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A kind of phenylboronic acid functionalized multi-wall carbon nanotube magnetic nanocomposite material and its preparation method and application

A multi-walled carbon nanotube, magnetic nanotechnology, applied in chemical instruments and methods, material analysis by electromagnetic means, material analysis, etc., can solve the problem of low separation and enrichment efficiency, few functional adsorption sites of phenylboronic acid, and adsorption The problem of limited active layer can achieve the effect of increasing extraction efficiency, improving energy conversion efficiency and high adsorption capacity.

Active Publication Date: 2021-05-25
INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the adsorption layer of this type of material is limited, and the functional adsorption sites of phenylboronic acid are few, so the separation and enrichment efficiency is low in practical applications.

Method used

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  • A kind of phenylboronic acid functionalized multi-wall carbon nanotube magnetic nanocomposite material and its preparation method and application
  • A kind of phenylboronic acid functionalized multi-wall carbon nanotube magnetic nanocomposite material and its preparation method and application
  • A kind of phenylboronic acid functionalized multi-wall carbon nanotube magnetic nanocomposite material and its preparation method and application

Examples

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preparation example Construction

[0050] The present invention designs a boric acid functionalized multi-walled carbon nanotube magnetic nanocomposite material, which is obtained by the following preparation method, which mainly includes:

[0051] Step 1, preparation of multi-walled carbon nanotube magnetic nanoparticles

[0052] Combining carboxylated multi-walled carbon nanotubes with magnetic precursor materials to obtain multi-walled carbon nanotube magnetic nanoparticles with carboxylated surfaces, wherein carboxylated multi-walled carbon nanotubes have a larger specific surface area and more carboxyl sites It can provide reaction sites for further modification of subsequent materials, improve the separation ability and functionalization sites of materials.

[0053] Step 2, preparation of aminated carbon nanotube magnetic particles

[0054] The surface of the multi-walled carbon nanotube magnetic nanoparticles is modified with amino groups by a polyamino structure polymer, and the polyamino structure pol...

Embodiment 1

[0061] Preparation of phenylboronic acid-functionalized multi-walled carbon nanotube magnetic nanocomposites

[0062] Weigh 5g FeCl 3 , 12.5g of sodium acetate, 3g of polyethylene glycol and 1g of carboxylated multi-walled carbon nanotubes were placed in a beaker, and 100mL of ethylene glycol solution was added, and stirred evenly on a magnetic stirrer at room temperature after ultrasonic dispersion. Then the mixed solution was transferred to a high-pressure reactor, heated to 200°C for reaction, and after 10 hours of reaction, after it was naturally cooled to room temperature, it was adsorbed and separated by an external strong magnet, and then washed with deionized water and ethanol to obtain a magnetic Multi-walled carbon nanotube magnetic nanoparticles.

[0063] Weigh 1g of the multi-walled carbon nanotube magnetic nanoparticles prepared above, add 1g of EDS and 1g of NHS, ultrasonically disperse in 100mL of PBS solution with pH 6, stir and react in a water bath at 37°C f...

Embodiment 2

[0067] Preparation of Phenylboronic Acid Functionalized Multi-walled Carbon Nanotube Magnetic Nanomaterials

[0068] Weigh 6g FeCl 3 , 15g of sodium acetate, 4g of polyethylene glycol and 3g of carboxylated multi-walled carbon nanotubes were placed in a beaker, and 120mL of ethylene glycol solution was added, and stirred evenly on a magnetic stirrer at room temperature after ultrasonic dispersion. Then the mixed solution was transferred to a high-pressure reactor, heated to 180°C for reaction, and after 10 hours of reaction, after it was naturally cooled to room temperature, it was adsorbed and separated by an external strong magnet, and then washed with deionized water and ethanol to obtain a magnetic Multi-walled carbon nanotube magnetic nanoparticles.

[0069] Weigh 2 g of the multi-walled carbon nanotube magnetic nanoparticles prepared above, add 3 g of EDS and 4 g of NHS, ultrasonically disperse them in 120 mL of PBS solution with a pH of 5.5, stir and react at 40 ° C fo...

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Abstract

The invention provides a phenylboronic acid functionalized multi-walled carbon nanotube magnetic nanocomposite material and its preparation method and application. By compounding carboxylated multi-walled carbon nanotubes with magnetic nanoparticles, the separation ability and functional position of the material are improved. points, and then introduce polyamino structural polymers to increase the amination groups of the material, and then use polycarboxy structural polymers to carry out functional grafting to further improve the functional sites of composite materials, and at the same time, the acyl chloride polycarboxylic structure The polymer is used as a linking agent to introduce phenylboronic acid functional groups through amidation reaction, which improves the functional group introduction density and adsorption capacity of the composite material, and facilitates the extraction of subsequent cis-dihydroxy small molecule compounds such as flavonoids with high added value. Analytical applications provide the foundation.

Description

technical field [0001] The present invention relates to the technical field of novel magnetic functional composite materials and MALDI-TOF-MS detection of cis-dihydroxy small molecule compounds, in particular to a phenylboronic acid functionalized polymer for MALDI-TOF-MS analysis of cis-dihydroxy small molecules. Wall carbon nanotube magnetic nanocomposite material and preparation method thereof. Background technique [0002] Matrix-assisted laser desorption time-of-flight mass spectrometry (MALDI-TOF-MS) is widely used in biological macromolecules such as proteins, polypeptides, and polysaccharides due to its advantages of simple operation, fast analysis speed, high throughput, high sensitivity, and soft ionization. analysis. But for low molecular weight (<500 Da) compounds, conventional organic matrices such as 2,4,6-trihydroxyacetophenone (THAP), 2,5-dihydroxybenzoic acid (DHB), α-cyano-4-hydroxy Cinnamic acid (CHCA), etc., because the absorption of laser energy wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00G01N27/64B01J20/26B01J20/28B01J20/30
CPCB01J20/265B01J20/28009B01J20/28057C08G83/001G01N27/64
Inventor 王敏李付凯周剑杨梦瑞王彤彤
Owner INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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