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Bamboo charcoal/carbon aerogel composite material and preparation method thereof

A technology of carbon airgel and composite materials, applied in chemical instruments and methods, colloid chemistry, colloid chemistry, etc., can solve the problem of low specific surface area of ​​bamboo charcoal, and achieve the effect of increasing the specific surface area

Inactive Publication Date: 2012-05-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a bamboo charcoal / carbon airgel composite material and its preparation method, which overcomes the relatively low specific surface area of ​​existing bamboo charcoal, thereby preparing a bamboo charcoal composite material with a high specific surface area. Material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1, a kind of preparation method of bamboo charcoal / charcoal airgel composite material, comprises the following steps successively:

[0024] 1), mixing resorcinol, formaldehyde and water according to the molar ratio of 1:3:5 and stirring to obtain the mixed solution A;

[0025] 2), put the bamboo charcoal into the sodium carbonate solution whose molar concentration is 6mol / L, soak for 1d; the particle size of the bamboo charcoal is 10-20 mesh, and the bamboo charcoal is 40% of the total weight of the mixed solution A;

[0026] 3), adding the bamboo charcoal obtained by soaking in step 2) to the mixed solution A obtained in step 1), and sealing; first standing at room temperature for 3 days, then standing at 70°C for 3 days, and filtering to obtain mixture B;

[0027] 4) Put the mixture B into a trifluoroacetic acid solution with a mass concentration of 0.5% and soak it at room temperature for 1 day, then put it into acetone and soak it for 3 days after taking ...

Embodiment 2

[0032] Embodiment 2, a kind of preparation method of bamboo charcoal / charcoal airgel composite material, comprises the following steps successively:

[0033] 1), mixing resorcinol, formaldehyde and water according to the molar ratio of 1:3:5 and stirring to obtain the mixed solution A;

[0034] 2), put the bamboo charcoal into the sodium carbonate solution whose molar concentration is 7mol / L, soak for 3d;

[0035] 3), adding the bamboo charcoal obtained by soaking in step 2) into the mixed solution A obtained in step 1), and sealing it; first let stand at room temperature for 5 days, then stand at 80°C for 5 days, and filter to obtain mixture B;

[0036] 4) Put the mixture B into a trifluoroacetic acid solution with a mass concentration of 0.5% and soak it at room temperature for 2 days, then put it into acetone and soak it for 5 days after taking it out, during the process of soaking in acetone, replace the acetone once a day;

[0037] Finally, it was dried naturally at room...

Embodiment 3

[0041] Embodiment 3, a kind of preparation method of bamboo charcoal / charcoal airgel composite material, comprises the following steps successively:

[0042] 1), mixing resorcinol, formaldehyde and water according to the molar ratio of 1:3:5 and stirring to obtain the mixed solution A;

[0043] 2), put the bamboo charcoal into the sodium carbonate solution whose molar concentration is 6mol / L, soak for 2d;

[0044] 3), adding the bamboo charcoal obtained by soaking in step 2) into the mixed solution A obtained in step 1), and sealing it; first let stand at room temperature for 4 days, then stand at 70°C for 4 days, and filter to obtain mixture B;

[0045] 4) Put the mixture B into a trifluoroacetic acid solution with a mass concentration of 0.6% and soak it at room temperature for 2 days, then put it into acetone and soak it for 4 days after taking it out, during the process of soaking in acetone, replace the acetone once a day;

[0046] Finally, it was dried naturally at room...

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Abstract

The invention discloses a method for preparing bamboo charcoal / carbon aerogel composite material, comprising the following steps: 1) mixing m-dihydroxybenzene with formaldehyde, dissolving in water, and stirring to obtain mixed liquid A; 2) adding the bamboo charcoal to the mixed liquid A and sealing; firstly standing at room temperature, then standing at 70-80 DEG C, and filtering to obtain mixture B; 3) putting the mixture B in trifluoroacetic acid liquor of which the mass concentration is 0.4-0.6% to soak, then taking outside and putting in acetone to soak, wherein the acetone is changed every day; and 4) putting the mixture after being dried in a nitrogen atmosphere furnace, insulating at 800-1000 DEG C for 1-3 hours, and obtaining the bamboo charcoal / carbon aerogel composite material. The composite material can be widely applied to industries for purifying air, processing waste water, processing toxic waste water, chemical catalyst carrier, purifying tail gas of cars, preparing sugar and wine, and preparing food.

Description

technical field [0001] The invention relates to a high specific surface area material and a preparation method thereof, in particular to a preparation method of a bamboo charcoal / carbon airgel composite material. Background technique [0002] Since the state banned felling of trees, the environment-friendly and resource-saving bamboo industry has been greatly developed. The related bamboo charcoal has been favored by many researchers because of its renewable resources, excellent adsorption performance, release of negative oxygen ions, far-infrared radiation, electromagnetic shielding and other functions. [0003] The research on bamboo charcoal as an adsorption material mainly focuses on two points: on the one hand, to increase its specific surface area, such as alkali activation, water vapor activation, etc.; 2 and ZnO. [0004] Carbon airgel is an amorphous, solid, lightweight, porous, new nano-carbon material with a porosity as high as 80-99%, a network colloid particle...

Claims

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Application Information

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IPC IPC(8): B01J13/00
Inventor 郭兴忠李文彦孙赛杨辉樊先平涂志龙
Owner ZHEJIANG UNIV
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