A 2D metal-organic framework for selective adsorptions on organic dyes

Removal of organic dyes has become an important issue from the biological and environmental standpoint. A metal-organic framework {[Zn-2(L)(H2O)(DMA)]center dot DMA center dot H2O}(n) (1) (H4L = 9-(3,5-Dicarboxy-benzyl)-9H-carbazole-3,6-dicarboxylic acid, DMA = N, N'-dimethylacetamide) has been synthesized based on a multicarboxylate ligand through solvothermal reaction. Compound 1 has a 2D bilayered structure and exhibits effective adsorption on organic dyes. The adsorbing capacity of MB and MO are 139.6 mg/g and 116.9 mg/g, respectively. The selective adsorption properties on dyes were studied. (C) 2016 Elsevier B.V. All rights reserved.