MOF (Metal Organic Framework) porous adsorption material as well as preparation method and application thereof

A porous adsorption material and porous material technology, applied in the field of MOF porous adsorption material and its preparation, can solve the problems of poor adsorption efficiency of low-concentration iodine, high cost of precious metals, and susceptibility to humidity interference, etc., to achieve abundant reserves, controllable cost, The effect of high structural stability
CN114405482APending Publication Date: 2022-04-29SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2022-04-29

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Abstract

The invention belongs to the technical field of complex application, and discloses an MOF (Metal Organic Framework) porous adsorption material, a preparation method thereof and application of the MOF porous adsorption material in the aspects of efficiently adsorbing iodine vapor and capturing iodine molecules in an iodine aqueous solution. The MOF iodine adsorption material is prepared through solvothermal reaction of lead ions and 5-(4-pyridine) isophthalic acid (pi), the chemical formula is [Pb2 (pia) 2 (DMA)]. DMA, the compound is of a column-chain structure, Pb < 2 + > ions and ligand carboxylic acid groups form a defective double-cube alkane [Pb4O6]-based metal carboxyl chain, and the defect double-cube alkane [Pb4O6]-based metal carboxyl chain is used for adsorbing iodine. Adjacent chains are expanded into a three-dimensional porous network structure with a square window one-dimensional nano pore channel through pia ligands which are arranged in parallel. The MOF can be used for efficiently capturing iodine vapor and iodine molecules in an aqueous solution after being replaced with a low-boiling-point solvent and subjected to heating, vacuumizing and activating treatment, and the material keeps high structural stability in the iodine adsorption process.
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Description

technical field

[0001] The invention belongs to the technical field of complex applications, and in particular relates to a MOF porous adsorption material and its preparation method and application. Background technique

[0002] Nuclear power is efficient and clean, with low carbon emissions and stable supply. Further developing safe and green nuclear power and steadily expanding the proportion of nuclear energy in the entire energy supply is in line with the country's sustainable development and "carbon neutral" strategy. However, a large number of radioactive products are generated in the process of nuclear power production, and most nuclear power units are located in economically developed and densely populated areas. It is necessary and urgent to develop new materials to achieve efficient treatment of radioactive pollutants produced by nuclear power for the further development and promotion of nuclear power. Radioactive iodine accounts for more than 30% of the early fiss...

Claims

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