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A kind of preparation method of monolithic material with hierarchical porous structure

A technology of monolithic materials and multi-level pores, applied in the field of preparation of multi-level porous monolithic materials, can solve the problems that materials do not have remodeling properties, restrict the practical application of materials, etc., and achieve the effect of promoting application and easy multi-level pore size.

Active Publication Date: 2020-12-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the existing preparation technology, the obtained covalent organic polymers often exist in the form of powder, and the material is not remodelable, which seriously restricts the practical application of the material

Method used

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  • A kind of preparation method of monolithic material with hierarchical porous structure
  • A kind of preparation method of monolithic material with hierarchical porous structure
  • A kind of preparation method of monolithic material with hierarchical porous structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Add 50.0 mg of POSS-epoxy reagent to the centrifuge tube.

[0024] 2. Add 54.0 mg of PEI aqueous solution to the above centrifuge tube.

[0025] 3. Add 25 mg PEG, 280 μL n-propanol and 40 μL 1,4-butanediol to the above centrifuge tube.

[0026] 4. Add 20 mg of azine-linked COF to the above centrifuge tube, shake the above centrifuge tube for 5 minutes to mix all the components in it evenly.

[0027] 5. React the centrifuge tube in step 4 in a 50°C water bath for 10 hours, and the mixture in the centrifuge tube will form a yellow solid.

[0028] 6. Repeatedly immersing and washing the material in the centrifuge tube with methanol to obtain the azine-linked COF doped hierarchical porous monolithic material.

Embodiment 2

[0030] 1. Add 50.0 mg of POSS-epoxy reagent to the centrifuge tube.

[0031] 2. Add 54.0 mg of PEI aqueous solution to the above centrifuge tube.

[0032] 3. Add 25 mg PEG, 280 μL n-propanol and 40 μL 1,4-butanediol to the above centrifuge tube.

[0033] 4. Add 40 mg of azine-linked COF pre-saturated with toluene to the above centrifuge tube, shake the above centrifuge tube for 5 minutes to mix the components in it evenly.

[0034] 5. React the centrifuge tube in step 4 in a 50°C water bath for 10 hours, and the mixture in the centrifuge tube will form a yellow solid.

[0035] 6. Repeatedly immersing and washing the material in the centrifuge tube with methanol to obtain the azine-linked COF doped hierarchical porous monolithic material.

[0036] figure 2 It is the adsorption kinetic curve of the azine-linked COF doped hierarchical porous monolith (Example 1) to bisphenol A in aqueous solution. Experimental conditions: bisphenol A aqueous solution (22.8mg / L); UV-vis detec...

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Abstract

The invention relates to a preparation method for a hierarchical porous integral material containing polymers of covalent organic frameworks (COF). The method comprises the specific steps that the polymers of the covalent organic frameworks, a compound (functional monomer) containing epoxy functional groups, a compound (functional monomer) containing amidogen functional groups, a pore-foaming agent and the like are mixed and subjected to oscillation dispersion, an epoxy ring-opening polymerization reaction is conducted at certain temperature, and the integral material of the hierarchical porous (micropore-mesoporous-macropore) structure can be prepared. The preparation method has the advantages of being mild in condition, efficient, controllable and the like. In addition, according to different application requirements, different polymers of the covalent organic frameworks can be selected, or the mixing amount of the polymers of the covalent organic frameworks can be adjusted, and a series of hierarchical porous integral materials with different physical and chemical properties are prepared.

Description

technical field [0001] The invention relates to a method for preparing a multi-level porous monolithic material containing a covalent organic framework polymer (covalent organic frameworks, COF). Specifically, the covalent organic framework polymer, epoxy functional group-containing compound (functional monomer), amino functional group-containing compound (functional monomer), porogen, etc. are mixed and oscillated to disperse, and then epoxy ring-opening occurs at a certain temperature. The ring-opening polymerization reaction can prepare monolithic materials with hierarchical porous structures (micropores-mesopores-macropores) in one step. Background technique [0002] Hierarchically porous monolithic materials generally have more than two pore sizes (micropores, pore diameters less than 2 nm; mesoporous, pore diameters greater than 2 nm and less than 50 nm; macropores, pore diameters greater than 50 nm). This hierarchical pore structure not only increases the specific su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/26C08G77/452
CPCC08G77/452C08J9/26C08J2383/10
Inventor 欧俊杰刘忠山叶明亮
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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