Selective Electrochemical Production of Hydrogen Peroxide from Reduction of Oxygen on Mesoporous Nitrogen Containing Carbon

Abstract

AbstractHeteroatom doped carbon materials with mesopores are active catalysts to bring about oxygen reduction reaction in alkaline media. Here, we aim to see the sights of mesoporous‐nitrogen containing carbon (MNC) prepared at three different temperatures towards selective hydrogen peroxide (H2O2) production during oxygen reduction reaction in neutral media. A high H2O2 selectivity of 85 % at 0.7 V vs. RHE is apparent with a large H2O2 production rate of 9600 μmol gcatalyst−1 h−1 and faradaic efficiency of 88.7 % for MNC‐600 in 0.1 M KHCO3 solution. The effect of electrolyte towards selectivity is also premeditated. In the end, to visualize the local H2O2 production sequential chronoamperometry in SG‐TC mode was performed using Pt‐microelectrode at applied substrate potentials.