Anodic oxidation of hydrazine and its derivatives: Part I. The oxidation of hydrazine on gold electrodes in acid solutions

Abstract

The anodic oxidation of hydrazine on gold electrodes has been studied in acid solutions (0.5–2N H2SO4). The electrode pretreatment consisted of electropolishing, followed by a sequence of potentials (0.90V,−0.20V) before each measurement. The Tafel slope was determined by four independent techniques (shift of the peak potential with sweep rate in linear potential sweep, foot of the current/potential curve in the same measurement, galvanostatic and steady state potentiostatic) all of which gave values in the range of 90–100 mV. The reaction order and pH effects were 0.3 and 0.8, respectively.