Zirconium-base metal organic frame composite material and preparing method and application thereof

A technology of organic framework and composite materials, which is applied in the direction of analyzing, analyzing materials, and electrochemical variables of materials through chemical reactions of materials, which can solve the problems of low sensitivity, achieve high specific surface area, good functional diversity, and simple operation Effect

Active Publication Date: 2019-04-19
ANHUI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the tendency of silver nanoparticles to agglomerate, the sensitivity is low in the detection of hydrogen peroxide by electrochemiluminescence.

Method used

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  • Zirconium-base metal organic frame composite material and preparing method and application thereof
  • Zirconium-base metal organic frame composite material and preparing method and application thereof
  • Zirconium-base metal organic frame composite material and preparing method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] A method for preparing a zirconium-based metal-organic framework composite material, comprising the following steps:

[0047] S1: Weigh 21mg zirconium chloride (ZrCl 4 ) was dissolved in 3mL N,N-dimethylformamide (DMF), and ultrasonically dissolved for 20-30 minutes;

[0048] S2: Weigh 43.4mg of 2-amino-terephthalic acid (NH 2 -H 2 BDC) was dissolved in 1 mL of N,N-dimethylformamide, and ultrasonically dissolved for 8-10 minutes;

[0049] S3: Mix the solutions obtained in steps S1 and S2, add 2.5 mL of glacial acetic acid dropwise, and stir for 20-30 minutes to make the mixture uniform;

[0050] S4: Add the mixed solution containing zirconium chloride, 2-amino-terephthalic acid, and glacial acetic acid into a 20mL reactor, then heat the autoclave at 120°C for 24h, and wait for the reactor to cool down to room temperature. N,N-dimethylformamide and ethanol were washed three times respectively, and then dried in a vacuum oven at 80°C for 12 hours to obtain UiO-66-NH ...

Embodiment 2

[0055] A zirconium-based metal-organic framework composite for the detection of hydrogen peroxide (H 2 o 2 ) The preparation of modified electrode comprises the following steps:

[0056] S1: Weigh 2mg of AgNPs@Ru-UiO-66-NH 2 Dissolve the material in 100 μL of phosphate buffered saline PBS (0.1M, PH=7.5), sonicate for 8-10 minutes to mix evenly, and obtain AgNPs@Ru-UiO-66-NH containing 2 buffer solution of the material;

[0057] S2: Take 10 μL containing AgNPs@Ru-UiO-66-NH 2 The buffer solution of the material is added dropwise on the polished glassy carbon electrode, and after natural drying, 5 μL of nafion solution (5%) is added dropwise on the surface to fix the material, and then a zirconium-based metal-organic framework composite material can be obtained to detect hydrogen peroxide. (H 2 o 2 ), and then put it at 4°C in the dark for later use.

Embodiment 3

[0059] A zirconium-based metal-organic framework composite for the detection of hydrogen peroxide (H 2 o 2 ), the specific detection method is:

[0060] S1: Weigh 2mg of AgNPs@Ru-UiO-66-NH respectively 2 , 2mg UiO-66-NH 2 and 2 mg Ru-UiO-66-NH 2 The material was dissolved in 100 μL of phosphate buffered saline PBS (0.1M, PH=7.5), sonicated for 8-10 minutes to mix evenly, each of which contained AgNPs@Ru-UiO-66-NH 2 , UiO-66-NH 2 and Ru-UiO-66-NH 2 buffer solution of the material;

[0061] S2: Take 10 μL containing AgNPs@Ru-UiO-66-NH 2 , UiO-66-NH 2 and Ru-UiO-66-NH 2 The buffer solution of the material was added dropwise on the polished glassy carbon electrode, and after drying naturally, 5 μL nafion solution (5%) was added dropwise on the surface to fix the material, and then the obtained modified electrodes were placed at 4 °C to avoid Light spare.

[0062] S3: Immerse the three kinds of modified glassy carbon electrodes obtained in step S2 into 3mL of 0.1MPBS pho...

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Abstract

The invention discloses a zirconium-base metal organic frame composite material and a preparing method and application thereof. By controlling experiment conditions, a UiO-66-NH2 metal organic frame material with the grain diameter of 100 nm is obtained, and serves as a loading matrix, a signal molecule tri-(2,2'-dipyridyl) ruthenium dichloride is embedded in a pore way structure regularly and evenly distributed, a Ru-UiO-66-NH2 material is obtained, loading of silver nanoparticles is conducted through the high specific surface area of the Ru-UiO-66-NH2 material, and the obtained Ru-UiO-66-NH2material is applied to detection of small-molecule hydrogen peroxide with the electrogenerated chemiluminescence detection technology. Through the method, interference of background signals can be avoided, optical signals are stable, and the sensitivity is high.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a zirconium-based metal-organic framework composite material and a preparation method and application thereof. Background technique [0002] Metal-organic frameworks (MOFs) are a new class of microporous crystalline materials based on the self-assembly of organic ligands and metal ions. Metal ions or metal clusters act as nodes, and organic ligands act as bridges, often forming long-range ordered crystalline materials with regular channels, which are new materials that have developed rapidly in the field of coordination chemistry in recent decades. Compared with traditional inorganic porous materials, MOFs materials have excellent properties, such as: highly ordered porous structure, high specific surface area, adjustable structure components, controllable size and shape, functional diversity and good biological properties. compatibility etc. Based on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00G01N21/76G01N27/30
CPCC08G83/008G01N21/76G01N27/308
Inventor 王广凤冯秀云
Owner ANHUI NORMAL UNIV
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