Magnetic triptycene-triazine covalent framework solid-phase extracting agent and preparation method and application thereof

A technology of solid-phase extraction agent and triacene, which is applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve problems such as analysis and detection interference, reduce difficulty and cost, and save Organic solvent, low cost effect

Active Publication Date: 2019-02-19
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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  • Magnetic triptycene-triazine covalent framework solid-phase extracting agent and preparation method and application thereof
  • Magnetic triptycene-triazine covalent framework solid-phase extracting agent and preparation method and application thereof
  • Magnetic triptycene-triazine covalent framework solid-phase extracting agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1. Preparation of magnetic triazene-triazine covalent framework solid phase extraction agent

[0039] A preparation method of magnetic triazene-triazine covalent framework solid phase extraction agent, comprising the following steps:

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

[0041] Weigh 1.2g FeCl 3 ·6H 2 The O solid was added to a 100mL beaker, 30mL of ethylene glycol was added to make it dissolve in a transparent solution by ultrasound, and then 3.5g of anhydrous sodium acetate and 0.8g of polyethylene glycol were added, ultrasonicated for 15min; transferred to a 200mL high-pressure reaction In the kettle, react at 200℃ for 15h, and wash the Fe produced by the reaction with ethanol and ultrapure water successively 3 O 4 , Repeat three times, after vacuum drying at 60℃ for 12h, magnetic Fe with good monodispersity can be obtained 3 O 4 Nano particles, stored in a desiccator for later use;

[0042] (2) Magnetic Fe 3 O 4 @SiO 2 Synthesis of particles: ...

Embodiment 2

[0053] Example 2. The adsorption performance test of the magnetic triazene-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 triazene-triazine covalent organic framework solid phase extraction agent 2mg each, add 2mL different anthraquinone compound standard solutions (concentration 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 Image 6 Shown. Experiments have proved that the magnetic triazene-triazine covalent organic framework solid phase extractant material has the best adsorption capacity for anthraquinone. This is because the modified triazene-triazine covalent organic framework layer not only has a larger specific surface area and unique pore size, but also provide...

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Abstract

The invention discloses a magnetic triptycene-triazine covalent framework solid-phase extracting agent and a preparation method and application thereof. The preparation method comprises the followingsteps: in the presence of AlCl3, carrying out Friedel-Crafts polymerization reaction on amino modified Fe3O4, triazine and triptycene under the condition of reluxing, and washing and drying to obtainthe magnetic triptycene-triazine covalent framework solid-phase extracting agent. The magnetic triazine-based composite material synthesized by the method has the advantages of good dispersibility, large specific area, stable core-shell structure, simplicity and convenience in synthetic method, low cost, repeatability and recyclability and the like. By a covalent organic framework which is bondedto ferroferric oxide, various acting forces such as pi-pi effect, hydrophobic effect, hydrogen-bond interaction and electron transfer effect can be provided, and thus, the magnetic triptycene-triazinecovalent framework solid-phase extracting agent has high adsorption effect on compounds containing aromatic conjugated systems.

Description

Technical field [0001] The invention relates to a separation material, in particular to a magnetic triazene-triazine covalent framework solid phase extraction agent, and a preparation method and application thereof. Background technique [0002] Anthraquinones are naturally occurring phenolic compounds, which are widely found in plants such as cassia, rhubarb, and aloe. Because of their obvious hemostatic and laxative effects, these anthraquinone-containing herbs have been widely used in the production of health foods. These biologically active anthraquinone substances 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, the content of anthraquinone laxatives in medicines and slimming teas must be paid attention to. It is necessary to establish simple, rapid and sensitive analytical methods to support the determination of trace anthraquinones. [0003] At present, there are...

Claims

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Application Information

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Patent Type & Authority Applications(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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