Preparation method of carbon nanotube/UiO-66-NH2 nano-composite material

A nano-composite material, uio-66-nh2 technology, applied in chemical instruments and methods, water/sewage treatment, adsorbed water/sewage treatment, etc., can solve the problems of decreased adsorption capacity and surface area, and sharply decreased structural stability, etc. Achieve excellent adsorption efficiency, improve agglomeration and low production cost

Active Publication Date: 2019-04-09
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, like other MOFs, UiO-66-NH 2 Extremely sensitive to water, its structural stability will drop sharply when exposed to water, and its adsorption capacity and surface area will also decrease significantly after being exposed to humid air

Method used

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  • Preparation method of carbon nanotube/UiO-66-NH2 nano-composite material
  • Preparation method of carbon nanotube/UiO-66-NH2 nano-composite material
  • Preparation method of carbon nanotube/UiO-66-NH2 nano-composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) A purified mixed solution of multi-walled carbon nanotubes.

[0037] The MWCNTs were immersed in a mixed acid of sulfuric acid and nitric acid with a volume ratio of 3:1, stirred at 80 °C for 24 h, then filtered and washed with deionized water until neutral, and finally dried at 70 °C. The resulting powder is called purified multi-walled carbon nanotubes.

[0038] (2) Preparation of carbon nanotubes / UiO-66-NH by hydrothermal method 2 composite material

[0039] ZrCl 4 and 2-aminoterephthalic acid were added to N,N-dimethylamide, followed by a small amount of acetic acid. Control ZrCl 4 : 2-aminoterephthalic acid: acetic acid: N,N-dimethylamide molar ratio is 1:1:100:500, then add UiO-66-NH to the mixed solution 2 For multi-walled carbon nanotubes that have been functionalized with a material mass of 6 wt%, the mixed solution was ultrasonically treated for 10 minutes, and then stirred overnight. After stirring for 12 hours the mixture was transferred to an auto...

Embodiment 2

[0051] With the control ZrCl in embodiment 1 4 : 2-aminoterephthalic acid: acetic acid: N,N-dimethylamide molar ratio is 1:1:100:500, change to control ZrCl 4 : 2-aminoterephthalic acid: acetic acid: the molar ratio of N,N-dimethylamide is 1:1:100:550, and the others are the same as in Example 1.

Embodiment 3

[0053] With the control ZrCl in embodiment 1 4 : 2-aminoterephthalic acid: acetic acid: N,N-dimethylamide molar ratio is 1:1:100:500, then add UiO-66-NH to the mixed solution 2 The functionalized multi-walled carbon nanotubes with 6wt% of the material quality are changed to control ZrCl 4 : 2-aminoterephthalic acid: acetic acid: N,N-dimethylamide molar ratio is 1:1:100:450, then add UiO-66-NH to the mixed solution 2 The functionalized multi-walled carbon nanotubes with a mass of 4 wt% of the material are the same as in Example 1.

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Abstract

The invention belongs to the field of preparation of a metal organic framework material, and relates to a preparation method of a novel adsorption material carbon nano-tube/UiO-66-NH2. The preparationmethod comprises the following steps: firstly, performing acidizing treatment on a multi-wall carbon nano-tube to ensure that carboxyl located at the defect sites of the carbon nano-tube is functionalized and then a coordinate bond is formed by simultaneously an organic ligand and metal ions, and performing self-assembly to form a nano-composite material. The carbon nano-tube participates in theUiO-66-NH2 material in a form of physical blending, and the carbon nano-tube/UiO-66-NH2 composite material is also formed in a form of chemical bond. Because addition of the carbon nano-tube, the water stability of the metal organic framework material is obviously improved, and the heat stability, the specific surface area and the pore volume aperture of the composite material are all improved toa certain extent, and thus, the composite material has more excellent adsorption performance. The preparation method is simple and effective, and a new way is provided for preparing the nano-tube/MOFscomposite material.

Description

technical field [0001] The invention belongs to the technical field of preparation of metal organic framework materials, in particular to a carbon nanotube / UiO-66-NH 2 Preparation methods of nanocomposites. Background technique [0002] With the continuous improvement of modern medical care, pharmaceuticals and personal care products (PPCPs) are increasingly becoming the main emerging pollutants. Ketoprofen (KET), as a typical non-steroidal anti-inflammatory drug, has antipyretic, analgesic and anti-inflammatory effects, and is widely used in the treatment of osteoarthritis, ankylosing spondylitis, and rheumatoid arthritis. , and non-rheumatic disease or postoperative pain. After ketoprofen enters the water body, even at trace levels, it will pose a threat to aquatic ecosystems such as drinking water and reclaimed water, and at the same time affect human health, causing the human body to produce estrogen, headache, tinnitus and other adverse reactions. Therefore, it is pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F101/34C02F101/30
CPCB01J20/20B01J20/226B01J2220/46B01J2220/4806B01J2220/4812C02F1/283C02F1/285C02F2101/30C02F2101/34
Inventor 冯胜刘曙光朱贵亮倪梓秋
Owner CHANGZHOU UNIV
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