Voltammetric Generation and Kinetic Stability of Nitro Anion Radical from Nitrofurazone in Ionic Liquids

The nitrofurazone (NF) electrochemical reduction has been studied by cyclic voltammetry (CV) and square wave (SWV) in non-aqueous medium using three different ionic liquids (IL): BMImTf2N, BMImBF4 BMMImTf2N, having a carbon fiber microelectrode as working electrode. In all of them, two reversible cathodic peaks were recorded for NF. Under higher frequency values, only one peak was registered. systems reversibility could also be observed CV, since redox couple registered this reduction. with product reagent adsorptions on the electrode surface confirmed electrons number involved indicated nitro-anion radical formation followed its respective dianion. For first reduction, EC mechanism (an step chemical one) considered aprotic medium, which there probable second-order reaction after charge transfer process, being kinetic constants calculated following Olmstead Nicholson model.