Abstract Prussian blue analogues (PBAs) have gained extensive attention for peroxymonosulfate (PMS) activation. However, the poor recovery ability of PBAs has limited their practical applications. In this work, PBA was firstly immobilized using zeolitic imidazolate framework-8 (ZIF-8) via a facile in-situ growth method. The decoration of PBA onto the surface of ZIF-8 was well confirmed by TEM, XRD, FTIR and XPS. The catalytic efficiency of the PBA-ZIF8 composite was significantly higher than that of pure PBA and ZIF-8 on the activation process of peroxymonosulfate when rhodamine B (RhB) was employed as a target contaminant. RhB degradation efficiency was effectively promoted at relatively high PBA-ZIF8 dosage and PMS concentration, as well as in near-neutral pH medium. Sulphate radicals obviously played a predominant role in attacking RhB during the whole reaction. In addition, PBA-ZIF8 also possessed good stability and reusability with negligible cobalt leaching. Therefore, the PBA-ZIF8 composite was a conveniently prepared and promising catalyst that may be employed to remediate contaminated water due to its excellent catalytic activity and recyclability.

中文翻译：

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沸石咪唑酯骨架负载的普鲁士蓝类似物作为有效的类芬顿催化剂活化过硫酸盐

摘要 普鲁士蓝类似物 (PBA) 在过硫酸盐 (PMS) 活化方面受到广泛关注。然而，PBAs 较差的恢复能力限制了它​​们的实际应用。在这项工作中，PBA 首先通过简单的原位生长方法使用沸石咪唑酯骨架-8 (ZIF-8) 进行固定。TEM、XRD、FTIR 和 XPS 证实了 PBA 在 ZIF-8 表面的修饰。当采用罗丹明 B (RhB) 作为目标污染物时，PBA-ZIF8 复合材料对过硫酸盐活化过程的催化效率显着高于纯 PBA 和 ZIF-8。RhB 降解效率在相对较高的 PBA-ZIF8 剂量和 PMS 浓度下以及在接近中性的 pH 介质中得到有效促进。在整个反应过程中，硫酸根显然在攻击 RhB 中起主导作用。此外，PBA-ZIF8 还具有良好的稳定性和可重复使用性，钴浸出可忽略不计。因此，PBA-ZIF8 复合材料是一种制备方便且有前景的催化剂，由于其优异的催化活性和可回收性，可用于修复受污染的水。