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Method for preparing macroporous aerogel by using high-internal-phase Pickering emulsion as template and application of macroporous aerogel

A technology with high internal phase and airgel, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve problems such as poor adsorption effect and low dye removal rate, and achieve enhanced stability Effect

Active Publication Date: 2021-11-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the environment of industrial development, the composition and quantity of sewage continue to rise, and the current adsorbents have the problems of low dye removal rate and poor adsorption effect.

Method used

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  • Method for preparing macroporous aerogel by using high-internal-phase Pickering emulsion as template and application of macroporous aerogel
  • Method for preparing macroporous aerogel by using high-internal-phase Pickering emulsion as template and application of macroporous aerogel
  • Method for preparing macroporous aerogel by using high-internal-phase Pickering emulsion as template and application of macroporous aerogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A kind of high internal phase Pickering emulsion, its preparation method specifically comprises:

[0058] A typical sample preparation procedure is as follows. Dissolve 1g glacial acetic acid in 100g water, obtain mass fraction and be 1% acetic acid aqueous solution, dissolve 1g chitosan in the 1% acetic acid aqueous solution of 50g, can obtain chitosan mass fraction be 2%, glacial acetic acid mass fraction is 1% aqueous solution. Dissolve 5g of OSA starch in 50g of water to obtain a 10% OSA starch dispersion. Get 3g mass fraction and be 10% OSA starch dispersion liquid, 4.5g chitosan mass fraction is 2%, the aqueous solution that glacial acetic acid mass fraction is 1%, 2.5g deionized water mix uniformly, can obtain OSA starch mass fraction 3%, chitosan mass fraction of 0.9% mixed dispersion. Put 1ml of the above-mentioned OSA starch mass fraction of 3%, chitosan mass fraction of 0.9% mixed dispersion, 3ml of n-hexane in a 10ml centrifuge tube, and shake it by hand ...

Embodiment 2

[0067] Taking the high internal phase Pickering emulsion described in Example 1 as the macroporous aerogel prepared as a template, the specific preparation method is as follows (the preparation process is as follows: figure 1 shown):

[0068] Prepare the N,N-methylenebisacrylamide dispersion in advance, take 0.4g N,N-methylenebisacrylamide and dissolve it in 10g water, heat it with ultrasonic to disperse evenly, and you can get the mass fraction of 4%N,N- Methylenebisacrylamide solution. Take 1f of the emulsion prepared above (the oil-water ratio is 3:1, the mass fraction of chitosan is 0.9%, the concentration of OSA starch is 3%), add 0.1g of acrylic acid, and 125 μL of 4% N,N-methylene Bisacrylamide solution, 50 μL diethoxyacetophenone, and 25 μL tetramethylethylenediamine were mixed by hand to obtain a precursor solution. Take a 10ml small beaker, inject the precursor solution into it, put the beaker in an ice-water bath, and cover the surface with plastic wrap to prevent...

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Abstract

The invention belongs to the technical field of aerogel adsorption material preparation, and relates to a method for preparing macroporous aerogel by taking a high internal phase Pickering emulsion as a template and application of the macroporous aerogel. A stabilizer of the high internal phase Pickering emulsion is a polysaccharide compound formed by mixing chitosan and 2-octenyl succinic anhydride modified starch, an external phase is water, and an internal phase is n-hexane. The Pickering emulsion disclosed by the invention has relatively high stability. Then, by taking the high-internal-phase Pickering emulsion as a template, a monomer acrylic acid is added into the external phase, ultraviolet-initiated external phase polymerization is conducted, the internal phase is removed, and freeze-drying is conducted to obtain the aerogel adsorption material. The aerogel adsorption material has relatively high mechanical strength and a better dye adsorption effect.

Description

technical field [0001] The invention belongs to the technical field of preparation of airgel adsorption materials, and relates to a method and application for preparing macroporous airgel by using high internal phase Pickering emulsion as a template. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Wastewater contains a large amount of organic matter, and these pollutants make the wastewater in different industries present different acidity and alkalinity. People's pursuit of color and industrial requirements for the stability of dyes have made the ability of new dyes to resist degradation stronger and stronger, and the ability of anti-oxidation and anti-photolysis has bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J20/26B01J20/28047C02F1/285C02F2101/308C02F2101/36C02F2101/38C02F2101/40C02F2101/34
Inventor 郝京诚徐悦
Owner SHANDONG UNIV
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