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A kind of polymer non-covalently modified carbon nanotube and its application

A non-covalent modification and carbon nanotube technology, applied in the field of environmental pollution control, can solve problems such as harsh equipment conditions, achieve the effects of low equipment requirements, simple preparation methods, and broad market prospects

Active Publication Date: 2021-11-05
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to improve the catalytic activity of carbon materials, N doping is a very effective way, but the modification method needs to be realized under high temperature conditions, and the equipment conditions are relatively harsh.

Method used

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  • A kind of polymer non-covalently modified carbon nanotube and its application
  • A kind of polymer non-covalently modified carbon nanotube and its application
  • A kind of polymer non-covalently modified carbon nanotube and its application

Examples

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Effect test

Embodiment 1

[0034] A polymer non-covalently modified carbon nanotube, the specific preparation process is as follows:

[0035] Disperse 50 mg of multi-walled carbon nanotubes and 5 mL of polyethyleneimine aqueous solution with a concentration of 0.1 g / L in 50 mL of water, sonicate for 2 h (40 Hz, 35 ° C), stir overnight, then centrifuge, wash with water and ethanol three times, and finally The polyethylenimine non-covalently modified multi-walled carbon nanotubes can be prepared by vacuum drying at 70-100°C.

[0036] By replacing the multi-walled carbon nanotubes used above with single-walled carbon nanotubes, polyethyleneimine non-covalently modified single-walled carbon nanotubes can also be prepared.

[0037] Table 1 Elemental analysis results of multi-walled carbon nanotubes before and after modification

[0038] Material C(％) N(％) H(％) multi-walled carbon nanotubes 92.87 0.27 1.59 Polyethyleneimine non-covalent modification of multi-walled carbon nanotubes ...

Embodiment 2

[0040] A polymer non-covalently modified carbon nanotubes. The specific preparation process is the same as that in Example 1, except that the polymer used is polydiallyldimethylammonium chloride.

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Abstract

The invention discloses a polymer non-covalently modified carbon nanotube and an application thereof. The polymer non-covalently modified carbon nanotubes are prepared through the following process: dispersing the carbon nanotubes and polymer aqueous solution in water, ultrasonic treatment, stirring, centrifuging, washing, and drying, the carbon polymer non-covalent Covalent modification of carbon nanotubes; the polymer aqueous solution is polyethyleneimine aqueous solution or polydiallyl dimethyl ammonium chloride aqueous solution. The polymer non-covalently modified carbon nanotubes of the present invention can quickly and efficiently catalyze and activate persulfate to degrade organic pollutants by mediating electron transfer at room temperature, and are applicable to a wide range of pH, and are less affected by natural organic matter in the environment. Small; the degradation method of organic pollutants in water of the present invention has low cost, high treatment efficiency at normal temperature, mild reaction conditions, simple operation, low requirements on equipment, economical and efficient, and the organic matter in natural water body has little interference to the treatment effect , has a broad market prospect.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, and to an advanced oxidation technology of organic matter in water, more specifically, to a polymer non-covalently modified carbon nanotube and its application. Background technique [0002] At present, the treatment methods of organic polluted wastewater mainly include physical adsorption method, biological treatment method and advanced oxidation method. Physical adsorption is one of the most commonly used treatment technologies in sewage treatment at present, but the adsorption can only reduce the concentration of pollutants in the water body, but cannot be completely removed, and the pollutants may re-enter the water environment. Traditional biological treatment technology is not ideal for the treatment of some wastewater containing organic pollutants with high concentration and stable chemical structure, such as pesticides, papermaking water, printing and dyeing wastew...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/06C02F1/72C02F101/30
CPCB01J31/069C02F1/725C02F2101/30
Inventor 欧阳钢锋王俊慧付琦郁家星
Owner SUN YAT SEN UNIV
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