环境工程学报2025，Vol.19Issue(3)：595-604,10.DOI:10.12030/j.cjee.202409108
双金属阳极膜电催化原位产臭氧去除废水中的盐酸四环素
Removal of tetracycline from wastewater by in situ-produced ozone through bimetallic anode membrane electrocatalysis
摘要
Abstract
In this study,the electrospinning technology was used to synthesize the CoMo-electrocatalytic anode membrane(CoMo-ECM)for the degradation of tetracycline(TC-HCl).The results showed that the degradation of TC-HCl followed a quasi-first-order kinetic,with a degradation rate constant and half-life of 0.24 min-1 and 2.9 min,respectively,at a current density of 10 mA·cm2.The highest degradation rate occurred under neutral partial acid conditions(pH=5～6),and the removal rate approached to 100％at 40 min.During electrochemical degradation,five intermediate products were identified.The main degradation pathways relied on reactive oxygen species(ROS)derived from the cracking of ozone with high concentrations,which was produced in situ by anodic catalytic membranes,mainly including three types of ROSs:·OH,1O2 and·O2-.The double-bonded carbon atom near the hydroxymethyl group is the location where·OH attacked,and the cleavage of the Co-N bond is the rate-limiting step of the electrochemical degradation of the TC-HCl.The nitrogen in TC-HCl mainly converted to nitrate and ammonium.The results showed that CoMo-ECM,as an anode membrane,can in-situ produce ozone and efficiently degrade TC-HCl.关键词
静电纺丝/形貌控制/电催化/盐酸四环素/臭氧Key words
electrospinning/morphology control/electrocatalysis/tetracycline hydrochloride/ozone分类
环境科学引用本文复制引用
程心悦,张晓楠,高兆鹤,何亮,关清卿,周华晶..双金属阳极膜电催化原位产臭氧去除废水中的盐酸四环素[J].环境工程学报,2025,19(3):595-604,10.基金项目
国家自然科学基金重点资助项目(52260009) （52260009）
云南省科技厅科技计划项目(202303AG100002-03) （202303AG100002-03）
