A cationic metal-organic framework based on {Zn4} cluster for rapid and selective adsorption of dyes  

作　　者：Weiwei He Na Li Xi Wang Tongliang Hu Xianhe Bu 

机构地区：[1]Department of Chemistry, Nankai University [2]School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University [3]Tianjin Key Laboratory of Metal and Molecule-Based Material Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education),and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University

出　　处：《Chinese Chemical Letters》2018年第6期857-860,共4页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 21371102, 21531005 and 21673120);the Natural Science Foundation of Tianjin (Nos. 16JCZDJC36900 and 15JCZDJC38800)

摘　　要：Until now, to remove the harmful organic dyes from effluents is an outstanding challenge. The design and synthesis of new porous materials capable of selectively adsorbing dyes are critical to the environment and human health. Here, a unique cluster-based cationic metal-organic framework, named{[Zn8（BTA）6（L）5Cl2]·（NO3）3}·5 DMF（NUM-4） was synthesized, which displays one-dimensional（1 D）open channels along a axis in its 3 D supramolecular stacking structure. Benefiting from the nature of cationic framework and high surface area/pore volume, NUM-4 shows rapid and selective adsorption of anionic dyes（MO, AO, CR and MB） based on the charge-exclusive effect. Besides, the adsorbed dyes can be easily released in NH4Cl saturated solution of ethanol.Until now, to remove the harmful organic dyes from effluents is an outstanding challenge. The design and synthesis of new porous materials capable of selectively adsorbing dyes are critical to the environment and human health. Here, a unique cluster-based cationic metal-organic framework, named{[Zn8（BTA）6（L）5Cl2]·（NO3）3}·5 DMF（NUM-4） was synthesized, which displays one-dimensional（1 D）open channels along a axis in its 3 D supramolecular stacking structure. Benefiting from the nature of cationic framework and high surface area/pore volume, NUM-4 shows rapid and selective adsorption of anionic dyes（MO, AO, CR and MB） based on the charge-exclusive effect. Besides, the adsorbed dyes can be easily released in NH4Cl saturated solution of ethanol.

关 键 词：Metal-organic framework SUPERMOLECULE Anionic dyes Adsorption and separation Charge-exclusive effect 

分 类 号：O647.3[理学—物理化学] X703[理学—化学]