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Sea urchin-shaped MOFs@COFs core-shell structure material as well as preparation method and application thereof

A core-shell structure, sea urchin-shaped technology, applied in analytical materials, chemical instruments and methods, material analysis by electromagnetic means, etc., can solve problems to be developed, achieve high-throughput qualitative and quantitative analysis, effective separation and transfer Effect

Active Publication Date: 2021-12-28
INST OF ANALYSIS GUANGDONG ACAD OF SCI (CHINA NAT ANALYTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regardless of whether it is MOFs or COFs, the application in the field of SALDI MS analysis is still to be developed

Method used

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  • Sea urchin-shaped MOFs@COFs core-shell structure material as well as preparation method and application thereof
  • Sea urchin-shaped MOFs@COFs core-shell structure material as well as preparation method and application thereof
  • Sea urchin-shaped MOFs@COFs core-shell structure material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] An embodiment of the sea urchin-shaped MOFs@COFs core-shell structure material of the present invention, figure 1 It is a schematic diagram of the synthesis process of the sea urchin-shaped MOFs@COFs core-shell structure material described in this example, as follows:

[0059] (1) Weigh 6.2mg (0.03mmol) of 2,3,5,6-tetrafluoro-p-benzaldehyde into a 10mL glass bottle, add 0.14mL N,N-dimethylacetamide, and sonicate until the reactants are completely dissolved Add 0.6mL of acetonitrile and 1.4mL of o-dichlorobenzene in sequence, and mix well to obtain a clear and transparent solution, which is designated as solution A;

[0060] (2) 10.0mg (0.01mmol) of new NH 2 -MIL-125(Ti) powder was added to solution A, and ultrasonically dispersed to obtain solution B;

[0061] (3) Add 0.24 mL of 12 mol / L aqueous acetic acid solution as a catalyst for the reaction, add it to solution B, mix well, and ultrasonicate for 30 minutes at room temperature to make NH 2 -The amino group in MIL...

Embodiment 2

[0069] An embodiment of the sea urchin-shaped MOFs@COFs core-shell structure material of the present invention, the preparation method of the sea urchin-shaped MOFs@COFs core-shell structure material described in this embodiment is as follows:

[0070] (1) Weigh 6.2mg (0.03mmol) of 2,3,5,6-tetrafluoro-p-benzaldehyde into a 10mL glass bottle, add 0.12mL N,N-dimethylacetamide, and sonicate until the reactant is completely dissolved Add 0.6mL of acetonitrile and 1.32mL of o-dichlorobenzene in sequence, and mix thoroughly to obtain a clear and transparent solution, which is designated as solution A;

[0071] (2) 10.0mg (0.01mmol) of new NH 2 -MIL-125(Ti) powder was added to solution A, and ultrasonically dispersed to obtain solution B;

[0072] (3) Add 0.23 mL of 12 mol / L aqueous acetic acid solution as a catalyst for the reaction, add it to solution B, mix well, and ultrasonicate for 30 minutes at room temperature to make NH 2 -The amino group in MIL-125(Ti) is condensed with t...

Embodiment 3

[0079] An embodiment of the sea urchin-shaped MOFs@COFs core-shell structure material of the present invention, the preparation method of the sea urchin-shaped MOFs@COFs core-shell structure material described in this embodiment is as follows:

[0080] (1) Weigh 6.2mg (0.03mmol) of 2,3,5,6-tetrafluoro-p-benzaldehyde into a 10mL glass bottle, add 0.15mL N,N-dimethylacetamide, and sonicate until the reactants are completely dissolved Add 0.45mL of acetonitrile and 1.35mL of o-dichlorobenzene in sequence, and mix well to obtain a clear and transparent solution, which is designated as solution A;

[0081] (2) 10.0mg (0.01mmol) of new NH 2 -MIL-125(Ti) powder was added to solution A, and ultrasonically dispersed to obtain solution B;

[0082] (3) Add 0.25 mL of 12 mol / L aqueous acetic acid solution as a catalyst for the reaction, add it to solution B, mix well, and ultrasonicate for 30 minutes at room temperature to make NH 2 -The amino group in MIL-125(Ti) is condensed with the al...

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Abstract

The invention discloses a sea urchin-shaped MOFs@COFs core-shell structure material as well as a preparation method and application thereof, and relates to the technical field of synthetic materials. The sea urchin-shaped MOFs@COFs core-shell structure material disclosed by the invention is prepared from NH2-MIL-125 (Ti) and COFs; according to the COFs, an imine bond connecting structure of 2, 3, 5, 6-tetrafluoro p-dibenzaldehyde and 2, 4, 6-tri (4-aminophenyl)-1, 3, 5-triazine is used as a structural unit. The material presents a sea urchin-like morphology with an NH2-MIL-125 (Ti) nanowafer as a core and a COFs nanowire as a shell layer, the material can be used as an adsorbent and an auxiliary matrix to effectively enrich fluoroquinolone antibiotics in a complex environment and a biological liquid sample, and then surface-assisted laser desorption plasma mass spectrometry is used for analyzing, relatively high analysis speed and relatively high sensitivity are achieved.

Description

technical field [0001] The invention relates to the technical field of synthetic materials, in particular to a sea urchin-shaped MOFs@COFs core-shell structure material and its preparation method and application. Background technique [0002] Antibiotics are a class of chemical substances that can interfere with the development and function of living cells of pathogens. Since their discovery, antibiotics have saved countless lives and are now widely used in disease prevention and agricultural production. However, with the change of global climate, the increase of population and the resulting increase in the demand for animal protein, the total consumption of antibiotics is increasing year by year and there is a phenomenon of abuse. A large number of synthetic antibiotics flow into the environment through excretion and breeding wastewater, causing the accumulation of resistance genes in them, resulting in the frequent appearance of "super bacteria", which seriously threatens ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/285B01J20/30B01D15/08G01N27/64
CPCB01J20/285B01D15/08G01N27/64Y02A50/30
Inventor 侯雅君肖雪方舒婷
Owner INST OF ANALYSIS GUANGDONG ACAD OF SCI (CHINA NAT ANALYTICAL
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