芳香族二羧酸锰基金属有机骨架的构建及其在碘吸附中的应用

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Main Group Chemistry Pub Date : 2022-01-24 DOI:10.3233/mgc-210178

Mingshan Sun, Ying Wang, F. Bai, Y. Xing

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引用次数: 0

摘要

本研究以对苯二甲酸或2-氨基对苯二甲酸为配体，在溶剂热条件下以过渡金属锰盐为金属源，成功构建了Mn3(BDC)3(H2O)2(1)和Mn3(NH2-BDC)3(DMF)4 (2) (H2BDC =对苯二甲酸;NH2-BDC = 2氨基对苯二甲酸;DMF = N, N-二甲基甲酰胺)。通过元素分析、红外光谱、热重分析(TG)、x射线粉末衍射(PXRD)和紫外-可见吸收光谱对其进行了表征。结果发现，化合物1和2的填充结构均由三核Mn3O16积木块构成，且表现出不同的空间结构:化合物1为三维结构，而化合物2为二维网络结构。研究了化合物1和2在环己烷溶液中的碘吸附性能。研究结果表明，框架化合物结构中的不配位氨基对碘吸附能力影响较大，化合物2具有良好的吸附性能和可重复使用性。

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Construction of manganese-based metal organic frameworks derived from aromatic dicarboxylic acids and application for the adsorption of iodine

In this work, we selected terephthalic acid or 2-amino-terephthalic acid as ligand, transition metal manganese salt as metal source under the solvothermal conditions to successfully construct two kinds of manganese-based metal-organic frameworks (Mn-MOFs): Mn3(BDC)3(H2O)2 (1) and Mn3(NH2-BDC)3(DMF)4 (2) (H2BDC = terephthalic acid; NH2-BDC = 2-amino terephthalic acid; DMF = N, N-dimethyl formamide). It was characterized by elemental analysis, IR spectrum, thermogravimetric analysis (TG), X-ray powder diffraction (PXRD) and UV-vis absorption spectrum. It was found that the packing structures of compounds 1 and 2 were constructed by the trinuclear Mn3O16 building block and exhibited different spatial structure: compound 1 was a three-dimensional structure, and 2 was a two-dimensional network structure. The iodine adsorption in cyclohexane solution properties of compounds 1 and 2 were investigated. Research results showed that the uncoordinated amino group in the structure of framework compounds has a great influence on the iodine adsorption capacity and compound 2 had good adsorption property and reusability.

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来源期刊

Main Group Chemistry 化学-化学综合

CiteScore

2.00

自引率

26.70%

发文量

审稿时长

>12 weeks

期刊介绍： Main Group Chemistry is intended to be a primary resource for all chemistry, engineering, biological, and materials researchers in both academia and in industry with an interest in the elements from the groups 1, 2, 12–18, lanthanides and actinides. The journal is committed to maintaining a high standard for its publications. This will be ensured by a rigorous peer-review process with most articles being reviewed by at least one editorial board member. Additionally, all manuscripts will be proofread and corrected by a dedicated copy editor located at the University of Kentucky.