铁基金属-有机骨架及其复合物高级氧化降解水中新兴有机污染物

新兴有机污染物(Emerging organic contaminants,EOCs)是对人体健康及生态环境具有潜在或实质威胁的新型化学污染物。由于其被频繁使用且能在水生生态系统中持久性存在而对水生生物健康和安全造成严重威胁,故引起大众越来越多的关注。以活性污泥法为代表的传统水处理工艺通常不足以消除这些新兴有机污染物。为高效去除新兴有机污染物,基于新材料的高级氧化技术是最主要的深度处理技术之一。铁基金属-有机骨架(Fe-MOFs)及其复合物在诸多领域得到了广泛的应用,特别是在催化氧化去除水中有机污染物方面展现出良好的应用前景。通过合成方法改进、合成后改性以及与特定功能材料复合等方法可有效提升Fe-MOFs及其相关材料的吸附性能、增强其光吸收特性和促进载流子有效分离等。本文重点综述了Fe-MOFs及其复合物高级氧化(光催化、类芬顿和硫酸根自由基($SO_{4}^{-·}$)介导的氧化)去除水中新兴有机污染物的研究进展,并探讨了未来研究所面临的机遇和挑战。

Elimination of Emerging Organic Contaminants in Wastewater by Advanced Oxidation Process Over Iron-Based MOFs and Their Composites

The emergence of emerging organic contaminants(EOCs)has attracted increasing attention due to their wide distribution and persistence in aquatic ecosystems,as well as the potential threat to the health and safety of aquatic organisms.Traditional water treatment processes represented by activated sludge processes are generally insufficient to eliminate these persistent pollutants.For efficient removal of EOCs,advanced oxidation technology based on new materials is one of the most important advanced treatment technologies.Fe-MOFs and their composites have been widely used in many fields,especially in the catalytic oxidation of pollutants in wastewater.With the aid of the improvement of synthesis methods,post-synthetic modification and being composited with specific functional materials,Fe-MOFs can be used to effectively improve the adsorption performance,enhance the light absorption characteristics,and promote the effective separation of charge carriers.The review focuses on the progress of advanced oxidation processes(photocatalysis,Fenton-like reaction and sulfate radical(SO₄^-·)mediated oxidation)of Fe-MOFs and their composites to remove emerging organic contaminants in wastewater.As well,the opportunities and challenges of Fe-MOFs in the field of EOCs removal are proposed.