The Fenton reaction is an efficient technology for degrading refractory organic pollutants in water. Heterogeneous Fenton-like catalysts have been demonstrated to be promising alternatives to homogeneous catalysts because of their reusability and lack of sludge production. These catalysts, however, generally show low activity for generating OH due to their limited exposed active sites and difficulty in the reduction of Fe(III) to Fe(II). Here, enhanced catalytic performance was achieved by using an iron-based metal organic framework (MIL-88B-Fe) as a heterogeneous Fenton-like catalyst over a wide pH range (4–6). The catalytic activity of MIL-88B-Fe was about 1–3 orders of magnitude higher than that of three other conventional catalysts (Fe₂O₃, α-FeOOH, and Fe₃O₄) and two other iron-based MOFs (MIL-53-Fe and MIL-101-Fe). The superior activity of MIL-88B-Fe could originate from the abundance of active sites, the flexible structure, and facilitated reduction of Fe(III) to Fe(II). Hydroxyl radicals generated from reaction between MIL-88B-Fe and H₂O₂ were the main reactive oxidative species for phenol degradation.

Fenton反应是降解水中难降解有机污染物的有效技术。已证明非均相类Fenton催化剂是均质催化剂的有前途的替代品，因为它们的可重复使用性和缺乏污泥的产生。然而，这些催化剂由于其有限的暴露的活性位点和通常难以将Fe（III）还原为Fe（II）而显示出低的产生OH的活性。在这里，通过使用铁基金属有机骨架（MIL-88B-Fe）作为广泛的pH范围（4-6）的非均相Fenton状催化剂，可以实现增强的催化性能。MIL-88B-Fe的催化活性比其他三种常规催化剂（Fe ₂ O ₃，α-FeO​​OH和Fe₃ O ₄）和另外两个铁基MOF（MIL-53-Fe和MIL-101-Fe）。MIL-88B-Fe的卓越活性可能来自丰富的活性位点，灵活的结构，并促进了Fe（III）还原为Fe（II）。MIL-88B-Fe与H ₂ O ₂之间的反应产生的羟基自由基是苯酚降解的主要反应性氧化物质。