employed as an electrode material for non-enzymatic hydrogen peroxide (H₂O₂) sensor application. The morphology, structural, and electrochemical properties of the as-prepared material were characterized by using various physicochemical and electrochemical methods viz. scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and amperometric (i-t). Moreover, an excellent electrochemical performance has been achieved by using the V₂O₅ flakes modified glassy carbon electrode (GCE) over the reduction of H₂O₂. In optimum experimental conditions, the reported electrochemical sensor was found with a wide linear range (0.1–408 μM), low detection limit (0.06 μM), and excellent sensitivity (9.87 μA μM⁻¹ cm⁻²) with anticipated selectivity. Hence, the novel as-prepared V₂O₅-GCE provides a new avenue for the fabrication of amperometric H₂O₂ sensor with excellent real sample analysis. [Figure not available: see fulltext.].