Center of Advanced Optoelectronic Materials and Devices, Key Laboratory of Novel Materials for Sensor of Zhejiang Province, College of Materials & Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
Institute of Materials, China Academy of Engineering Physics, Mianyang 621907, China.
Molecules. 2023 Jun 25;28(13):4980. doi: 10.3390/molecules28134980.
Metal-organic frameworks (MOFs) with porosity and functional adjustability have great potential for the removal of organic dyes in the wastewater. Herein, an anionic porous metal-organic framework (MOFs) [MeNH]In[(TATAB)(DMF)]·(DMF)(HO) (HDU-1) was synthesized, which is constructed from a [In(OOC)] cluster and a nitrogen-rich linker HTATAB (4,4',4″--triazine-1,3,5-triyltri--aminobenzoic acid). The negatively charged [In(OOC)] cluster and uncoordinated -COOH on the linker result in one unit cell of HDU-1 having 8 negative sites. The zeta potential of -20.8 mV dispersed in pure water also shows that HDU-1 possesses negatively charged surface potential. The high electronegativity, water stability, and porosity of HDU-1 can facilitate the ion-exchange and Coulombic interaction. As expected, the HDU-1 exhibits high selectivity and removal rates towards trace cationic dyes with suitable size, such as methylene blue (MB) (96%), Brilliant green (BG) (99.3%), and Victoria blue B (VB) (93.6%).
金属-有机骨架（MOFs）具有孔隙率和功能可调性，在去除废水中有机染料方面具有巨大的潜力。在此，合成了一种阴离子多孔金属-有机骨架（MOFs）[MeNH]In[(TATAB)(DMF)]·(DMF)(HO)（HDU-1），它由[In(OOC)]簇和富氮配体 HTATAB（4,4',4″--三嗪-1,3,5-三基三--氨基苯甲酸）构建。带负电荷的[In(OOC)]簇和配体上未配位的-COOH 导致 HDU-1 的一个晶胞具有 8 个负电荷位。在纯水中分散的 zeta 电位为-20.8 mV 也表明 HDU-1 具有带负电荷的表面电位。HDU-1 的高电负性、水稳定性和孔隙率有利于离子交换和库仑相互作用。不出所料，HDU-1 对尺寸合适的痕量阳离子染料（如亚甲蓝（MB）（96%）、灿烂绿（BG）（99.3%）和维多利亚蓝 B（VB）（93.6%））表现出高选择性和去除率。
