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A kind of magnetic sulfonic acid functionalized cofs material and its preparation method and application

A sulfonic acid-based, functionalized technology, applied in chemical instruments and methods, separation methods, analytical materials, etc., can solve the problem of poor selective adsorption performance of aromatic amine compounds, and achieve strong electrostatic adsorption and efficient adsorption effect

Active Publication Date: 2021-01-22
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a magnetic sulfonic acid functionalized COFs material, thereby solving the problem of poor selective adsorption performance of existing materials on aromatic amine compounds

Method used

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  • A kind of magnetic sulfonic acid functionalized cofs material and its preparation method and application
  • A kind of magnetic sulfonic acid functionalized cofs material and its preparation method and application
  • A kind of magnetic sulfonic acid functionalized cofs material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The magnetic sulfonic acid functionalized COFs material of this embodiment, such as figure 1 As shown, the following steps are used to prepare:

[0041] Dissolve 2,4,6-triformylpyroglucinol (21.0mg), 2,5-diaminobenzenesulfonic acid (28.2mg) in trimethylbenzene / dioxane mixed solvent (from 0.2mL Trimethylbenzene, 0.8mL dioxane mixed), add 0.1mL acetic acid solution with a concentration of 3mol / L, mix at room temperature to form a homogeneous solution; then add 0.02g magnetic Nanoparticles were reacted at 100°C for 72 hours. After the reaction, a black solid product was isolated, washed successively with anhydrous dimethylformamide, anhydrous tetrahydrofuran and anhydrous acetone, and washed 2-3 times with anhydrous methanol to complete the activation. Vacuum drying at 150°C for 12 hours yielded the magnetic sulfonic acid functionalized COFs material.

[0042] Applying the magnetic sulfonic acid functionalized COFs material of this embodiment to the detection of aromatic...

Embodiment 2

[0062] The magnetic sulfonic acid functionalized COFs material of this example is prepared by the following steps:

[0063] Dissolve 2,4,6-triformylpyroglucinol (11.0mg), 2,5-diaminobenzenesulfonic acid (18.2mg) in trimethylbenzene / dioxane mixed solvent (from 0.2mL Trimethylbenzene, 0.6mL dioxane mixed), add 0.1mL acetic acid solution with a concentration of 3mol / L, mix at room temperature to form a homogeneous solution; then add 0.02g magnetic Nanoparticles were reacted at 90°C for 80 hours. After the reaction, a black solid product was isolated, washed successively with anhydrous dimethylformamide, anhydrous tetrahydrofuran and anhydrous acetone, and then washed 2-3 times with anhydrous methanol to complete the activation. Vacuum drying at 150°C for 12 hours yielded the magnetic sulfonic acid functionalized COFs material.

Embodiment 3

[0065] The magnetic sulfonic acid functionalized COFs material of this example is prepared by the following steps:

[0066] Dissolve 2,4,6-triformylpyroglucinol (28.0mg), 2,5-diaminobenzenesulfonic acid (40.0mg) in trimethylbenzene / dioxane mixed solvent (from 0.2mL Trimethylbenzene, 1.2mL dioxane mixed), add 0.1mL acetic acid solution with a concentration of 3mol / L, mix at room temperature to form a homogeneous solution; then add 0.04g magnetic Nanoparticles were reacted at 120°C for 60 hours. After the reaction, a black solid product was isolated, washed successively with anhydrous dimethylformamide, anhydrous tetrahydrofuran and anhydrous acetone, and washed 2-3 times with anhydrous methanol to complete the activation. Vacuum drying at 150°C for 12 hours yielded the magnetic sulfonic acid functionalized COFs material.

[0067] In other embodiments of the magnetic sulfonic acid functionalized COFs material of the present invention, the amount of 2,4,6-triformylpyroglucinol, ...

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Abstract

The invention relates to a magnetic sulfonic functional COFs material, a preparation method and application thereof. The COFs material includes a covalent organic framework formed by Schiff base condensation reaction of 2, 4, 6-triformylphloroglucinol and 2, 5-diaminobenzenesulfonic acid, and magnetic nanoparticles for modification on the covalent organic framework, wherein the magnetic nanoparticles are amino functionalized Fe3O4 / SiO2 core-shell nanoparticles. The aperture confinement effect of the COFs material can exclude adsorption of protein and other macromolecules in a urine matrix. Thesulfonic group on the COFs material has strong electrostatic adsorption effect with the amino of an aromatic amine compound, and can achieve efficient adsorption of the aromatic amine compound and prevent adsorption of an electronegative compound. The benzene ring structure on the COFs material and the benzene ring of the aromatic amine compound have strong Pi-Pi interaction. The COFs material realizes selective efficient enrichment of trace aromatic amine compound in a complex matrix.

Description

technical field [0001] The invention belongs to the field of covalent organic framework materials (COFs), and in particular relates to a magnetic sulfonic acid functionalized COFs material and a preparation method and application thereof. Background technique [0002] Some aromatic amine compounds are carcinogenic and mutagenic, and can cause poisoning through inhalation, ingestion or absorption through the skin. The list of harmful substances and potentially hazardous substances (HPHCs) in FDA cigarette products and cigarette smoke contains 6 kinds of aromatic amines, 4-aminobiphenyl, 1-aminonaphthalene, 2-aminonaphthalene, o-anisidine, 2,6-di Methylaniline, ortho-toluidine. These aromatic amines were used as biomarkers of cigarette smoke exposure. [0003] The study of biomarkers helps to illustrate the nature and extent of health risks to humans when exposed to such substances. Due to the low content of aromatic amine biomarkers, the interference during detection is re...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/281B01J20/28B01J20/30B01D15/10G01N30/02G01N30/06
CPCB01D15/10B01J20/226B01J20/28009B01J20/281G01N30/02G01N30/06
Inventor 余晶晶孟庆华王冰蔡君兰秦亚琼赵晓东刘克建薛聪刘绍锋张晓兵
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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