Photocatalytic aerogel contained bamboo charcoal-based adsorption and decomposition agent as well as its preparation method

A technology of catalytic gas and decomposer, applied in separation methods, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve the problems of high cost, undisclosed specific process and complex process of composite aerogel and activated carbon fiber, etc. , to achieve the effect of good adsorption and decomposition effect

Inactive Publication Date: 2013-06-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage lies in the preparation of TiO 2 In the airgel process, supercritical drying with high cost and complicated process is adopted, and the extremely important method of how to combine TiO 2 The specific process of airgel and activated carbon fiber composite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, a kind of its preparation method of the bamboo charcoal-based adsorption decomposition agent that contains photocatalytic airgel;

[0031] According to the molar ratio of raw materials, the ratio of butyl titanate:chelating agent:drying control chemical additive is 1:3.5:3.5. The chelating agent is acetylacetone, the drying control chemical additive is formamide, the surface modifier is an ethanol solution of ethyl tetrasilicate (concentration is 1mol / L), and the low surface tension solvent is absolute ethanol. The consumption of the bamboo charcoal particles is 30% of the weight sum of the butyl titanate, the chelating agent and the drying control chemical additive.

[0032] Follow the steps in turn:

[0033] 1) Dissolve butyl titanate in ethanol as a solvent at a temperature of 25°C; then add bamboo charcoal particles, sonicate at a frequency of 60KHz for 10 minutes, and let stand for 10 hours to obtain a mixed solution A; butyl titanate and ethanol Th...

Embodiment 2

[0040] Embodiment 2, a kind of its preparation method of bamboo charcoal-based adsorption decomposition agent containing photocatalytic airgel;

[0041] According to the molar ratio of raw materials, the ratio of butyl titanate:chelating agent:drying control chemical additive is 1:2.5:2.5. The chelating agent is acetic acid, the drying control chemical additive is dimethylformamide, the surface modifier is an ethanol solution of methyltrichlorosilane (concentration is 1.5mol / L), and the last replacement low surface tension solvent is isopropanol. The consumption of the bamboo charcoal particles is 30% of the weight sum of the butyl titanate, the chelating agent and the drying control chemical additive.

[0042] Follow the steps in turn:

[0043] 1) Dissolve butyl titanate in ethanol as a solvent at a temperature of 30°C; then add bamboo charcoal particles, sonicate at a frequency of 60KHz for 10 minutes, and let it stand for 7 hours to obtain a mixed solution A; butyl titanat...

Embodiment 3

[0050] Embodiment 3, a kind of its preparation method of bamboo charcoal-based adsorption decomposition agent containing photocatalytic airgel;

[0051] According to the molar ratio of raw materials, the ratio of butyl titanate:chelating agent:drying control chemical additive is 1:0.5:0.5. The chelating agent is citric acid, the drying control chemical additive is dimethylformamide, the surface modifier is trimethylchlorosilane ethanol solution (concentration is 1.8mol / L), and the low surface tension solvent replaced is n-hexane. The consumption of bamboo charcoal particle is 30% of the sum of butyl titanate, chelating agent and drying control chemical additive weight

[0052] Follow the steps in turn:

[0053] 1) Dissolve butyl titanate in ethanol as a solvent at a temperature of 50°C; then add bamboo charcoal particles, sonicate at a frequency of 60KHz for 10 minutes, and let it stand for 5 hours to obtain a mixed solution A; butyl titanate and ethanol The molar ratio is 1...

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Abstract

The invention discloses a preparation method of a photocatalytic aerogel contained bamboo charcoal-based adsorption and decomposition agent. The method comprises the steps of: 1) dissolving tetrabutyl orthotitanate in ethanol, then adding bamboo charcoal particles, and conducting ultrasonic treatment and standing, thus obtaining a mixed solution A; 2) dissolving a chelating agent into an alcohol-water solution so as to obtain a mixed solution B; 3) adding the mixed solution B into the mixed solution A, then adding a drying control chemical additive and conducting stirring, thus obtaining a mixture C; 4) subjecting the mixture C to water bath, aging, absolute ethyl alcohol washing, immersion in a surface modifier solution and immersion in a low surface tension solvent in order; 5) carryingout heat preservation to the substance obtained in step 4) at a temperature of 65-80DEG C for 8-14h first, then performing heat treatment in a nitrogen atmosphere furnace at a temperature of 350-500DEG C for 4-6h, and conducting furnace cooling, thus obtaining the bamboo charcoal-based adsorption and decomposition agent. With good adsorption and decomposition effects, the bamboo charcoal-based adsorption and decomposition agent is hopeful to be used for indoor pollution control, sewage treatment, and other aspects.

Description

technical field [0001] The invention relates to a bamboo charcoal-based adsorption and decomposition agent containing photocatalytic airgel and a preparation method thereof, in particular to a material for adsorption and decomposition of VOCs in a chamber and a production method thereof. Background technique [0002] Bamboo charcoal is made by high-temperature anaerobic firing and has a rich microporous structure. Since it was discovered, it has been widely used in household humidity control, indoor purification, sewage treatment, etc. because of its functions of adsorption, humidity control, far-infrared radiation, and negative ion release. How to improve the adsorption of bamboo charcoal has always been a hot spot of research. [0003] TiO 2 Airgel is a porous solid material formed by the aggregation of nanoparticles or polymer molecules. The size of its internal pores and basic constituent particles are all on the nanometer scale, and the specific surface area is betwee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/86B01D53/72B01D53/58B01D53/02B01J21/06B01J35/10
Inventor 郭兴忠李文彦孙赛杨辉樊先平涂志龙
Owner ZHEJIANG UNIV
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