Membrane‐free Electrolysis Production of Hydrogen Peroxide on Low‐cost Metal‐free Electrocatalysts for Dye Degradation

作者：Hao Ni, Tao Yang, Xueqing Peng, Heng‐Qiang Zhang, Aiguo Kong · 发表于：Chemistry - A European Journal · 年份：2024 · DOI：10.1002/chem.202403279 · 被引用次数：6 · 研究领域：Electrocatalysts for Energy Conversion、Advanced Photocatalysis Techniques、Advanced oxidation water treatment

Abstract The efficient production of hydrogen peroxide (H 2 O 2 ) solution was achieved by combining cathodic two‐electron oxygen reduction (2e − ORR) and anodic two‐electron water oxidation (2e − WOR) in two half‐reaction cells. h ‐BN loaded on carbon fibers ( h ‐BN@C) is prepared and employed as an anode material to catalyze 2e − WOR, while sulfonated commercial BP‐2000 carbons (BP‐2000‐SO 3 H) were prepared as the cathode materials for 2e − ORR. In a 2 M KHCO 3 solution, an overall Faradaic efficiency of 97 % and a total H 2 O 2 production rate of 1872 mmol g −1 h −1 over metal‐free electrodes were accomplished in a membrane‐free flow cell. The dilute H 2 O 2 solution could be directly used to degrade Rhodamine B, methyl blue and methylene orange dyes in water. This work proved low‐cost production of dilute H 2 O 2 solution in simple membrane‐free flow cells with single electrolyte and on‐site utilization for efficient dye degradation.