Yao Chan, Wang Wei, Zhang Shu-Ran, Li Hui-Ying, Xu Yan-Hong, Su Zhong-Min, Che Guang-Bo
Key Laboratory of Preparation and Applications of Environmental Friendly Materials, Jilin Normal University, Ministry of Education Changchun 130103 Jilin People's Republic of China
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University Siping 136000 Jilin People's Republic of China.
RSC Adv. 2018 Oct 26;8(63):36400-36406. doi: 10.1039/c8ra04648d. eCollection 2018 Oct 22.
In this work, a multifunctional microporous metal-organic framework (MOF), [Cd(ABTC)(HO)(DMA)]·4DMA (JLNU-4; JLNU = Jilin Normal University; HABTC = 3,3',5,5'-azobenzenetetracarboxylic acid), has been synthesized based on the ligand HABTC 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 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 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.
在本工作中，基于配体3,3',5,5'-偶氮苯四羧酸（HABTC）在溶剂热条件下合成了一种多功能微孔金属有机框架材料（MOF），即[Cd(ABTC)(H₂O)(DMA)]·4DMA（JLNU-4；JLNU = 吉林师范大学；HABTC = 3,3',5,5'-偶氮苯四羧酸）。由于JLNU-4中存在微孔结构，其在溶液和气相中均表现出对碘的优异吸附性能。通过一系列定性和定量分析，如朗缪尔（Langmuir）和弗伦德利希（Freündlich）吸附等温线，对碘吸附过程中的吸附动力学进行了分析。此外，根据紫外/可见光谱分析以及JLNU-4的颜色变化，相对较小尺寸的染料亚甲基蓝（MB）可通过尺寸排阻效应被JLNU-4有效吸附。特别地，JLNU-4可作为柱色谱填料用于染料分子的分离。因此，JLNU-4是一种用于碘吸附和柱色谱染料分离的多功能微孔MOF。
