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Imidazole porous polymer based on graphene oxide, as well as preparation method and application thereof

A graphene oxide and porous polymer technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as inability to apply carbon dioxide separation, unfavorable recycling of adsorbents, affecting application prospects, etc., and achieve excellent thermal stability , low cost and high yield

Inactive Publication Date: 2013-09-11
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The low temperature distillation method has a wide range of applications and has a good separation effect, but the disadvantage is that the energy consumption is huge
[0006] (2) Membrane technology can be widely used in the separation of high-concentration carbon dioxide, but cannot be applied to the separation of low-concentration carbon dioxide
[0007] (3) The liquid adsorbents commonly used in the liquid adsorption method include alkaline media such as dilute amine solutions (such as monoethanolamine) and ice ammonia water. The adsorption process often involves chemical adsorption, which is not conducive to the recycling of adsorbents.
However, such organic porous polymers may have poor thermal stability in some cases (Sabo M, Henschel A, H, Klemm E, Kaskel S.J.Mater.Chem.2007, 17:3827-3832), in addition, some metal-organic porous polymers also have certain toxicity (Férey G, Mellot-Draznieks C, Serre C, Millange F, Dutour J, SurbléS, Margiolaki I.Science, 2005, 309: 2040-2042), thus affecting its broad application prospects

Method used

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  • Imidazole porous polymer based on graphene oxide, as well as preparation method and application thereof
  • Imidazole porous polymer based on graphene oxide, as well as preparation method and application thereof
  • Imidazole porous polymer based on graphene oxide, as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0071] Add 30 mL of polyphosphoric acid into a 100 mL round bottom flask, and stir at 130° C. for 1 hour using a mechanical stirrer. Then add 36mg graphene oxide (size is 100~300nm, specific surface area is 20~40m 2 g -1 ) and 43mg of 3,3',4,4'-tetraaminobiphenyl, and then reacted at 150° C. for 1 day under nitrogen protection.

[0072] After the reaction was completed and the temperature of the reaction system dropped to room temperature, 100 mL of distilled water was added to the reaction system. Stir to obtain a black suspension, suction filter to obtain a solid, and wash the filter cake with water, ethanol and acetone in sequence. Then put the solid in a blast oven and dry it at 80°C. Finally, 60 mg of black powder was obtained.

Embodiment 2

[0074] Add 50 mL of polyphosphoric acid into a 100 mL round bottom flask, and stir at 130° C. for 1 hour using a mechanical stirrer. Then add 36mg graphene oxide (size is 0.1~5μm, specific surface area is 20~40m 2 g -1 ) and 43mg of 3,3',4,4'-tetraaminobiphenyl, and then reacted at 150° C. for 1 day under nitrogen protection.

[0075] After the reaction was completed and the temperature of the reaction system dropped to room temperature, 100 mL of distilled water was added to the reaction system. Stir to obtain a black suspension, suction filter to obtain a solid, and wash the filter cake with water, ethanol and acetone in sequence. Then put the solid in a blast oven and dry it at 80°C. Finally, 60 mg of black powder was obtained.

Embodiment 3

[0077] Add 30 mL of polyphosphoric acid into a 100 mL round bottom flask, and stir at 130° C. for 1 hour using a mechanical stirrer. Then add 36mg graphene oxide (size is 100~300nm, specific surface area is 20~40m 2 g -1 ) and 43mg of 3,3',4,4'-tetraaminobiphenyl, and then reacted at 190° C. for 1 day under nitrogen protection.

[0078] After the reaction was completed and the temperature of the reaction system dropped to room temperature, 100 mL of distilled water was added to the reaction system. Stir to obtain a black suspension, suction filter to obtain a solid, and wash the filter cake with water, ethanol and acetone in sequence. Then put the solid in a blast oven and dry it at 80°C. Finally, 60 mg of black powder was obtained.

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Abstract

The invention provides an imidazole porous polymer based on a graphene oxide. The porous polymer is prepared from graphene oxide or a derivative thereof by means of cross-linking; the graphene oxide comprises an oxygen-containing functional group; the oxygen-containing functional group comprises a carboxyl; the derivative of the graphene oxide is a reaction product of the graphene oxide, chloroacetic acid and N-2-ethoxyl-iminodiacetic acid or N-2-ethoxyl-ethylenediamine dihydrochloride-N,N',N'-nitrilotriacetic acid; the molecular structure of the ortho-diamino compound contains two or more ortho-diamino parts. The imidazole porous polymer provided by the invention has high specific surface area, good carbon dioxide capture capability, excellent thermal stability, high specific capacitance value and good super-capacitor stability. The invention further relates to the reparation method of the imidazole porous polymer, and the application of the imidazole porous polymer in the field of carbon dioxide adsorption and the field of super-capacitors.

Description

technical field [0001] The invention relates to a graphene oxide-based imidazole porous polymer, a preparation method thereof and the application of the porous polymer in carbon dioxide adsorption and supercapacitors. Background technique [0002] Graphene is a carbon nanomaterial with a two-dimensional honeycomb network structure, which is formed by the close connection of a single layer of carbon atoms. It has atomic-level thickness, excellent electrical conductivity, and excellent chemical and thermal stability. As a carbon nanomaterial, it has a large specific surface area and has important application prospects in field effect transistors, supercapacitors, transparent electrodes, chemical biosensors, and drug and gene carriers. [0003] Graphene has become a new research hotspot because of its large specific surface area, low density and environmental friendliness. Graphene oxide is a graphene material with oxygen-containing functional groups on the surface prepared by...

Claims

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Application Information

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IPC IPC(8): C08G73/06B01J20/26
CPCY02C20/40
Inventor 韩宝航崔义承倩怡吴海平周鼎魏志祥
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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