Ordered mesoporous carbon material with ultra-large aperture and controllable wall thickness and preparation method thereof

A technology of mesoporous materials and mesoporous carbon, applied in the field of advanced nanoporous materials

Inactive Publication Date: 2010-09-08
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the structure-directing agent used, the maximum pore size of the ordered mesoporous material that can be synthesized without using a pore-enlarging agent is 12nm
[0003] Recently, Deng et al. (Y. Deng, T. Yu, Y. Wan, Y. Shi, Y. Meng, D. Gu, L. Zhang, Y. Huang, C. Liu, X. Wu and D. Zhao, J.Am.Chem.Soc.2007, 129, 1690-1697) directly adopts the AB-type block copolymer PEO-b-PS with ultra-large molecular weight hydrophobic segment as the structure directing agent of the mesoporous material, and synthesizes a material with a pore size exceeding 22nm Mesoporous materials, later Deng et al. (Y.Deng, C.Liu, D.Gu, T.Yu, B.Tu and D.Zhao, Mater.Chem., 2008, 18, 91-97) used AB The type block copolymer PEO-b-PMMA is used as the structure directing agent of mesoporous materials to synthesize mesoporous materials with a wall thickness of 11.5-12.4nm. As a template, by simply changing the amount of precursors to synthesize mesoporous carbon materials with large pores and wall thicknesses that can be adjusted in a wide range, there is no literature report

Method used

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  • Ordered mesoporous carbon material with ultra-large aperture and controllable wall thickness and preparation method thereof
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Experimental program
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Effect test

Embodiment 1

[0019] Synthesis of Mesoporous Carbon Materials with Ultra-Large Pore Size:

[0020] 1. Combine A-stage phenolic resin (Resol) and block copolymer surfactant PEO containing polyoxyethylene segment 45 -b-PMMA 30 -b-PS 48 Dissolve in tetrahydrofuran. Wherein, the content of A-stage phenolic resin is 4.5-14 wt%, the block copolymer surfactant containing polyoxyethylene segment is 1 wt%, and the rest is solvent.

[0021] 2. Pour 4.5 g of the mixed solution in the above step into two petri dishes with a diameter of 15 cm, and let the solvent evaporate naturally for 1 day at room temperature to form a mesoscopic structure.

[0022] 3. After the above-mentioned solvents are completely evaporated, the samples obtained from the evaporation are baked in an environment of 100 degrees for 48 hours to cure the phenolic resin to fix the mesoscopic structure.

[0023] 4. Put the cured sample in a tube furnace under the protection of inert gas and burn it at high temperature to remove the...

Embodiment 2

[0025] Synthesis of Mesoporous Polymer Materials with Ultra-Large Pores

[0026] 1. Combine A-stage phenolic resin (Resol) and block copolymer surfactant PEO containing polyoxyethylene segment 45 -b-PMMA 30 -b-PS 48Dissolve in tetrahydrofuran. Wherein, the content of A-stage phenolic resin is 4.5 wt%, the block copolymer surfactant containing polyoxyethylene segment is 1 wt%, and the rest is solvent.

[0027] 2. Pour 4.5 g of the mixed solution in the above step into two petri dishes with a diameter of 15 cm, and let the solvent evaporate naturally for 1 day at room temperature to form a mesoscopic structure.

[0028] 3. After the above-mentioned solvents are completely evaporated, the samples obtained from the evaporation are baked in an environment of 100 degrees for 48 hours to cure the phenolic resin to fix the mesoscopic structure.

[0029] 4. Put the cured sample in a tube furnace under the protection of inert gas to burn at high temperature to remove the surfactant,...

Embodiment 3

[0031] Synthesis of Mesoporous Carbon Materials with Ultra-Large Pore Size

[0032] 1. Combine A-stage phenolic resin (Resol) and block copolymer surfactant PEO containing polyoxyethylene segment 100 -b-PMMA 80 -b-PS 70 Dissolve in tetrahydrofuran. Wherein, the content of A-stage phenolic resin is 4.5-14 wt%, the block copolymer surfactant containing polyoxyethylene segment is 1 wt%, and the rest is solvent.

[0033] 2. Pour 4.5 g of the mixed solution in the above step into two petri dishes with a diameter of 15 cm, and let the solvent evaporate naturally for 1 day at room temperature to form a mesoscopic structure.

[0034] 3. After the above-mentioned solvents are completely evaporated, the samples obtained from the evaporation are baked in an environment of 100 degrees for 48 hours to cure the phenolic resin to fix the mesoscopic structure.

[0035] 4. Put the cured sample in a tube furnace under the protection of inert gas and burn it at high temperature to remove the...

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Abstract

The invention relates to an ordered mesoporous carbon material with ultra-large aperture and controllable wall thickness and a preparation method thereof, belonging to the field of advanced nano porous materials and techniques, wherein the ordered mesoporous carbon material is prepared by using ABC triblock copolymers as mesoporous material template agent. The synthesized mesoporous carbon material has the advantages that the order of mesopores is maintained, the dimension of the mesopores is ultra-large, the specific area is large, the pore volume is large, the aperture can be controlled within 10-100nm, the wall thickness of the material can be controlled through simply changing the quantity of precursors and thereby the effective and convenient method is provided for the synthesis of the ordered mesoporous carbon material with ultra-large aperture and controllable wall thickness. The prospect of application of the material and the synthesis method in various fields is wide.

Description

technical field [0001] The invention belongs to the field of advanced nanoporous materials and technologies, and specifically relates to an ordered mesoporous carbon material with ultra-large pore size and controllable wall thickness synthesized by using an amphiphilic ABC block copolymer with a super-large molecular weight hydrophobic block as a structure-directing agent . Background technique [0002] Mesoporous materials are a cutting-edge subject emerging in the field of materials science in recent years, and have become a research hotspot in today's scientific community. Recent studies have shown that various new mesoporous materials have important applications in chemistry, optoelectronics, electromagnetics, materials science, and environmental science. , Separation science and many other fields have great application potential. In recent years, great progress has been made in the synthesis of ordered mesoporous carbon materials with large pores. A series of ordered ...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B31/08
Inventor 张俊勇邓勇辉魏晶屠波赵东元
Owner FUDAN UNIV
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