金属氧化物电极材料在降解含酚废水中的应用

APPLICATION OF METAL OXIDATION ANODE IN THE DEGRADATION OF PHENOL WASTEWATER

电极材料是电化学催化氧化技术的核心,直接决定着酚类化合物的降解机理、降解历程和降解效果。综述了PbO2、SnO2和其它金属氧化物电极材料对含酚废水的降解效果。介绍了提高PbO2和SnO2电极催化活性的方法并阐述了其失活机理与延长寿命的途径。指出寻找廉价、稳定性好、析氧超电势高、催化活性好的电极材料是电催化氧化降解含酚废水的主要研究方向。

Electrode materials are the key factor of electrochemical catalytic oxidation technology. They directly determine the mechanisms, pathways and effects of electrochemical degradation of phenolic compounds. The effects of electrochemical degradation of phenolic compounds at PbO2, SnO2 and other metal oxide electrodes were summarized. The methods of improving the catalytic activity, the ways to extend the service life and the deactivation mechanisms of PbO2 and SnO2 electrodes were discussed. It was also proposed that the main development trend of electrochemical catalytic oxidation for degradation of phenolic compounds was to find inexpensive, well stable electrode materials with high oxygen evolution potential and high catalytic activity.