This study presents a facile preparation and durable amorphous Fe and Al-based MOF nanoplate (AlFe-BTC MOFs) catalyst with notable stability in Fenton reactions. Rigorous characterization using XRD, HR-TEM, and BET confirms the amorphous nature of the synthesized AlFe-BTC MOFs, revealing mesopores (3.4 nm diameter), a substantial surface area (232 m²/g), and a pore volume of 0.69 cc/g. XPS analysis delineates distinct Al2p and Fe2p binding energy values, signifying specific chemical bonding. FE-SEM elemental mapping elucidates the distinctive distribution of Fe and Al within the framework of AlFe-BTC MOFs. In catalytic activity testing, the amorphous AlFe-BTC MOFs exhibited outstanding performance, achieving complete degradation of Methylene blue (MB) dye and 78% TOC removal over 45 min of treatment under mild reaction conditions. The catalyst's durability was assessed, revealing about 75% TOC removal and complete dye decomposition over five successive recycles, with less than 1 mg/L of Fe and Al leaching. UV–Vis spectra revealed the destruction of MB dye over multiple recycling studies. Based on this finding, the amorphous AlFe-BTC MOF nanoplates emerge as a promising solution for efficient dye removal from industrial wastewater, underscoring their potential in advanced environmental remediation processes.

Graphical Abstract

中文翻译：

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轻松制备非晶态铝/铁基金属有机骨架作为有效的多相芬顿催化剂用于环境修复

这项研究提出了一种易于制备且耐用的非晶铁和铝基 MOF 纳米板 (AlFe-BTC MOF) 催化剂，在芬顿反应中具有显着的稳定性。使用 XRD、HR-TEM 和 BET 进行的严格表征证实了合成的 AlFe-BTC MOF 的无定形性质，显示出中孔（直径 3.4 nm）、较大的表面积（232 m ² /g）和 0.69 cc 的孔体积/G。 XPS 分析描绘出不同的 Al2p 和 Fe2p 结合能值，表示特定的化学键合。 FE-SEM 元素图阐明了 AlFe-BTC MOF 框架内 Fe 和 Al 的独特分布。在催化活性测试中，非晶态AlFe-BTC MOF表现出出色的性能，在温和的反应条件下，经过45分钟的处理，实现了亚甲基蓝（MB）染料的完全降解和78%的TOC去除。对该催化剂的耐久性进行了评估，结果显示，在五次连续循环中，TOC 去除率约为 75%，染料完全分解，Fe 和 Al 浸出量低于 1 mg/L。紫外-可见光谱揭示了多次回收研究中 MB 染料的破坏。基于这一发现，非晶态 AlFe-BTC MOF 纳米板成为一种有前途的工业废水去除染料解决方案，突显了它们在先进环境修复过程中的潜力。

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