Electroreduction of nitrate ion on Pt, Ir and on 70:30 Pt:Ir alloy

Abstract

The electro-reduction of nitrate ions in acid medium on Pt, Ir and on a 70:30 Pt, Ir alloy was studied by cyclic voltammetry. The alloy has a higher activity than the pure metals, which was interpreted as being due to bifunctional catalysis. Values for activation energies evaluated from the experimental data and Arrhenius plot are discussed.