| 铁基双金属催化剂活化过硫酸盐去除水中抗生素研究进展 |
| 摘要点击 1454 全文点击 438 投稿时间：2022-09-26 修订日期：2022-10-31 |
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| 中文关键词 铁基 双金属 过硫酸盐 驱动机制 降解途径 |
| 英文关键词 iron-based bimetallic persulfate driving mechanism degradation pathways |
| 作者 | 单位 | E-mail | | 魏健 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012
中国环境科学研究院水生态环境研究所, 北京 100012 | weijian0911@163.com | | 张新怡 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012
中国环境科学研究院水生态环境研究所, 北京 100012
北京师范大学水科学研究院, 北京 100875 | 202131470034@mail.bnu.edu.cn | | 郭壮 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012
中国环境科学研究院水生态环境研究所, 北京 100012 | | | 宋永会 | 中国环境科学研究院环境基准与风险评估国家重点实验室, 北京 100012
中国环境科学研究院水生态环境研究所, 北京 100012
北京师范大学水科学研究院, 北京 100875 | |
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| 中文摘要 |
| 近年来,抗生素残留物在多种水体中被普遍检出,对水生态环境和人类健康造成严重威胁.基于活化过硫酸盐高级氧化作用去除水中抗生素污染物,以其氧化性强、选择性高和pH适用范围宽等特点成为研究热点.低成本、高稳定性和催化性能优异的铁基双金属材料能有效活化过硫酸盐,它弥补了单一铁元素活化剂易失活、效率低和容易产生二次污染等缺陷.针对尖晶石铁氧体、铁基层状双金属氢氧化物和铁基普鲁士蓝类似物3种典型铁基双金属催化剂,开展其活化过硫酸盐降解抗生素的研究分析,系统讨论了铁基双金属活化过硫酸盐的几种内在驱动机制,并分别对自由基、单线态氧和高价金属的产生,电子转移和过硫酸盐直接氧化过程进行了梳理.最后,总结了活化过硫酸盐技术处理氟喹诺酮类、磺胺类、四环素类与β-内酰胺类抗生素等4种典型抗生素的一般降解途径,为今后研究铁基双金属催化剂及其改性、衍生物和复合物等在活化过硫酸盐技术中的应用提供参考. |
| 英文摘要 |
| In recent years, antibiotic residues are commonly detected in a variety of water bodies, causing serious threat to water ecosystems and human health. The removal of antibiotic contaminants from water based on the advanced oxidation process of activated persulfate has become a hot research topic due to its strong oxidative properties, high selectivity, and wide pH applicability range. Iron-based bimetallic materials with low cost, high stability, and excellent catalytic performance can effectively activate persulfate, which makes up for the defects of being a single iron activator, such as easy deactivation, low efficiency, and producing secondary pollution easily. Three typical Fe-based bimetallic catalysts, namely spinel ferrite, Fe-based layered double hydroxides, and Fe-based Prussian blue analogues, were investigated and analyzed for their activation of persulfate for antibiotic degradation. Several intrinsic mechanisms of persulfate activation by Fe-based bimetallic catalysts are systematically discussed, including the generation of free radicals, singlet oxygen, and high-valent metals; the process of electron transfer; and the direct oxidation process of persulfate. Finally, the general degradation pathways of four typical antibiotics, including fluoroquinolones, sulfonamides, tetracyclines, and β-lactam antibiotics, are summarized to act as a reference for future studies on the application of Fe-based bimetallic catalysts and their modifications, derivatives, and complexes in the activating technology of persulfate. |
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