Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193, Barcelona, Spain.
Departament de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
Chemistry. 2022 Jun 1;28(31):e202200357. doi: 10.1002/chem.202200357. Epub 2022 Apr 22.
Water pollution threatens human and environmental health worldwide. Thus, there is a pressing need for new approaches to water purification. Herein, we report a novel supramolecular strategy based on the use of a metal-organic polyhedron (MOP) as a capture agent to remove nitrogenous organic micropollutants from water, even at very low concentrations (ppm), based exclusively on coordination chemistry at the external surface of the MOP. Specifically, we exploit the exohedral coordination positions of Rh -MOP to coordinatively sequester pollutants bearing N-donor atoms in aqueous solution, and then harness their exposed surface carboxyl groups to control their aqueous solubility through acid/base reactions. We validated this approach for removal of benzotriazole, benzothiazole, isoquinoline, and 1-napthylamine from water.
水污染威胁着全世界人类和环境的健康。因此，迫切需要新的水净化方法。在此，我们报告了一种基于使用金属有机多面体（MOP）作为捕获剂的新型超分子策略，该策略用于从水中去除含氮有机微量污染物，即使在非常低的浓度（ppm）下也能去除，这完全基于 MOP 外表面的配位化学。具体来说，我们利用 Rh-MOP 的外接配位位置在水溶液中配位隔离含 N 供体原子的污染物，然后利用其暴露的表面羧基基团通过酸碱反应来控制其水溶解度。我们通过从水中去除苯并三唑、苯并噻唑、异喹啉和 1-萘胺来验证这种方法。
