Electrochemical detection and degradation of textile dye Congo red at graphene oxide modified electrode

Abstract

The extensive treatment of most of the pollutants to make the water reusable involves many complex techniques. In the current work, an azo dye Congo red (CR), electrochemical degradation of it was performed via graphene oxide (GO) nanoparticles fabricated on glassy carbon electrode (GCE). The current technique has grabbed some attention due to its applicability for the analysis of CR dye in the soil as well as in water samples. Voltammetric techniques were adopted to study dye electrochemical performance and a linear relationship in 0.01 μM to 0.2 μM range with a LOD value of 2.4 × 10−7 M was observed. The lower detection limit value makes the modified sensor valuable for the entire analysis of CR