A kind of covalent triazine framework polymer, its preparation method and application

A covalent triazine and polymer technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, chemical/physical processes, etc., can solve the problem of narrow selection range, triazine framework polymer hydrogen production In order to avoid problems such as poor performance, the method is simple, the triazine framework polymer is regular, and the effect of improving hydrogen production performance is achieved.

Active Publication Date: 2020-10-02
HUAZHONG UNIV OF SCI & TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of the above defects or improvement needs of the prior art, the present invention provides a covalent triazine framework polymer, its preparation method and application, which uses a monomer containing α-C and a functional group as the first monomer , and the second monomer polyamidine compound, under the action of a strong base catalyst, a condensation reaction occurs, and a hydrophilic triazine framework polymer with mesoporous and macroporous structures is prepared, which is used for photolysis of water to produce hydrogen. The hydrogen production performance is significantly improved, thereby solving the technical problems of the existing technology to prepare triazine framework polymer monomers with narrow selection range and the obtained triazine framework polymer with poor hydrogen production performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of covalent triazine framework polymer, its preparation method and application
  • A kind of covalent triazine framework polymer, its preparation method and application
  • A kind of covalent triazine framework polymer, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] A method for preparing a methyl-based covalent triazine framework material, comprising the steps of:

[0092] (1) Add a certain mass (1.0g) of p-xylene and dimethylamidine monomer with a group ratio of 2:1 in a round bottom flask of a certain volume (250.0mL);

[0093] (2) Based on step (1), potassium tert-butoxide with a ratio of 1:1 to the terephthalamidine group was added to the system, and 50 mL of DMSO was added as a solvent and stirred evenly;

[0094] (3) Based on step (2), then add 200 μL of distilled water to the flask;

[0095] (4) Start stirring based on step (3), heat, and use two gradient heating methods for heating, first heating and reacting at 100°C for 48 hours, and then heating and reacting at 160°C for 48 hours;

[0096] (5) Under the reaction conditions based on step (4), the reaction time is 96 hours. Then stop heating and stirring, and then add 50mL of ethanol to the system after the device is completely cooled. Then vacuum filter using Buchner ...

Embodiment 2

[0105] A method for preparing a covalent triazine framework material based on acetate, comprising the steps of:

[0106] (1) In a round bottom flask of a certain volume (250.0mL), add a certain mass (1.0g) of diacetic acid and a dimethylamidine monomer with a group ratio of 2:1;

[0107] (2) Based on step (1), then add a strong base such as potassium tert-butoxide in an amount of 1:1 to the terephthalamidine group into the system, add 50 mL of DMSO as a solvent and stir Uniform;

[0108] (3) Based on step (2), then add 200 μL of distilled water into the flask.

[0109] (4) Start stirring based on step (3), heat, and use two gradient heating methods for heating, the first heating reaction at 150°C for 48 hours, and then heating reaction at 160°C for 48 hours.

[0110] (5) Under the reaction conditions based on step (4), the waiting time for reaction is 96 hours. Then stop heating and stirring, and then add 50mL of ethanol to the system after the device is completely cooled. ...

Embodiment 3

[0119] A preparation method of a benzylamine-based covalent triazine framework material, comprising the steps of:

[0120] (1) Add a certain mass (1.0 g) of dibenzylamine and dimethylamidine monomer with a group ratio of 2:1 into a round bottom flask with a certain volume (250.0 mL).

[0121] (2) Based on step (1), then add a strong base such as potassium tert-butoxide in an amount of 1:1 to the terephthalamidine group into the system, add 50 mL of DMSO as a solvent and stir uniform.

[0122] (3) Based on step (2), then add 200 μL of distilled water into the flask.

[0123] (4) Start stirring based on step (3), heat, and use two gradient heating methods for heating, the first heating reaction at 100-150°C for 48 hours, and then heating reaction at 160°C for 48 hours.

[0124] (5) Under the reaction conditions based on step (4), the waiting time for reaction is 96 hours. Then stop heating and stirring, and then add 50mL of ethanol to the system after the device is completely...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the technical field of new materials, and more particularly relates to a covalent triazine framework polymer as well as a preparation method and application thereof. Accordingto the preparation method, a first monomer, a second monomer, a solvent and a catalyst are uniformly mixed for a reaction, and the reaction product is separated and purified to obtain the covalent triazine framework polymer, wherein the catalyst is a strong base with a base pKa being greater than 14; the first monomer is a monomer containing alpha-C and functional groups; the first monomer contains at least two of the functional groups; the functional group is an aldehyde group or a functional group capable of being converted into the aldehyde group by oxidation or reduction; and the second monomer is a multi-amidine compound. By adopting the method, not only is the monomer range of the existing reported synthesized covalent triazine framework greatly expanded, but also the reduction of the cost and limitation of the synthesis is facilitated; when the covalent triazine framework polymer is applied to photocatalytic decomposition of water for producing hydrogen, a multi-level pore structure of the material facilitates the generation and separation of photon-generated carriers, and reduces the recombination of the photon-generated carriers, so that the photoelectric performance andcatalytic efficiency of a semiconductor are improved.

Description

technical field [0001] The invention belongs to the technical field of new materials, and more specifically relates to a covalent triazine framework polymer, its preparation method and application. Background technique [0002] Covalent organic triazine frameworks, as one of the classifications of porous organic materials, have been widely studied and applied in various fields. [0003] In 2008, Thomas et al. used ion thermal method in ZnCl 2 CTF-1 is obtained at medium and high temperature (>400°C), with high specific surface area and microporous structure, but this method leads to partial carbonization of the polymer, no energy band structure, and poor photocatalytic performance. [0004] In 2012, Cooper et al. synthesized CTF-1 with energy band structure by using trifluoromethanesulfonic acid under strong acid conditions to synthesize CTF-1 with energy band structure, but the specific surface area of ​​CTF-1 synthesized under this strong acid environment Low, the hyd...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06B01J31/06B01J35/00B01J35/10C01B3/04
CPCB01J31/063B01J35/004B01J35/10C01B3/042C01B2203/0277C08G73/0644C08G73/065Y02E60/36
Inventor 金尚彬张思泉谭必恩程光
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap