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Multi-walled carbon nanotube/metal organic framework composite material and preparation method thereof

A technology of multi-walled carbon nanotubes and metal organic frameworks, which is applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc. Adsorption performance, increased use of MOFs, etc., to achieve the effect of simple treatment process and adsorption equipment, high application value and commercial value, and fast adsorption speed

Active Publication Date: 2019-10-18
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, metal-organic frameworks have the problem of poor stability in aqueous solution, and cannot obtain good adsorption performance. At the same time, due to poor stability, the amount of MOFs used in the liquid phase will increase. Compared with the use in the gas phase, Will greatly increase the processing cost, so the application in the liquid phase is greatly limited
In addition, the existing preparation methods of metal organic framework materials have problems such as complicated steps, many types of raw materials, and long time consumption, which are not conducive to low-cost and mass production of metal organic framework materials

Method used

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  • Multi-walled carbon nanotube/metal organic framework composite material and preparation method thereof
  • Multi-walled carbon nanotube/metal organic framework composite material and preparation method thereof
  • Multi-walled carbon nanotube/metal organic framework composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A multi-walled carbon nanotube / metal-organic framework composite material comprising multi-walled carbon nanotubes and MIL-53(Fe), wherein the multi-walled carbon nanotubes are doped in the MIL-53(Fe).

[0037] In this embodiment, the mass ratio of multi-walled carbon nanotubes to MIL-53(Fe) is 0.2.

[0038] A method for preparing the multi-walled carbon nanotube / metal-organic framework composite material of the present embodiment, comprising the following steps:

[0039] (1) Put 2g of unmodified multi-walled carbon nanotubes into 100mL of a mixed solution of concentrated sulfuric acid and concentrated nitric acid (the volume ratio of concentrated sulfuric acid and concentrated nitric acid in the mixed solution is 1:3), at 70°C, Stir at 400 r / min for 24 h, modify the multi-walled carbon nanotubes, wash the modified multi-walled carbon nanotubes with deionized water for 6 times, and dry at 70 °C for 10 h to obtain the modified multi-walled carbon nanotubes Tube.

[004...

Embodiment 2

[0047] A multi-walled carbon nanotube / metal-organic framework composite material, which is basically the same as the multi-walled carbon nanotube / metal-organic framework composite material in Example 1, the difference being: the multi-walled carbon nanotube and MIL in Example 2 The mass ratio of -53(Fe) is 0.01.

[0048] A preparation method of the multi-walled carbon nanotube / metal-organic framework composite material of the above-mentioned embodiment is basically the same as the preparation method in Example 1, except that: in step (2) of Example 2, more The amount of walled carbon nanotubes used is 0.0109 g.

[0049] The multi-walled carbon nanotube / metal organic framework composite material (MWCNT / MIL-53(Fe)) prepared in Example 2 is labeled as MWCNT / MIL-53(Fe)-1%.

Embodiment 3

[0051] A multi-walled carbon nanotube / metal-organic framework composite material, which is basically the same as the multi-walled carbon nanotube / metal-organic framework composite material in Example 1, the difference being: the multi-walled carbon nanotube and MIL in Example 3 The mass ratio of -53(Fe) was 0.05.

[0052] A method for preparing the multi-walled carbon nanotube / metal-organic framework composite material of the above-mentioned embodiment is basically the same as the preparation method in Example 1, except that: in step (2) of Example 3, more The amount of walled carbon nanotubes used is 0.0545 g.

[0053] The multi-walled carbon nanotube / metal organic framework composite material (MWCNT / MIL-53(Fe)) prepared in Example 3 is labeled as MWCNT / MIL-53(Fe)-5%.

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Abstract

The invention discloses a multiwalled carbon nanotube / metal-organic framework composite material and a preparation method thereof. The composite material is prepared from a multiwalled carbon nanotube and MIL-53(Fe). The preparation method comprises the following steps of dispersing a modified multiwalled carbon nanotube, terephthalic acid and ferric trichloride hexahydrate into an organic solvent for carrying out solvothermal reaction, and thus obtaining the multiwalled carbon nanotube / metal-organic framework composite material. The composite material provided by the invention has the advantages of good heat stability, good water stability, high adsorption efficiency and the like, and is a compound adsorbent capable of being adopted widely and high-efficiently treating antibiotic wastewater; the preparation method has the advantages of simplicity in operation, less raw material types, low cost and the like, meets the practical production requirement, and can be used for preparing the multiwalled carbon nanotube / metal-organic framework composite material in a low cost and large scale way.

Description

technical field [0001] The invention belongs to the field of composite materials, and relates to a multi-walled carbon nanotube / metal organic framework composite material and a preparation method thereof. Background technique [0002] As a porous functional material, metal-organic frameworks (MOFs) are mainly composed of central metal ions and organic ligands through chemical bonds. Due to their ultra-high porosity, large specific surface area, adjustable pore size and shape As well as easy functionalization, it has become a research hotspot. However, metal-organic frameworks have the problem of poor stability in aqueous solution, and cannot obtain good adsorption performance. At the same time, due to poor stability, the amount of MOFs used in the liquid phase will increase. Compared with the use in the gas phase, It will greatly increase the processing cost, so the application in the liquid phase is greatly limited. In addition, the existing methods for preparing metal-or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22C02F1/28C02F101/30
Inventor 熊炜平曾光明杨朝晖赖萃张辰徐锐张燕茹李鑫程敏胡亮周成赟周曼
Owner HUNAN UNIV
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