Anodic Generation of Hydrogen Peroxide by Using Manganese(III) Oxide Based Catalyst

Electrochemical synthesis of hydrogen peroxide (H2O2) during oxidation of water oxidation could present a valuable method to generate this powerful oxidant. A simply structured Mn based electrode over a carbon polymer composite substrate (Mn(III)oxide/C)was manufactured by a thermal compression bonding method. The electrode was then used for water electrolysis at different electrode potentials and the amount of hydrogen peroxide generated was determined in an undivided electrochemical cell. The results show that the optimal values for H2O2 synthesis are anodic potentials of +0.5 V, +0.6 V and +0.7 V vs. Hg/HgO and producing H2O2 up to 11 ppm in an undivided cell.