The electro-Fenton (EF) process combines an oxygen reduction reaction (ORR) and Fenton-like reaction for application in water treatment. However, many electrode designs simply aim at H₂O₂ production or catalyze either the ORR or Fenton-like reaction. This paper explored the effect of pyrolysis on MIL-101(Fe) and found that a thermal treatment at 310 °C (310T) partly maintained the original crystal structure but exposed more Fe sites and oxygen vacancies (OVs). The fabricated 310T/CB@NF gas diffusion electrode had a 4e-ORR tendency, although it exhibited good performance even at low voltages (1.2 V) with the detected current below 10 mA. In the assessment of the H₂O₂ production, ability as a Fenton reagent and DCF removal, the EF process exhibited a synergy between 310T and carbon black (CB). 310T manifested good Fenton activity on the Fe sites and OVs and directly worked toward the DCF degradation. CB with a high ORR catalytic activity provided a basis for the high H₂O₂ yield, which is indirectly conducive to the DCF removal.

电芬顿（EF）工艺结合了氧还原反应（ORR）和类芬顿反应，可用于水处理。但是，许多电极设计只是针对H ₂ O _2的产生或催化ORR或类Fenton反应。本文探讨了热解对MIL-101（Fe）的影响，发现在310°C（310T）的温度进行热处理可以部分保留原始晶体结构，但暴露出更多的Fe位和氧空位（OVs）。制成的310T / CB @ NF气体扩散电极具有4e-ORR趋势，尽管即使在低电压（1.2 V）和检测电流低于10 mA的情况下也表现出良好的性能。在H ₂ O ₂的评估中生产，作为Fenton试剂的能力和DCF的去除，EF工艺在310T和炭黑（CB）之间表现出协同作用。310T在Fe位点和OVs上表现出良好的Fenton活性，并直接作用于DCF降解。具有高ORR催化活性的CB为高H ₂ O ₂产量提供了基础，这间接地有助于DCF的去除。