成果归属作者：

杨琦

成果归属机构：

水资源与环境学院

作者：

Li, Jingran ; Liang, Xuetao ; Zhou, Wenjin ; Liu, Bingyang ; Yang, Zhilin ; Yang, Qi

单位：

China Univ Geosci Beijing, Key Lab Groundwater Circulat & Environm Evolut, Minist Educ, Beijing 100083, Peoples R China;China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China;Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China

摘要：

In this study, nitrogen-doped porous carbon-supported iron-manganese microspheres (FeMn@NC-700) were successfully synthesized and employed as three-dimensional particle electrodes (3DPE) for electro-oxidative of tetracycline (TCH) in water. FeMn@NC-700 exhibited stable catalytic activity and effective TCH removal capabilities under complex water quality conditions and varying pH levels. Under optimized conditions, the 3D/ FeMn@NC-700 system reduced the TCH concentration from an initial 20 mg/L to 0.96 mg/L within 60 min, achieving a 95.23 %removal efficiency with an energy consumption of only 10.05 kWh/m3. 3 . The outstanding electrocatalytic activity of the 3D/FeMn@NC-700 system was attributed to the dynamic redox cycling between the Fe and Mn species on the 3DPE surface. Radical quenching experiments and electron paramagnetic resonance (EPR) analysis identified the predominant role of singlet oxygen (1O2), 1 O 2 ), effectively removing TCH with the assistance of hydroxyl radicals (& sdot;OH) and superoxide anions (O2 & sdot;-). 2 & sdot;- ). The degradation pathways of major intermediate products of TCH were proposed, along with a toxicity assessment. In conclusion, the 3D/FeMn@NC-700 system represents a reliable and cost-effective technology for TCH wastewater treatment.

基金：

Major National Science and Tech-nology Project of China [2015ZX07406005]; National Natural Science Foundation of China [50578151]

语种：

英文

DOI：

10.1016/j.seppur.2024.129382

来源：

SEPARATION AND PURIFICATION TECHNOLOGY,2025():.

出版日期：

2025-02-19

提交日期：

2024-09-21

引用参考：

Li, Jingran; Liang, Xuetao; Zhou, Wenjin; Liu, Bingyang; Yang, Zhilin; Yang, Qi. Nitrogen-doped iron-manganese porous carbon particle electrodes for electrocatalytic degradation of tetracycline: Interfacial reaction mechanisms[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2025():.