A multifunctional microporous metal-organic framework: efficient adsorption of iodine and column-chromatographic dye separation

作者：Yao, Chan; Wang, Wei; Zhang, Shu-Ran; Li, Hui-Ying; Xu, Yan-Hong^*; Su, Zhong-Min; Che, Guang-Bo^*

来源：RSC Advances, 2018, 8(63): 36400-36406.

DOI：10.1039/c8ra04648d

• FRIEDEL-CRAFTS ALKYLATION
• 3D COORDINATION NETWORK
• SELECTIVE CO2 UPTAKE
• HIGHLY EFFICIENT
• VOLATILE IODINE
• SINGLE-CRYSTAL
• ELECTRICAL-CONDUCTIVITY
• RADIOACTIVE IODINE
• RAPID ADSORPTION
• LN(3+) CATIONS

In this work, a multifunctional microporous metal-organic framework (MOF), [Cd(ABTC)(H2O)(2)(DMA)]4DMA (JLNU-4; JLNU = Jilin Normal University; H(4)ABTC = 3,3,5,5-azobenzenetetracarboxylic acid), has been synthesized based on the ligand H(4)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 in JLNU-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 Freundlich adsorption isotherms. In addition, according to UV/vis spectroscopy analysis and the colour variance of JLNU-4, the relatively small sized dye methylene blue (MB) could be efficiently adsorbed by JLNU-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.

• 出版日期2018
• 单位东北师范大学; 吉林师范大学