Metal–organic cages, a class of supramolecular containers constructed by the self-assembly of metal ions and organic ligands, show great promise as catalytic agents. In this work, we designed and synthesized a series of rhombic dodecahedral Ni–Cu heterometal imidazolate cages (Ni₈Cu₆L₂₄) that can act as highly active photo-Fenton-like catalysts. These cages possess a high ability to generate hydroxyl radicals (^•OH) under visible light in the presence of H₂O₂, which can rapidly degrade organic pollutants (e.g., rhodamine B, methylene blue, and methyl orange) into CO₂ and H₂O. Besides, they are robust catalysts, with high catalytic activity and reusability under conditions in high H₂O₂ concentration, providing potentially advanced materials for degrading persistent organic pollutants.

中文翻译：

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异金属有机笼作为光芬顿类催化剂

金属-有机笼是一类由金属离子和有机配体自组装构成的超分子容器，作为催化剂显示出巨大的潜力。在这项工作中，我们设计并合成了一系列菱形十二面体Ni-Cu异金属咪唑盐笼（Ni ₈ Cu ₆ L ₂₄），可作为高活性的类光芬顿催化剂。这些笼子在可见光下在 H ₂ O ₂存在下具有很强的产生羟基自由基 ( ^• OH) 的能力，可以快速将有机污染物（如罗丹明 B、亚甲蓝和甲基橙）降解为 CO ₂和 H ₂O. 此外，它们是强大的催化剂，在高 H ₂ O ₂浓度条件下具有高催化活性和可重复使用性，为降解持久性有机污染物提供了潜在的先进材料。