Super-hydrophobic metal organic framework material as well as preparation method and application thereof

A metal-organic framework and super-hydrophobic technology, which is applied in the field of super-hydrophobic metal-organic framework materials and their preparation, can solve the problems of reducing the specific surface area and surface mass transfer rate of metal-organic framework materials, and achieves good application value and prospect, and is widely used. properties, and the effect of solving poor water stability

Pending Publication Date: 2021-12-03
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, non-porous hydrophobic coatings will reduce the specific surface area and surface mass transfer rate of MOFs

Method used

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  • Super-hydrophobic metal organic framework material as well as preparation method and application thereof
  • Super-hydrophobic metal organic framework material as well as preparation method and application thereof
  • Super-hydrophobic metal organic framework material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The hydrophobic microporous polymer is PIM-1, the metal-organic framework is CuBTC, and the synthesized superhydrophobic metal-organic framework is CuBTC / PIM-1.

[0046]Preparation:

[0047] (1) Synthesis of hydrophobic microporous polymer: 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'- Spiral bisindane (3.404g), tetrafluoroterephthalonitrile (2.001g) and potassium carbonate (3.414g) were added in a three-necked flask, and after nitrogen was passed through for 30min, N-methylpyrrolidone (20mL) and toluene ( 10 mL), then the above mixture was transferred to an oil bath at 160 °C and stirred for 40 min. After the reaction, the obtained viscous liquid was poured into methanol, then stirred and washed with deionized water and acetone, and finally vacuum-dried at 120° C. for 48 hours to obtain a hydrophobic microporous polymer.

[0048] (2) Synthesis of metal-organic framework CuBTC: using the hydrothermal synthesis method commonly used for metal-organic frameworks, co...

Embodiment 2

[0052] The hydrophobic microporous polymer is PIM-1, and the metal-organic framework is UiO-66-NH 2 , the synthesized superhydrophobic metal-organic framework is UiO-66-NH 2 / PIM-1.

[0053] Preparation:

[0054] (1) Synthesis of hydrophobic microporous polymer: 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'- Spiral bisindane (5.106g), tetrafluoroterephthalonitrile (3.002g) and potassium carbonate (5.121g) were added in a three-necked flask, and after nitrogen was passed through for 40min, N-methylpyrrolidone (30mL) and toluene ( 15 mL), then the above mixture was transferred to an oil bath at 150 °C and stirred for 40 min. After the reaction, the obtained viscous liquid was poured into methanol, then stirred and washed with deionized water and acetone, and finally vacuum-dried at 110° C. for 36 hours to obtain a hydrophobic microporous polymer.

[0055] (2) Metal organic framework UiO-66-NH 2 Synthesis of: Using the hydrothermal synthesis method commonly used in metal...

Embodiment 3

[0058] The hydrophobic microporous polymer is PIM-1, the metal organic framework is MIL-101, and the synthesized superhydrophobic metal organic framework is MIL-101 / PIM-1.

[0059] Preparation:

[0060] (1) Synthesis of hydrophobic microporous polymer: 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'- Spiral bisindane (6.808g), tetrafluoroterephthalonitrile (4.002g) and potassium carbonate (8.28g) were added in a three-necked flask, and after passing through nitrogen for 50min, N-N dimethylformamide (40mL) was added, followed by The above mixture was transferred to an oil bath at 170 °C and stirred for 40 min. After the reaction, the obtained viscous liquid was poured into methanol, then stirred and washed with deionized water and acetone, and finally vacuum-dried at 110° C. for 36 hours to obtain a hydrophobic microporous polymer.

[0061] (2) Synthesis of metal-organic framework MIL-101: using the hydrothermal synthesis method commonly used for metal-organic frameworks, w...

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Abstract

The invention belongs to the technical field of novel functional materials, and discloses a super-hydrophobic metal organic framework material as well as a preparation method and application thereof. The method comprises the following steps: dissolving a hydrophobic microporous polymer in a solvent to obtain a microporous polymer solution, and then adding metal organic framework particles into the microporous polymer solution to obtain the super-hydrophobic metal organic framework material with the hydrophobic microporous polymer coating. The hydrophobic coating is constructed on the surface of the metal organic framework material through a simple and efficient coating method, and the problem that the water stability of the metal organic framework material is poor is solved. The ultrathin microporous polymer coating not only significantly improves the hydrophobic property of the metal organic framework material, but also can maintain the original pore structure and specific surface area of the metal organic framework material due to the porous characteristic of the ultrathin microporous polymer coating. The method disclosed by the invention has wide universality, can be suitable for various metal organic framework materials, and has good application value and prospect.

Description

technical field [0001] The invention belongs to the technical field of new functional materials, and mainly provides a superhydrophobic metal-organic framework material, a preparation method and application thereof. Background technique [0002] In recent years, metal-organic frameworks, as a porous crystalline material coordinated by metal ions or metal clusters and organic linkers, have shown many properties such as simple synthesis methods, large specific surface area, unique porous structure and Chemical diversity, etc., are widely used in gas storage, molecular separation, catalysis, energy storage, and biomedicine. The functions and applications of MOFs are closely related to their inherent physical and chemical properties. Most metal-organic framework materials face the bottleneck of water sensitivity, poor acid and alkali resistance, and weak processability, such as CuBTC, MOF-5, MIL-53, etc., when they are in a humid environment or exposed to air for a long time ,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12C08G83/00C08G65/40C08L87/00
CPCC08J3/126C08G83/008C08G65/4006C08J2387/00
Inventor 李万斌容斯毅苏鹏程
Owner JINAN UNIVERSITY
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