Antibiotics have garnered global attention as a pressing concern due to their wide spread discharge to the environment and resulting significant threats to both human health and the environment. The Sulfate Radical-based Advanced Oxidation Processes (SR-AOPs) technique has already been verified as an effective process for pollutant degradation. Herein, FeS@CoO-C composites, utilizing ZIF-67-derived CoO-C as the substrate material, were fabricated using a single-step solvothermal technique for the degradation of tetracycline (TC) by activated peroxymonosulfate (PMS) in combination with visible light irradiation. In the FeS@CoO-C/PMS/Vis system, the FeS@CoO-C showed better activation performance than the single chemical activation system or photocatalytic system, with 97.2 % TC removed in 20 min. The FeS@CoO-C composite material was thoroughly investigated employing X-ray diffraction (XRD) for analyzing its crystal structure, transmission electron microscopy (TEM) for detailed structural insights, scanning electron microscopy (SEM) for morphological examination, and X-ray photoelectron spectroscopy (XPS) for the elemental valence states. The quenching experiments, along with EPR test, revealed that the primary active oxygen species consisted of O, O, and h. The results presented here suggest the impressive stability and recyclability of FeS@CoO-C making it a potential candidate as an efficient catalyst for initiating the activation of PMS in degrading persistent organic pollutants present in water.

中文翻译：

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FeS2@Co3O4-C 催化剂和可见光双重活化过一硫酸盐高效降解四环素


由于抗生素广泛排放到环境中并对人类健康和环境造成重大威胁，抗生素已成为全球关注的紧迫问题。基于硫酸盐自由基的高级氧化工艺（SR-AOP）技术已被证实是一种有效的污染物降解工艺。在此，利用单步溶剂热技术制备了 FeS@CoO-C 复合材料，利用 ZIF-67 衍生的 CoO-C 作为基材，通过活化的过一硫酸盐 (PMS) 与可见光相结合来降解四环素 (TC)。光照射。在FeS@CoO-C/PMS/Vis系统中，FeS@CoO-C表现出比单一化学活化系统或光催化系统更好的活化性能，20分钟内去除了97.2%的TC。采用 X 射线衍射 (XRD) 分析其晶体结构、透射电子显微镜 (TEM) 详细了解结构、扫描电子显微镜 (SEM) 进行形态检查以及 X 射线对 FeS@CoO-C 复合材料进行了彻底研究元素价态的光电子能谱 (XPS)。猝灭实验和 EPR 测试表明，主要活性氧物种由 O、O 和 h 组成。这里提出的结果表明 FeS@CoO-C 具有令人印象深刻的稳定性和可回收性，使其成为启动 PMS 降解水中持久性有机污染物的有效催化剂的潜在候选者。