单线态氧
催化作用
对偶(语法数字)
光化学
降级(电信)
氧原子
Atom(片上系统)
单重态
化学
氧气
物理
有机化学
原子物理学
激发态
电气工程
分子
计算机科学
工程类
艺术
文学类
嵌入式系统
作者
Yingjie Zhang,Jing Zhang,Jiming Hao,Qiang Ma,Yijie Meng,Ruiqi Zhai,Kezhen Qi,Dongtao Wang,Ziyi Li
出处
期刊:Nano Research
[Springer Science+Business Media]
日期:2024-06-01
卷期号:18 (6): 94907495-94907495
被引量:11
标识
DOI:10.26599/nr.2025.94907495
摘要
The efficient degradation of antibiotics in wastewater is critical for addressing global water pollution challenges. Herein, we report a dual-atom Fe-Co catalyst anchored on a nitrogen-doped carbon matrix (FeCo/NC), which demonstrates superior performance in peroxymonosulfate (PMS) activation and tetracycline (TC) degradation. This system achieves a remarkable 91.2% TC removal efficiency, significantly outperforming single-atom catalysts. Mechanistic investigations reveal that FeCo/NC induces a unique spin-state reconstruction, optimizing its electronic structure and shifting the oxidative mechanism from a radical-driven pathway to a singlet oxygen (1O2)-dominated nonradical process. Theoretical insights from density functional theory (DFT) calculations confirm the preferred 1O2 generation pathway at FeCo active sites, with reduced energy barriers that enhance catalytic activity. Toxicological evaluations validate that TC degradation intermediates exhibit minimal ecological risks, reinforcing the environmental safety of this approach. The long-term stability of the FeCo/NC/PMS system was evaluated via a continuous-flow photocatalytic reactor, the above results reflect the superior catalytic activity and stability of the FeCo/NC/PMS system. This work establishes a paradigm for designing advanced dual-atom catalysts and provides critical insights for developing eco-friendly solutions to antibiotic-contaminated wastewater treatment.
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