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

作者：He, Weiwei; Li, Na; Wang, Xi; Hu, Tongliang^*; Bu, Xianhe

来源：Chinese Chemical Letters, 2018, 29(6): 857-860.

DOI：10.1016/j.cclet.2017.10.003

• Metal-organic framework
• Supermolecule
• Anionic dyes
• Adsorption and separation
• Charge-exclusive effect

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 ([Zn-8(BTA)(6)(L)(5)Cl-2]center dot(NO3)(3)}center dot 5DMF (NUM-4) was synthesized, which displays one-dimensional (1D) open channels along a axis in its 3D 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.

• 出版日期2018-6
• 单位南开大学