Composite aerogel material and preparation method, multiple recycling method, multifunctional composite aerogel material and application thereof

A composite airgel and multi-functional technology, applied in the direction of airgel preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalyst, etc., can solve complex steps and do not involve post-treatment of adsorbent materials Problems, difficult to control and other problems, to achieve the effect of good adsorption performance

Active Publication Date: 2017-08-25
UNIV OF SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this material involves the synthesis of nanocrystals and the subsequent adsorption of nanocrystals into an organic framework. The steps are relatively complicated and dif

Method used

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  • Composite aerogel material and preparation method, multiple recycling method, multifunctional composite aerogel material and application thereof
  • Composite aerogel material and preparation method, multiple recycling method, multifunctional composite aerogel material and application thereof
  • Composite aerogel material and preparation method, multiple recycling method, multifunctional composite aerogel material and application thereof

Examples

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Example Embodiment

[0060] The invention provides a method for preparing a composite aerogel material, including the following steps:

[0061] 1) Mixing the nanowires and the water-soluble polymer aqueous solution to obtain a mixed solution;

[0062] 2) The mixed solution obtained in the above steps is subjected to orientation freezing, and then freeze-dried to obtain a composite aerogel material.

[0063] The selection and ratio of raw materials in the above-mentioned preparation method of the present invention, as well as the corresponding principles of optimization, etc., unless otherwise specified, correspond to the selection and ratio of raw materials in the aforementioned composite aerogel material, and the corresponding principles of optimization. This will not be repeated one by one.

[0064] In the present invention, firstly, the nanowires and the water-soluble high molecular polymer aqueous solution are mixed to obtain a mixed solution.

[0065] The source of the nanowires is not particularly li...

Example Embodiment

[0107] Example 1

[0108] Preparation of Sodium Alginate-Xonotlite Nanowire Composite Aerogel Material:

[0109] Preparation of sodium alginate solution:

[0110] Weigh 5.0g of sodium alginate powder in a 250ml beaker, and measure 245ml of deionized water in the beaker, use mechanical stirring, 300rpm, 12h, and finally obtain a uniform 2% (20mg / ml) sodium alginate solution, and place The refrigerator freezer is ready for use.

[0111] Preparation of Xonotlite Nanowires:

[0112] Weigh 23.615g of calcium nitrate tetrahydrate in a 250ml beaker, measure 200ml of deionized water into the beaker, stir for 20min to obtain a clear solution. Weigh 28.42g of sodium metasilicate nonahydrate in a 500ml beaker, add 200ml of deionized water, and stir for 20 minutes with a magnet to obtain a clear solution. Under vigorous stirring, slowly drop the calcium nitrate tetrahydrate solution into the sodium silicate solution to obtain a white emulsion, continue to vigorously stir for 1 hour, after which ...

Example Embodiment

[0126] Example 2

[0127] Sodium alginate-xonotlite aerogel material adsorption of heavy metal ions:

[0128] Dispose 25mL of a solution of 0.1M trivalent iron ion, copper ion, barium ion, and lead ion concentration in a 50mL beaker. The aerogel material obtained by the freeze-drying method in Example 1 was equally divided into four parts, and put into a beaker filled with four kinds of metal ion solutions, the solution was slowly stirred, and the adsorption time was 1.5h. And take out the sample 0.5ml solution every 5min, 15min, 45min, 90min respectively, carry out the inductively coupled plasma concentration test.

[0129] The adsorption process of the sodium alginate-xonotlite composite aerogel material in Example 2 of the present invention was detected and characterized.

[0130] See Figure 4 , Figure 4 This is the appearance photograph of the aerogel material after the sodium alginate-xonotlite composite aerogel adsorbed four different metal ions in Example 2 of the present in...

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Abstract

The invention provides a composite aerogel material and a preparation method, multifunctional recycling method, multifunctional composite aerogel material and application thereof. By adopting the combination of a water-soluble high-molecular polymer and a nanowire, an organic-inorganic composite aerogel material rich in multi-active sites shows the excellent adsorption performance of heavy metal ions. Complex production equipment is not needed, the method is simple and easy to implement, the time and labor are saved, and industrial large-scale production is easy to achieve. Accordingly, on the overall design ideas, the purpose of aiming at design of a new structure and performance study of materials is achieved, the subsequent processing process and the reuse angle of the material are created, composite aerogel absorbed with the metal ions is converted into a functional material, the new function of the material is further performed, requirements in multiple aspects are met, multistage utilization of the material is embodied in the overall technical scheme, and then the use efficiency and the recycling series are improved.

Description

technical field [0001] The invention relates to the technical field of preparation and application of micro- and nano-scale materials, in particular to a composite airgel material, a preparation method and a multifunctional reuse method thereof, a multifunctional composite airgel material and application. Background technique [0002] Airgel, also known as xerogel, is a solid material form, a highly dispersed solid material that is composed of colloidal particles or polymer molecules aggregated into a nanoporous network structure, and filled with a gaseous dispersion medium in the pores , is also one of the solids with the lowest density in existing materials. There are many types of aerogels, including silicon-based, carbon-based, sulfur-based, metal oxide-based or metal-based, etc. The common aerogel is silicon-based aerogel. As long as the gel of any substance can be dried to remove the internal solvent, and can basically keep its shape unchanged, and the product has hig...

Claims

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Application Information

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IPC IPC(8): B01J13/00B01J20/24B01J20/28B01J20/30C02F1/28B01J31/26
CPCB01J13/0091B01J20/04B01J20/24B01J20/28047B01J31/26B01J35/0013B01J35/0033B01J35/004C02F1/281C02F1/286
Inventor 俞书宏陈思铭高怀岭
Owner UNIV OF SCI & TECH OF CHINA
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