A novel porous anionic metal-organic framework with pillared double-layer structure for selective adsorption of dyes

作者：Sheng, Shu-Nan; Han, Yi; Wang, Bin; Zhao, Cui; Yang, Fan; Zhao, Min-Jian; Xie, Ya-Bo^*; Li, Jian-Rong^*

来源：Journal of Solid State Chemistry, 2016, 233: 143-149.

DOI：10.1016/j.jssc.2015.10.022

• Anionic metal-organic framework
• Pillared double-layer structure
• Selective adsorption of dyes

A novel porous anionic metal-organic framework, (Me2NH2)(2)[Zn(2)L(1.5)bpy]center dot 2DMF (BUT-201; H4L=4,8-disulfonaphthalene-2,6-dicarboxylic acid; bpy=4,4-bipyridine; DMF=N,N-dimethylformamide), with pillared double-layer structure has been synthesized through the reaction of a sulfonated carboxylic acid ligand and Zn(NO3)2 center dot 6H(2)O with 4,4-bipyridine as a co-ligand. It is found that BUT-201 can rapidly adsorb cationic dyes with a smaller size such as Methylene Blue (MB) and Acriflavine Hydrochloride (AH) by substitution of guest (CH3)(2)NH2+, but has no adsorption towards the cationic dyes with a lager size such as Methylene Violet (MV), the anionic dyes like C. I. Acid Yellow 1 (AY1) and neutral dyes like C. I. Solvent Yellow 7 (SY7), respectively. The results show that the adsorption behavior of BUT-201 relates not only to the charge but also to the size/shape of dyes. Furthermore, the adsorbed dyes can be gradually released in the methanol solution of LiNO3.

• 出版日期2016-1
• 单位北京工业大学