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Phosphonic acid-functionalized polymer/graphene nanobelt composite aerogel and preparation method and application thereof

A graphene nanoribbon and composite aerogel technology, which is applied in aerogel preparation, alkali metal compounds, chemical instruments and methods, etc., can solve problems such as low adsorption capacity, achieve uniform distribution, no environmental pollution, and preparation method simple effect

Inactive Publication Date: 2020-07-28
EAST CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention is to solve the technical problem of low adsorption capacity of existing graphene airgel adsorption materials, and provide phosphonic acid functionalized polymer / graphene nanoribbon composite airgel and its preparation method and application

Method used

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  • Phosphonic acid-functionalized polymer/graphene nanobelt composite aerogel and preparation method and application thereof
  • Phosphonic acid-functionalized polymer/graphene nanobelt composite aerogel and preparation method and application thereof
  • Phosphonic acid-functionalized polymer/graphene nanobelt composite aerogel and preparation method and application thereof

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specific Embodiment approach 1

[0023] Embodiment 1: The phosphonic acid functionalized polymer / graphene nanoribbon composite aerogel of this embodiment is based on graphene oxide nanoribbon as a substrate, and a polymer with a phosphonic acid group as a functional group is grafted on the substrate. airgel.

specific Embodiment approach 2

[0024] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass percentage of phosphorus in the phosphonic acid functionalized polymer / graphene nanoribbon composite airgel is 15% to 25%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Specific embodiment three: the preparation method of the phosphonic acid functionalized polymer / graphene nanoribbon composite aerogel described in specific embodiment one, carry out according to the following steps:

[0026] 1. Using potassium permanganate oxidation method to axially cut multi-walled carbon nanotubes to make graphene oxide nanobelts;

[0027] 2. Add trimethylolpropane trimethacrylate, vinyl phosphonic acid and azobisisobutyronitrile to the organic solvent and mix evenly, then add graphene oxide nanoribbons, at a temperature of 20-30°C Stir at low temperature for 1-5 hours, then transfer to a reaction kettle, place in an oven at a temperature of 100-180°C for solvothermal reaction for 24 hours, take it out, cool to room temperature, and obtain a solid;

[0028] 3. Soaking and washing the solid matter in deionized water, washing with ethanol, and freeze-drying to obtain the phosphonic acid functionalized polymer / graphene nanobelt composite airgel.

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Abstract

The invention discloses phosphonic acid-functionalized polymer / graphene nanobelt composite aerogel and a preparation method and application thereof, belonging to the field of preparation methods and application of graphene nanobelt composite aerogel. The invention aims to solve the technical problem of low adsorption capacity of an existing graphene aerogel adsorption material. The phosphonic acid-functionalized polymer / graphene nanobelt composite aerogel is aerogel which takes a graphene oxide nanobelt as a matrix that is grafted with a polymer using phosphonic acid as a functional group. Thepreparation method comprises the following steps: 1, preparing a graphene oxide nanobelt; 2, adding trimethylolpropane trimethacrylate, vinylphosphonic acid, azodiisobutyronitrile and the graphene oxide nanobelt into an organic solvent, and carrying out a solvothermal reaction to obtain a solid; and 3, successively carrying out washing, freezing and drying to obtain the composite aerogel, whereinthe grafting rate of phosphorus in the aerogel is 15-25%. The aerogel can be used as an adsorbent for treating thorium-containing wastewater, the adsorption capacity of the aerogel is 300-380 mg / g, and the aerogel can be used in the field of nuclear wastewater treatment.

Description

technical field [0001] The invention relates to a preparation method and application of graphene nanobelt composite airgel, and belongs to the fields of material synthesis and radioactive waste water treatment. Background technique [0002] Nuclear science and technology have been widely used in many fields such as industry, agriculture, and medicine, bringing great convenience and benefits to people's production and life. However, during the development and utilization of nuclear science and technology, a large amount of radioactive waste will be produced. After the radioactive waste water enters the environment, it will cause water and soil pollution, and may enter the human body through various channels, causing harm to the environment and human beings. Radioactive wastewater treatment methods include ion exchange, biological treatment, membrane separation, adsorption, etc. [0003] Among these methods, the adsorption method has the advantages of convenience and quicknes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30B01J13/00C02F1/28C02F101/20
CPCB01J20/264B01J20/28047B01J13/0091C02F1/285C02F2101/20
Inventor 王云吴振宇李阳刘佐聪胡学文涂鸿王长福刘妍袁定重刘峙嵘
Owner EAST CHINA UNIV OF TECH
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