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A kind of solid-phase extraction agent of magnetic triacene-triazine covalent framework and its preparation method and application

A technology of solid phase extraction agent and triacene, applied in chemical instruments and methods, other chemical processes, ion exchange, etc., can solve problems such as analysis and detection interference, reduce difficulty and cost, save organic solvents, and reduce raw material costs Effect

Active Publication Date: 2021-04-13
HENAN UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these extraction processes are difficult to be selective, and many impurities are also extracted, which brings great interference to the analysis and detection, so it is necessary to use solid phase extraction for further purification

Method used

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  • A kind of solid-phase extraction agent of magnetic triacene-triazine covalent framework and its preparation method and application
  • A kind of solid-phase extraction agent of magnetic triacene-triazine covalent framework and its preparation method and application
  • A kind of solid-phase extraction agent of magnetic triacene-triazine covalent framework and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1, the preparation of magnetic triacene-triazine covalent skeleton solid-phase extraction agent

[0039] A kind of preparation method of magnetic triacene-triazine covalent skeleton solid-phase extraction agent, comprises the following steps:

[0040] (1) Magnetic Fe 3 o 4 Synthesis of nanoparticles:

[0041] Weigh 1.2g FeCl 3 ·6H 2 O solid in a 100mL beaker, add 30mL of ethylene glycol, sonicate to dissolve it into a transparent solution, then add 3.5g of anhydrous sodium acetate and 0.8g of polyethylene glycol, sonicate for 15min; transfer to a 200mL high-pressure reaction In the kettle, react at 200°C for 15 hours, and wash the Fe produced by the reaction with ethanol and ultrapure water in sequence. 3 o 4 , repeated three times, after vacuum drying at 60°C for 12 hours, magnetic Fe with good monodispersity can be obtained 3 o 4 Nanoparticles, stored in a desiccator for subsequent use;

[0042] (2) Magnetic Fe 3 o 4 @SiO 2 Synthesis of particle...

Embodiment 2

[0053] Example 2. Adsorption performance test of magnetic triacene-triazine covalent organic framework solid-phase extraction agent:

[0054] 1. Adsorption of anthraquinone compounds

[0055] The specific method is:

[0056] Take Fe 3 o 4 @SiO 2 , Fe 3 o 4 @SiO 2 -NH 2 , magnetic triacene-triazine covalent organic framework solid-phase extraction reagent 2mg each, add 2mL different standard solutions of anthraquinone compounds (concentration is 2μg / mL), ultrasonic adsorption for 10min, pass through a microporous membrane, and inject . Compare the adsorption capacity of the synthesized magnetic materials to anthraquinone compounds, such as Figure 6 shown. Experiments have proved that the magnetic triacene-triazine covalent organic framework solid-phase extractant material has the best adsorption capacity for anthraquinone. This is because the modification of the triacene-triazine covalent organic framework layer not only has a large specific surface area and a uniqu...

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Abstract

The invention discloses a solid-phase extractant of a magnetic triacene-triazine covalent framework and its preparation method and application. The preparation method is prepared in AlCl 3 In the presence of the amino-modified Fe 3 o 4 , Cyanuric chloride and triacene undergo Friedel-Crafts polymerization under the condition of reflux, and after washing and drying, a magnetic triacene-triazine covalent skeleton solid-phase extraction agent can be prepared. The magnetic triazine-based composite material synthesized by the method has the advantages of good dispersibility, large specific surface area, stable core-shell structure, simple and convenient synthesis method, low cost, repeatable recycling and the like. The covalent organic framework bonded to ferroferric oxide can provide various forces such as π-π interaction, hydrophobic interaction, hydrogen bond interaction, electron transfer effect, etc., so it has a strong effect on some compounds containing aromatic conjugated systems. Adsorption.

Description

technical field [0001] The invention relates to a separation material, in particular to a magnetic triacene-triazine covalent skeleton solid-phase extraction agent and a preparation method and application thereof. Background technique [0002] Anthraquinones are naturally occurring phenolic compounds found in plants such as cassia, rhubarb, and aloe vera. Due to their obvious hemostatic and laxative effects, these anthraquinone-containing herbal plants have been widely used in the production of health food. These bioactive anthraquinones are beneficial to human health, but they can also cause damage to the intestinal epithelium and increase the risk of colorectal cancer and psoriasis. Therefore, attention must be paid to the content of anthraquinone laxatives in drugs and slimming tea, and a simple, rapid and sensitive analytical method needs to be established to support the determination of trace anthraquinones. [0003] At present, there are many methods for the determin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D15/08
CPCB01D15/08B01J20/226B01J20/28009B01J20/28016B01J20/28061
Inventor 胡锴史艳梅刘湘花陈志红龚海燕董春红
Owner HENAN UNIV OF CHINESE MEDICINE
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