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COF (covalent organic framework)-chitosan composite aerogel material supported with metal nanoparticles, preparation method and application

A technology of covalent organic framework and composite airgel, which is applied in the preparation of organic compounds, preparation of amino compounds, organic compound/hydride/coordination complex catalysts, etc., to achieve excellent properties, high-efficiency catalysis, and stable structure

Inactive Publication Date: 2018-08-03
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the first covalent organic framework was reported in 2005, hundreds of COFs materials have been prepared, especially in the past two years, COFs materials have shown an "explosive" development! Nevertheless, the current research focuses on the design and synthesis of new COFs functional materials, and the research on COFs deviceization is still limited to COFs membrane materials. The three-dimensional composite materials based on COFs materials have not been reported yet, which is a new field that needs to be developed urgently.

Method used

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  • COF (covalent organic framework)-chitosan composite aerogel material supported with metal nanoparticles, preparation method and application
  • COF (covalent organic framework)-chitosan composite aerogel material supported with metal nanoparticles, preparation method and application
  • COF (covalent organic framework)-chitosan composite aerogel material supported with metal nanoparticles, preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0100] Embodiment 1: the preparation of COF-1 (TpPa-1)

[0101] TpPa-1 is a COFs crystal obtained by the solvothermal reaction of p-phenylenediamine and 1,3,5-trihydroxy-2,4,6-tricarbaldehyde. The specific process is as follows: mix 1,3,5-trihydroxy-2,4,6-pyrylenetricarbaldehyde (210mg), 1,4-p-phenylenediamine (160mg), mesitylene (30ml), 1,4- Dioxane (10ml), water (4ml), and acetic acid (1.4ml) were added to a 100ml pressure-resistant tube and frozen in liquid nitrogen. Vacuumize for 10 minutes. After the temperature of the pressure-resistant tube rises to room temperature, put it into an oil bath at 120°C and react at a constant temperature for 72 hours. Centrifuge to obtain a red solid, which was activated once with tetrahydrofuran (60°C), acetone (50°C), and absolute ethanol (60°C), respectively, each time for 24 hours. Finally, it was washed once with ether and dried in an oven at 80°C for 5 hours. TpPa-1 is prepared and ready for use. TpPa-1 crystal powder photo as f...

Embodiment 2

[0102] Embodiment 2: COF-2 (TpPa-NO 2 ) preparation

[0103] TpPa-NO 2 It is a COFs crystal obtained by solvothermal reaction of 2-nitro-p-phenylenediamine and 1,3,5-trihydroxy-2,4,6-triphenylenetricarbaldehyde. The specific process is as follows: 1,3,5-trihydroxy-2,4,6-pyrylenetricarbaldehyde (210mg), 2-nitro-1,4-p-phenylenediamine (230mg), mesitylene (30ml), Add 1,4-dioxane (10ml), water (4ml), and acetic acid (1.4ml) into a 100ml pressure-resistant tube, and freeze in liquid nitrogen. Vacuumize for 10 minutes. After the temperature of the pressure-resistant tube rises to room temperature, put it into an oil bath at 120°C and react at a constant temperature for 72 hours. Centrifuge to obtain a dark red solid, which was activated with tetrahydrofuran (room temperature), acetone (room temperature), and absolute ethanol (60° C.), respectively, for 24 hours each time. Finally, it was washed once with ether and dried in an oven at 80°C for 5 hours. TpPa-NO 2 Ready to use. ...

Embodiment 3

[0104] Embodiment 3: the preparation of COF-3 (NUS-2)

[0105] NUS-2 is a COFs crystal obtained from the solvothermal reaction of hydrazine hydrate and 1,3,5-trihydroxy-2,4,6-tricarbaldehyde. The specific process is as follows: mix 1,3,5-trihydroxy-2,4,6-tricarbaldehyde (420mg), hydrazine hydrate (150 microliters), mesitylene (10ml), 1,4-dioxane (10ml), water (2ml), and acetic acid (686 microliters) were added to a 100ml pressure-resistant tube and frozen in liquid nitrogen. Vacuumize for 10 minutes. After the temperature of the pressure-resistant tube rises to room temperature, put it into an oil bath at 120°C and react at a constant temperature for 72 hours. A red solid was obtained by centrifugation, which was activated once with tetrahydrofuran, acetone, and absolute ethanol, each time for 24 hours. Finally, it was washed once with ether and dried in an oven at 80°C for 5 hours. NUS-2 is prepared and ready for use. COF-2 crystal powder photo as Figure 13 , the struct...

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Abstract

The invention relates to a COF (covalent organic framework)-chitosan composite aerogel material supported with metal nanoparticles and a preparation method of the composite aerogel material. The COF-chitosan composite aerogel material supported with metal nanoparticles is prepared from, in parts by weight, 0-2.16 parts of metal particles, 27.84-50 parts of a COF material and 50-70 parts of chitosan, wherein the content of the metal particles is not zero. Firstly, metal salt is supported in the COF material, metal salt is reduced, the palladium-supported COF material is obtained and then formsan aerogel material with chitosan; the COF material and chitosan are composited, and the composite aerogel material with stable structure and good property is prepared; device production of the COF material and function integration of the COF material and the device are realized; flowing type efficient catalysis of a dechlorination reaction of chlorine-containing aromatic compounds is realized through dechlorination reactions of p-chlorophenol, o-chlorophenol, m-chlorophenol and the like.

Description

technical field [0001] The invention relates to a covalent organic framework-chitosan composite airgel material and its preparation method and application, belonging to the technical field of polymer composite materials. Background technique [0002] Covalent organic frameworks (COFs), known as "organic zeolites", are a class of organic porous polymer materials with ordered crystal structures. COFs materials use small organic molecules as building blocks and form a network structure connected by covalent bonds. The long-range ordered network structure makes COFs have a uniformly distributed pore structure of a specific size, and the pore structure is highly ordered and the pore size can be adjusted. It has the advantages of large specific surface area, various synthesis methods and easy functional modification, so it has important applications in gas storage and separation, catalysis, photoelectric materials, etc., and is a new type of "star" material. Since the first coval...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C07C37/02C07C201/12C07C209/74C07C39/04C07C211/46C07C205/06
CPCC07C37/02C07C201/12C07C209/74B01J31/06B01J35/23C07C39/04C07C211/46C07C205/06Y02P20/52
Inventor 姚丙建李飞董育斌丁罗刚
Owner SHANDONG NORMAL UNIV
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