A magnetic covalent triazine framework material and its preparation method and application

A covalent triazine framework, magnetic technology, applied in chemical instruments and methods, natural water treatment, physical/chemical process catalysts, etc., can solve the problem of difficult recovery of covalent triazine framework materials, and achieve complete reaction and convenient recovery. The effect of using

Active Publication Date: 2021-12-31
SUZHOU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the performance of the covalent triazine framework materials in the prior art still needs to be improved, and in the application process, there is a problem that the covalent triazine framework materials are difficult to recycle

Method used

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  • A magnetic covalent triazine framework material and its preparation method and application
  • A magnetic covalent triazine framework material and its preparation method and application
  • A magnetic covalent triazine framework material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Weigh 2g terephthalonitrile and 2g Fe 3 o 4 , after mixing evenly, quickly add 16g ZnCl 2 , after mixing evenly, the powder was transferred into a quartz crucible, and reacted for 60 minutes under a power of 500W to obtain a black product, which was mixed with 0.1mol·L -1 HCl soak to remove residue while preventing ZnCl 2 After hydrolysis and soaking, the precipitate was separated under the condition of an external magnetic field, washed alternately with water and absolute ethanol three times, dried in vacuum at 60°C for 6 hours, taken out and ground to obtain 0.85g MCTF powder.

Embodiment 2

[0041] Weigh 2g terephthalonitrile and 4g Fe 3 o 4 , after mixing evenly, quickly add 16g ZnCl 2 , after mixing evenly, transfer the powder into a quartz crucible, and react at 300W for 60min to obtain a black product, which is mixed with 0.1mol·L -1 HCl soak to remove residue while preventing ZnCl 2 After hydrolysis and soaking, the precipitate was separated under the condition of an external magnetic field, washed alternately with water and absolute ethanol three times, dried in vacuum at 60°C for 6 hours, taken out, and ground to obtain 2.93g of MCTF powder.

Embodiment 3

[0043] Weigh 2g terephthalonitrile and 4g Fe 3 o 4 , after mixing evenly, quickly add 16g ZnCl 2 , after mixing evenly, transfer the powder into a quartz crucible, and react at 400W power for 60min to obtain a black product, which is mixed with 0.1mol·L -1 HCl soak to remove residue while preventing ZnCl 2 After hydrolysis and soaking, the precipitate was separated under the condition of an external magnetic field, washed alternately with water and absolute ethanol three times, dried in vacuum at 60°C for 6 hours, taken out and ground to obtain 2.68g of MCTF powder.

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Abstract

The invention relates to a magnetic covalent triazine framework material and its preparation method and application. The magnetic covalent triazine framework material comprises a covalent triazine framework and Fe 3 o 4 . The magnetic covalent triazine skeleton material of the invention has magnetism, is convenient for recycling, can be used in waste water treatment, and can be used as a catalyst in the degradation of antibiotics. Preparation method of the present invention adopts microwave as heat source, with Fe 3 o 4 As a microwave absorption transmission medium, terephthalonitrile can be rapidly condensed, and at the same time due to Fe 3 o 4 The existence of the powder makes the powder aggregate during the reaction, and the phenomenon of powder overflow is not easy to occur, making the reaction more complete.

Description

technical field [0001] The invention specifically relates to a magnetic covalent triazine skeleton material and its preparation method and application. Background technique [0002] Covalent Organic Frameworks (COFs) are a new type of high-density organic framework composed of light elements (H, O, C, N, B) through strong covalent bonds (such as C-C, C-N, C-O, etc.). Performance Carbonaceous polymer materials, due to the existence of covalent bonds, promote their high chemical stability in different solvents. Covalent Triazine-based Frameworks (CTFs) is a branch of COFs, which is a long-chain polymer with rigid hydrophobic aromatic backbone and polar functional groups. By using aromatic nitriles as raw materials, ZnCl 2 As a catalyst, it is condensed by trimerization reaction. It has attracted much attention because it does not require organic solvents, low cost, and high nitrogen content. Currently commonly used CTF synthesis methods include solvothermal synthesis, ionoth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06C08K3/22C02F1/28C02F1/72B01J31/28B01J35/10C02F101/30C02F101/34C02F101/38
CPCC08G73/0644C08K3/22C02F1/285C02F1/725B01J31/28B01J35/0033B01J35/1014B01J35/1061B01J35/1038C08K2003/2275C08K2201/01C02F2101/30C02F2101/308C02F2101/34C02F2101/38C02F2101/40C02F2103/343
Inventor 高仕谦邵子纯卢建张占恩丁炜楠刘婷婷王俊霞
Owner SUZHOU UNIV OF SCI & TECH
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