A new azo metal-organic framework showing polycatenated 3D array and ultrahigh U(VI) removal

作者：Tao, Yuan; Yang, Li Xiao; Li, Jian Hong; Feng, Xue Feng; Yin, Wen Hui; Wu, Hui Qiong; Li, Jian Qiang; Luo, Feng^*

来源：Journal of Solid State Chemistry, 2018, 266: 244-249.

DOI：10.1016/j.jssc.2018.07.027

• Metal-organic framework
• Amide groups
• U(VI) adsorption

Herein we report a novel azo metal-organic framework (MOF), namely Zn-2(DMF)(ADC)(2)(L)(0.5) (ECUT-100, H(2)ADC=azobenzene-4,4'-dicarboxylic acid, L=N, N'-di(pyridin-4-yl)naphthalene-1,4-dicarboxamide), showing a polycatenated 3D array of interlaced 2D bilayers. Without any pre-treatment the as-synthesized ECUT-100 samples effectively adsorb U(VI), leading to the ultrahigh adsorption capacity up to 381 mg/g. This value is greatly higher than that observed in most established porous adsorbents. The origin is primarily due to the free standing azo and amide groups from ADC(2-) and L ligands that may provide special interactions with U(VI) ions.

• 出版日期2018-10