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Highly effective and fast removal of anionic carcinogenic dyes via an In3-cluster-based cationic metal–organic framework with nitrogen-rich ligand
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2019-11-13 , DOI: 10.1039/c9qm00644c
Xinyao Liu 1, 2, 3, 4, 5 , Bing Liu 1, 2, 3, 4, 5 , Jarrod F. Eubank 6, 7, 8, 9, 10 , Yunling Liu 1, 2, 3, 4, 5
Affiliation  

In this work, highly effective and rapid removal of anionic carcinogenic organic dye molecules is achieved through the use of a novel cationic metal–organic framework (MOF). The MOF is constructed using a nitrogen-rich triangular organic ligand, 4,4′,4′′-s-triazine-1,3,5-triyltri-p-aminobenzoate (H3TATAB), and trinuclear 6-connected In3-cluster secondary building units (SBUs), [In3O(TATAB)2(H2O)3](NO3)·(DMA)15 (In-TATAB), which gives a structure exhibiting a new topology. As the formula indicates, In-TATAB is inherently cationic due to the [In3O(COO)6]+ units, which thus favors interaction with anionic guests. Several organic dye molecules of varying charge and size, such as acid chrome blue K, acid red 26, congo red, direct black 38 and, orange II, were used to test the sequestration potential of the MOF material. In addition to electrostatic attraction, it is shown that hydrogen-bonding originating from the highly functional bridging ligand and terminal H2O ligands enhance the interactions between the framework and guest dye molecules, suggesting its potential use for the removal of anionic organic pollutants.

中文翻译:

通过具有富氮配体的基于In3簇的阳离子金属有机框架高效,快速地去除阴离子致癌染料

在这项工作中,通过使用新型的阳离子金属-有机骨架(MOF),可以高效,快速地去除阴离子致癌有机染料分子。该MOF使用富氮三角形有机配体,4,4',4''构造-小号嗪-1,3,5- triyltri- p -氨基苯甲酸(H 3 TATAB),和三核6连接在3 -群集辅助建筑单元(SBU),[In 3 O(TATAB)2(H 2 O)3 ](NO 3)·(DMA)15In-TATAB),它给出了展现新拓扑的结构。如公式所示,In-TATAB本质上是阳离子由于[在3 O(COO - 6 ] +单位,这有利于从而与阴离子客人相互作用。几种具有不同电荷和大小的有机染料分子,例如酸性铬蓝K,酸性红26,刚果红,直接黑38和橙色II,用于测试MOF材料的螯合潜力。除静电吸引外,还显示出源自高功能桥联配体和末端H 2 O配体的氢键增强了骨架与客体染料分子之间的相互作用,表明其潜在用途可用于去除阴离子有机污染物。
更新日期:2019-11-13
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