In this study, the synthesized CuCo-zeolitic imidazolate framework (ZIF) catalyst was used to degrade methyl orange (MO) and methylene blue (MB) in water via a novel Fenton-like catalytic reaction. Effects of catalyst dosage, H 2 O 2 concentration, initial concentration of the contaminants, and reaction time were evaluated. The results showed that MO and MB decomposition efficiencies were highly influenced by CuCo-ZIF concentration. The presence of H 2 O 2 accelerated the degradation reaction of both MO and MB. Although it took 100 min to complete the removal of MB, it was 60 min for MO. At concentrations of MO and MB lower than 40 mg·L −1 , the catalyst showed an almost complete degradation. The CuCo-ZIF catalyst presented a good recyclability with more than 90% removal of MO and MB after four times and five times reuse, respectively. These results demonstrated that MO and MB were efficiently degraded by a Fenton-like catalyst of CuCo-ZIFs and its potential in industrial wastewater treatment. Graphical abstract

中文翻译：

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CuCo-ZIFs类芬顿催化剂高效降解水溶液中的甲基橙和亚甲蓝

在这项研究中，合成的 CuCo-沸石咪唑骨架 (ZIF) 催化剂通过一种新型的类 Fenton 催化反应用于降解水中的甲基橙 (MO) 和亚甲蓝 (MB)。评估了催化剂用量、H 2 O 2 浓度、污染物初始浓度和反应时间的影响。结果表明，MO和MB的分解效率受CuCo-ZIF浓度的影响很大。H 2 O 2 的存在加速了MO和MB的降解反应。虽然完成删除 MB 需要 100 分钟，但对于 MO 来说是 60 分钟。在MO和MB的浓度低于40 mg·L -1 时，催化剂几乎完全降解。CuCo-ZIF催化剂表现出良好的可回收性，经过四次和五次重复使用后，MO和MB的去除率分别超过90%。这些结果表明，CuCo-ZIFs 的类 Fenton 催化剂可有效降解 MO 和 MB，并具有在工业废水处理中的潜力。图形概要