ZnFe layered double hydroxide wrapped metal-organic framework derived cobalt-nitrogen-doped carbon material as peroxymonosulfate activator for ciprofloxacin degradation

文献类型： 外文期刊

第一作者： Zhang, Haiqing

作者： Zhang, Haiqing;Qi, Xinhua;Smith Jr, Richard Lee;Shen, Feng

作者机构：

关键词： Water pollution; Antibiotic waste mitigation; Catalysis; Carbon-based catalyst; Antibiotic decomposition kinetics

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.3； 五年影响因子：13.2 ）

ISSN： 1385-8947

年卷期： 2024 年 496 卷

页码：

收录情况： SCI

摘要： ZnFe layered double hydroxide (ZnFe-LDH) wrapped metal-organic framework derived cobalt and nitrogendoped carbon-based materials (ZnFe-LDH@CoNC) were synthesized. The fabricated nanocomposites exhibited uniform distribution of ZnFe-LDH-3 on CoNC matrix. Degradation efficiency of ciprofloxacin (CIP, 10 mg/L) in the peroxymonosulfate (PMS)-containing catalytic system reached up to 98.5% at a dosage of 0.2 g/L ZnFe-LDH3@CoNC and 0.4 g/L PMS at a reaction time of 30 min at 25 degrees C. The ZnFe-LDH-3@CoNC/PMS catalytic system was found to act as a pH buffer and it exhibited more stable activity in cyclic tests compared with the CoNC/PMS catalytic system. Quenching experiments and EPR analyses showed that 1O2 was the primary reactive species in the ZnFe-LDH-3@CoNC/PMS catalytic system. Degradation intermediate products of CIP were identified and a potential degradation mechanism was suggested. The ZnFe layered double hydroxide wrapped metal-organic framework advances methods in environmental catalyst design and simultaneously improves active metal for PMS activation.

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