The development of covalent organic frameworks (COFs) which can rapidly degrade high concentrations of 2,4-dichlorophenol is of great significance for its practical application. In this work, we report a cobalt-doped two-dimensional (2D) COF (JLNU-307-Co) for the ultra-efficient degradation of high concentration 2,4-dichlorophenol (2,4-DCP) by activating peroxymonosulfate (PMS). JLNU-307-Co/PMS system takes only 3 min to degrade 100% of 50 mg/L 2,4-DCP and shows excellent catalytic stability in real water. The superoxide radical (O₂^•−) and singlet oxygen (¹O₂) play a major role in the system through capture experiments and electron spin resonance (ESR) tests. Compared to most previously reported catalysts, JLNU-307-Co/PMS showed the highest efficiency to date in degrading 2,4-DCP. This work not only demonstrates the potential of COFs as a catalyst for water environmental treatment, but also provides unprecedented insights into the degradation of organic pollutants.

中文翻译：

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钴修饰的共价有机框架可通过过一硫酸盐活化高效降解高浓度的 2,4-二氯苯酚


开发能够快速降解高浓度2,4-二氯苯酚的共价有机框架（COF）对其实际应用具有重要意义。在这项工作中，我们报道了一种钴掺杂的二维（2D）COF（JLNU-307-Co），可通过激活过一硫酸盐（PMS）超高效降解高浓度2,4-二氯苯酚（2,4-DCP） ）。 JLNU-307-Co/PMS系统仅需3分钟即可100%降解50 mg/L 2,4-DCP，并在实际水中表现出优异的催化稳定性。通过捕获实验，超氧自由基（O ₂ ^•− ）和单线态氧（ ¹ O ₂ ）在系统中起主要作用和电子自旋共振（ESR）测试。与大多数先前报道的催化剂相比，JLNU-307-Co/PMS 在降解 2,4-DCP 方面表现出迄今为止最高的效率。这项工作不仅展示了COF作为水环境处理催化剂的潜力，而且为有机污染物的降解提供了前所未有的见解。