Electrochemical sensing and photocatalytic degradation of 2,4-dinitrophenol via bismuth (III) oxide nanowires

Abstract

A user-friendly detection of toxins is extremely required in order to ensure a sustainable environment. In this study, we have performed the electrochemical sensing of 2,4-Dinitrophenol (2,4-DNP) and for this purpose, one-dimensional Bismuth (III) oxide (Bi2O3) nanostructures have been investigated as selective materials. The Bi2O3 nanowires were fabricated at 90 °C through a straightforward heating technique. The standard characterization techniques such as X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) were used to study the morphological, structural and optical properties of the synthesized Bi2O3 nanowires while Cyclic voltammetry (CV) and Differential pulse voltammetry (DPV) electrochemical methods were employed for observing the electrochemical reaction of the original and modified electrode for 2,4-DNP determination. Additionally, the degradation of 2,4-DNP was studied with the addition of Bi2O3 nanowires. The results showed that the Bi2O3 nanowires successfully degrades 2,4-DNP in 600 min under visible light. This study provides an economical, facile and low-temperature method for the application of Bi2O3 nanowires in integration devices.