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Nano polymer ring, nano carbon ring and preparation method of nano polymer ring and nano carbon ring

A nano-polymer and nano-carbon ring technology, applied in the direction of nano-carbon, nanotechnology, etc., can solve the problems that cannot be converted into ring-shaped porous carbon materials, it is difficult to obtain a ring structure, and the size distribution is wide, so as to achieve a good ring shape The effect of simple shape and process and uniform size

Active Publication Date: 2021-03-16
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing method of self-assembly of rod-shaped micelles to form polymer rings has great limitations. Because there is a step of rod-shaped precursors to induce the formation of polymer rings, the products often coexist with the precursors, and the uniformity is not high and the size The distribution is wide, so it is difficult to obtain a ring structure with uniform size; moreover, the existing reported polymer ring micelles have no carbon residue during pyrolysis, and cannot be converted into ring-shaped porous carbon materials

Method used

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  • Nano polymer ring, nano carbon ring and preparation method of nano polymer ring and nano carbon ring
  • Nano polymer ring, nano carbon ring and preparation method of nano polymer ring and nano carbon ring
  • Nano polymer ring, nano carbon ring and preparation method of nano polymer ring and nano carbon ring

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Effect test

Embodiment 1

[0034] Weigh 400 mg of surfactant F127, add 40 mL of deionized water and stir to dissolve for 1 h. The F127 aqueous solution was heated up to 90°C, then 150 mg of dodecanol was added, and a translucent white emulsion was obtained after rapid stirring for 2 hours. The obtained white emulsion was placed at 20° C. for 120 h to obtain a white colloidal solution. Then another 440mg of resorcinol was weighed and placed in a 500mL round bottom flask, 360mL of deionized water was added, after the resorcinol was fully dissolved, 584 μL of formaldehyde solution (37wt%) was added successively, the above white colloidal solution, 60mg of n-propylamine , after stirring and reacting for 1 h, a white colloidal solution was obtained, and the obtained white colloidal solution was heated to 70° C. and stirred for 6 h. After the reaction is completed, the reactant is centrifuged at 8000 r / min for 5 min, washed with deionized water, and the product is dried to obtain monodisperse nanopolymer rin...

Embodiment 2

[0036] Place the nanopolymer ring prepared in Example 1 into a carbonization furnace for carbonization, protect it with argon from room temperature to 400°C at a rate of 3°C / min, and keep the temperature constant for 120 minutes; then raise the temperature from 400°C to The final carbonization temperature is 600°C, and the temperature is kept constant for 120 minutes. The obtained nano-carbon rings with shape retention have a BET specific surface area of ​​802 cm 3 / g, total pore volume 0.28cm 3 / g, the pore size is concentrated at 0.5nm. The nano-carbon obtained in this example has a diameter of 592±67nm and a cross-sectional circle diameter of 108±10nm.

Embodiment 3

[0038]Weigh 200mg of surfactant F127, add 20mL of deionized water, stir and dissolve at 20°C for 1h. The F127 aqueous solution was heated up to 80°C, then 100 mg of myristyl alcohol was added, and a translucent white emulsion was obtained after rapid stirring for 3 hours. The obtained white emulsion was placed at 30° C. for 96 h to obtain a white colloidal solution. Another 440mg of resorcinol was weighed and placed in a 500mL round bottom flask, and 380mL of deionized water was added. After the resorcinol was fully dissolved, 584 μL of formaldehyde solution (37wt%), the above-mentioned white colloidal solution, 60mg of n-propylamine, After stirring and reacting for 0.5 h, a white colloidal solution was obtained, which was heated to 90° C. and stirred for 4 h. After the reaction is completed, the reactant is centrifuged at 8000 r / min for 5 min, washed with deionized water, and the product is dried to obtain monodisperse nanopolymer rings. Protected by argon, the temperature ...

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Abstract

The invention provides a nano polymer ring, a nano carbon ring and a preparation method of the nano polymer ring and the nano carbon ring. Long-chain fatty alcohol is used as a phase change material,a surfactant, phenol, aldehyde and organic amine are used as raw materials, water is used as a solvent, directed self-assembly and polymerization of molecules are induced through phase inversion to obtain a nano polymer ring, and the nano polymer ring is carbonized to obtain a nano carbon ring. The diameter of the nano polymer ring is 120-1100nm, and the diameter of the cross section circle is 30-300nm. The diameter of the nano carbon ring is 100-1000nm, and the diameter of the section circle is 20-280nm. The invention relates to a method for preparing a nano polymer ring and a carbon ring based on phase inversion induced molecule directed self-assembly. By changing the ratio of the long-chain fatty alcohol phase-change material to phenol, the diameters of section circles of the polymer ring and the carbon ring can be changed, and the regulation and control of a ring structure, which can be hardly achieved by other methods, is achieved.

Description

technical field [0001] The invention relates to the controllable preparation of nano polymer rings and nano carbon rings, and more specifically relates to a nano polymer ring, a nano carbon ring formed based on phase inversion-induced directional self-assembly and a preparation method thereof. Background technique [0002] Porous nanocarbon materials usually have physical and chemical properties such as abundant pores, high specific surface area, high electrical and thermal conductivity, and good structural stability, so they are widely used in catalysis, energy storage, adsorption, separation and other fields. The morphology and structural features of carbon materials can significantly affect their properties. For example, the electrochemical properties of carbon fibers are mainly closely related to their high aspect ratio and small radial size. The relatively rare nano-carbon materials with ring structure have unique physical and chemical properties due to their special mo...

Claims

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Application Information

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IPC IPC(8): C01B32/15C08G14/073B82Y40/00
CPCC01B32/15C08G14/06B82Y40/00
Inventor 李文翠侯璐陆安慧张玉
Owner DALIAN UNIV OF TECH
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