Chitosan-tungsten disulfide aerogel composite material as well as preparation method and application thereof

A technology of tungsten disulfide and composite materials, applied in chemical instruments and methods, alkali metal compounds, inorganic chemistry, etc., can solve the problems of limited adsorption capacity, limited application, poor mechanical strength, etc., and achieve poor stability and good adsorption effect , the effect of stable performance

Active Publication Date: 2022-03-25
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still has its own defects, such as poor mechanical strength and limited adsorption capacity, which limit its application in adsorption materials.

Method used

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  • Chitosan-tungsten disulfide aerogel composite material as well as preparation method and application thereof
  • Chitosan-tungsten disulfide aerogel composite material as well as preparation method and application thereof
  • Chitosan-tungsten disulfide aerogel composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The chitosan-tungsten disulfide airgel composite material described in present embodiment 1, described acid solution is glacial acetic acid, and the mass concentration of acid solution is 5%, and the solid-to-liquid ratio of chitosan and acid solution is 2 : 100, the unit is g / ml.

[0047] in:

[0048] The degree of deacetylation of chitosan is 80-95%.

[0049] The purity of said tungsten disulfide is 99.9%.

[0050] The preparation method of the chitosan-tungsten disulfide airgel composite material described in the present embodiment 1 is made up of the following steps:

[0051] (1) The amount of glacial acetic acid solution is 5ml, the amount of deionized water is 95ml, and chitosan is weighed 2g. After stirring for 8 hours and dissolving, let it stand for 24 hours to make it fully mixed, and prepare chitosan acid solution; wherein: chitosan and acid The solid-to-liquid ratio of the solution is 2:100, and the unit is g / ml.

[0052] (2) Put 0.5g tungsten disulfide ...

Embodiment 2

[0058]For the chitosan-tungsten disulfide airgel composite material described in Example 2, the acid solution is hydrochloric acid, and the mass concentration of the acid solution is 10%.

[0059] in:

[0060] The degree of deacetylation of chitosan is 80-95%.

[0061] The purity of said tungsten disulfide is 99.9%.

[0062] The preparation method of the chitosan-tungsten disulfide airgel composite material described in present embodiment 2 is made up of the following steps:

[0063] (1) The amount of hydrochloric acid solution is 10ml, the amount of deionized water is 90ml, and chitosan is weighed 1.5g. After stirring for 8h to dissolve completely, let it stand for 24h to prepare chitosan acid solution; wherein: the solid solution of chitosan and acid solution The liquid ratio is 1.5:100, and the unit is g / ml.

[0064] (2) Put 0.5g of tungsten disulfide into the stirred chitosan acid solution, put the mixed solution into an ultrasonic cleaner for ultrasonication for 6 hour...

Embodiment 3

[0070] For the chitosan-tungsten disulfide airgel composite material described in Example 3, the acid solution is formic acid, and the mass concentration of the acid solution is 5%.

[0071] in:

[0072] The degree of deacetylation of chitosan is 80-95%.

[0073] The purity of said tungsten disulfide is 99.9%.

[0074] The preparation method of the chitosan-tungsten disulfide airgel composite material described in the present embodiment 3 is made up of the following steps:

[0075] (1) 5ml of formic acid solution, 95ml of deionized water, 1g of chitosan, stirred for 8h to dissolve, left to stand for 24h to make it fully mixed, and prepared chitosan acid solution; wherein: chitosan and acid solution The solid-to-liquid ratio is 1:100, and the unit is g / ml.

[0076] (2) Put 0.5g of tungsten disulfide into the stirred chitosan acid solution, put the mixed solution into an ultrasonic cleaning machine for ultrasonication for 4 hours, the ultrasonic frequency is 40KHz, and the ul...

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Abstract

The invention belongs to the technical field of aerogel preparation, and particularly relates to a chitosan-tungsten disulfide aerogel composite material as well as a preparation method and application thereof. The chitosan-tungsten disulfide aerogel composite material is prepared from the following raw materials: chitosan, an acid solution, sodium hydroxide and tungsten disulfide. Wherein the acid solution is one of glacial acetic acid, hydrochloric acid, formic acid or malic acid; the mass concentration of the acid solution is 5-10%, the solid-to-liquid ratio of the chitosan to the acid solution is (1-2): 100, and the unit is g/ml. The chitosan-tungsten disulfide aerogel composite material disclosed by the invention has a three-dimensional pore structure, low density, high specific surface area, high porosity and good adsorption capacity, and particularly has a good adsorption effect on lead ions. The chitosan-tungsten disulfide aerogel composite material prepared by the method disclosed by the invention is stable in performance, has a directional porous structure and good adsorption performance, and is suitable for industrial popularization and application.

Description

technical field [0001] The invention belongs to the technical field of airgel preparation, and in particular relates to a chitosan-tungsten disulfide airgel composite material and a preparation method and application thereof. Background technique [0002] With the growth of my country's population and the rapid development of industry and agriculture, the problem of environmental pollution is becoming more and more serious. Among them, the problem of heavy metal pollution in industrial and agricultural wastewater has attracted much attention due to its characteristics of large hazards, wide sources, long residual time, and difficulty in removal. Lead is a toxic heavy metal that is extremely harmful to the human body. After entering the human body, a small part of its compounds will be excreted with the body's metabolism, and most of the rest will accumulate in the body, which will damage the human body's nerves, digestion, blood, cardiovascular and Multiple systems such as u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20
CPCB01J20/24B01J20/0218B01J20/0285B01J20/28047C02F1/288C02F2101/20Y02W10/37
Inventor 蔡红珍韩祥生原研浩杨科研张文彬高锋
Owner SHANDONG UNIV OF TECH
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