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Dual-organic-ligand MOF, preparation method of dual-organic-ligand MOF, dual-organic-ligand charged MOF and preparation method of dual-organic-ligand charged MOF

An organic ligand, charged technology, applied in dual organic ligand charged MOF and its preparation, dual organic ligand MOF and its preparation field, can solve environmental and human health hazards, complex problems, etc., achieve high ratio surface area, enhancing the effect of adsorption

Active Publication Date: 2018-02-23
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the complex aromatic structure of the dye and its light, heat and oxidation stability, it causes great harm to the environment and human health

Method used

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  • Dual-organic-ligand MOF, preparation method of dual-organic-ligand MOF, dual-organic-ligand charged MOF and preparation method of dual-organic-ligand charged MOF
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  • Dual-organic-ligand MOF, preparation method of dual-organic-ligand MOF, dual-organic-ligand charged MOF and preparation method of dual-organic-ligand charged MOF

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preparation example Construction

[0049] The invention provides a kind of preparation method of double organic ligand MOF, comprises the following steps:

[0050] 1) After mixing the phthalic acid organic ligand source, the pyridinedicarboxylic acid organic ligand source, the mineralizer, the soluble metal salt and the organic solvent, react to obtain the double organic ligand MOF.

[0051] The selection range and optimization principles of the materials or structures in the preparation method in the present invention are consistent with the selection ranges and optimization principles of the materials or structures in the aforementioned double organic ligand MOF, and will not be repeated here.

[0052] The present invention has no special restrictions on the selection of the source of the phthalic acid organic ligand, and the source of the conventional phthalic acid organic ligand well known to those skilled in the art can be used. And product requirements are selected and adjusted, the phthalic acid organic ...

Embodiment 1

[0086] 1.1 Preparation of double organic ligand MOF

[0087] Dissolve 0.14g of 2-aminoterephthalic acid, 0.04g of 2,5-pyridinedicarboxylic acid, 0.66g of acetic acid and 0.24g of zirconium tetrachloride in 20mL of N,N-dimethylformamide, and then dissolve the above solution Pour it into a polytetrafluoroethylene reaction kettle with a metal shell, put it into a muffle furnace at a temperature of 120°C and react for 24 hours to obtain a light yellow double organic ligand MOF.

[0088] 1.2 Charging reaction of double organic ligand MOF

[0089] Put the dual organic ligand MOF obtained in step 1.1 into 15ml of double liquid containing 1mL of methyl iodide and water, the volume ratio of methyl iodide to water is 1:14, and react at 30°C for 24h, The MOF is taken out, rinsed with water, and dried to obtain a double organic ligand charged MOF.

[0090] see figure 1 , figure 1 It is a schematic flow chart of the preparation process of the double organic ligand charged MOF provided ...

Embodiment 2

[0099] 2.1 Preparation of double organic ligand MOF

[0100] Dissolve 0.16g of 2-aminoterephthalic acid, 0.06g of 2,5-pyridinedicarboxylic acid, 0.70g of acetic acid and 0.12g of zirconium nitrate in 20mL of N,N-dimethylformamide, and pour the above solution into A polytetrafluoroethylene reaction kettle with a metal shell was placed in a muffle furnace at a controlled temperature of 120°C to react for 24 hours to obtain a light yellow double organic ligand MOF.

[0101] 2.2 Charging reaction of double organic ligand MOF

[0102] Put the dual organic ligand MOF obtained in step 2.1 into 15ml of double liquid containing 1mL of methyl iodide and water, the volume ratio of methyl iodide to water is 1:14, and react at 35°C for 24h, The MOF is taken out, rinsed with water, and dried to obtain a double organic ligand charged MOF.

[0103] Performance testing was performed on the double organic ligand charged MOF prepared in Example 2 of the present invention.

[0104] 2.3 Adsorpt...

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Abstract

The invention provides a dual-organic-ligand MOF, the MOF structurally comprises two different organic ligands with dicarboxylic structures; and the two different organic ligands with the dicarboxylicstructures comprise a phthalic acid organic ligand and a dipicolinic acid organic ligand. The structure of the provided dual-organic-ligand MOF comprises two different organic ligands, different organic ligands in the framework have different chemical functional groups, a chemical formula having an amino structure and a pyridine structure is obtained, the framework structure is charged due to thetwo organic ligands with two different chemical functional groups, the limit of the neutral framework of the MOF is broken, in addition to the fact that the positively charged framework structure with a high specific surface area shows the characteristic of the high specific surface area in the adsorption process, the MOF having different functional groups and the charged framework structure strengthens the adsorption effect in the dye wastewater, and has a better effect on adsorbing charged substances like an anionic dye.

Description

technical field [0001] The invention relates to the technical field of metal-organic framework compound nanomaterials, and relates to a double organic ligand MOF and a preparation method thereof, a double organic ligand charged MOF and a preparation method thereof. Background technique [0002] Metal-organic frameworks (Metal-Organic Frameworks), referred to as MOFs, are organic-inorganic hybrid materials with intramolecular pores formed by the self-assembly of organic ligands and metal ions or clusters through coordination bonds. Multifunctional molecular-based framework materials, because of their organic-inorganic hybrid characteristics, structural order and controllability, microporosity, special optical, electrical, magnetic properties and potential applications in industry, have become new functional materials at present. A hotspot in the field of materials research. MOF materials are mainly divided into IRMOF series, ZIF series, CPL series, MIL series, PCN series and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00
CPCC08G83/008
Inventor 徐铜文伍斌葛亮王鑫徐婷婷
Owner UNIV OF SCI & TECH OF CHINA
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