Ondrušová Soňa, Bůžek Daniel, Kloda Matouš, Rohlíček Jan, Adamec Slavomír, Pospíšil Miroslav, Janoš Pavel, Demel Jan, Hynek Jan
Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Řež 1001, Řež 250 68, Czech Republic.
Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, Prague 128 40, Czech Republic.
Inorg Chem. 2023 Sep 25;62(38):15479-15489. doi: 10.1021/acs.inorgchem.3c01810. Epub 2023 Sep 8.
Metal-organic frameworks (MOFs) are attracting increasing attention as adsorbents of contaminants of emerging concern that are difficult to remove by conventional processes. This paper examines how functional groups covering the pore walls of phosphinate-based MOFs affect the adsorption of specific pharmaceutical pollutants (diclofenac, cephalexin, and sulfamethoxazole) and their hydrolytic stability. New structures, isoreticular to the phosphinate MOF ICR-7, are presented. The phenyl ring facing the pore wall of the presented MOFs is modified with dimethylamino groups (ICR-8) and ethyl carboxylate groups (ICR-14). These functionalized MOFs were obtained from two newly synthesized phosphinate linkers containing the respective functional groups. The presence of additional functional groups resulted in higher affinity toward the tested pollutants compared to ICR-7 or activated carbon. However, this modification also comes with a reduced adsorption capacity. Importantly, the introduction of the functional groups enhanced the hydrolytic stability of the MOFs.
金属有机框架材料（MOFs）作为新兴关注污染物的吸附剂正受到越来越多的关注，这些污染物难以通过传统工艺去除。本文研究了膦酸酯基MOFs孔壁上的官能团如何影响特定药物污染物（双氯芬酸、头孢氨苄和磺胺甲恶唑）的吸附及其水解稳定性。本文还展示了与膦酸酯MOF ICR-7等规的新结构。所展示的MOFs面向孔壁的苯环用二甲氨基（ICR-8）和羧酸乙酯基（ICR-14）进行了修饰。这些功能化的MOFs是由两种新合成的含有相应官能团的膦酸酯连接体得到的。与ICR-7或活性炭相比，额外官能团的存在导致对测试污染物具有更高的亲和力。然而，这种修饰也伴随着吸附容量的降低。重要的是，官能团的引入增强了MOFs的水解稳定性。
