A multifunctional microporous metal–organic framework: efficient adsorption of iodine and column-chromatographic dye separation. Issue 63 (26th October 2018) - Yao, Chan
Abstract : JLNU-4 shows excellent uptake of iodine and could selectively adsorb dyes; therefore it can be used for column-chromatographic dye separation. Abstract : In this work, a multifunctional microporous metal–organic framework (MOF), [Cd(ABTC)(H2 O)2 (DMA)]·4DMA (JLNU-4 ; JLNU = Jilin Normal University; H4 ABTC = 3, 3′, 5, 5′-azobenzenetetracarboxylic acid), has been synthesized based on the ligand H4 ABTC under solvothermal conditions.JLNU-4 shows excellent uptake of iodine both in solution and in the vapor phase, owing to the existence of a microporous structure inJLNU-4 . The adsorption kinetics during the process of iodine adsorption were analyzed via a series of qualitative and quantitative analyses, such as the Langmuir and Freündlich adsorption isotherms. In addition, according to UV/vis spectroscopy analysis and the colour variance ofJLNU-4, the relatively small sized dye methylene blue (MB) could be efficiently adsorbed byJLNU-4, through size-exclusion effects. Particularly, JLNU-4 can serve as a column-chromatographic filler for the separation of dye molecules. Therefore, JLNU-4 is a multifunctional microporous MOF for iodine adsorption and column-chromatographic dye separation.