Chitosan-manganese dioxide composite adsorption material and preparation method thereof

A composite adsorption material and manganese dioxide technology, applied in the field of chitosan-manganese dioxide composite adsorption material and its preparation, can solve the problems of high use cost, decreased adsorption capacity, poor selectivity, etc., and achieve long service life and reduce Energy consumption and production costs, good air permeability

Inactive Publication Date: 2020-02-14
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, with the rapid economic development, the problem of formaldehyde pollution caused by building decoration materials and indoor furniture materials is becoming more and more serious. At present, the removal of formaldehyde in the air at home and abroad is combined with photocatalysis and adsorption. The adsorption materials have the following problems: selection poor performance, easy to saturate adsorption; poor recycling performance, high cost of use
Most of the chitosan adsorption materials currently on the market are in granular form, but it is difficult to recycle and regenerate loose chitosan particles or powders after adsorption saturation, and mechanical extrusion during the molding process will lead to structural damage and increase the bulk density. Decreased adsorption
At present, there are few patented technologies on chitosan composite fibers with air purification function. Therefore, it is necessary to develop a new technology for preparing chitosan composite adsorption materials to meet the needs of fiber manufacturing technology and human settlements.

Method used

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  • Chitosan-manganese dioxide composite adsorption material and preparation method thereof
  • Chitosan-manganese dioxide composite adsorption material and preparation method thereof
  • Chitosan-manganese dioxide composite adsorption material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0027] A kind of preparation method embodiment 1 of chitosan-manganese dioxide composite adsorption material, comprises the steps:

[0028] Step 1, prepare redox reaction base liquid: take potassium permanganate powder and fully dissolve it in distilled water, then add oleic acid to the solution, and stir to form an O / W emulsion.

[0029] Wherein, the ratio of raw materials for preparing the redox reaction base liquid is as follows in parts by weight: 500 parts of distilled water, 0.5 parts of potassium permanganate, and 4.45 parts of oleic acid.

[0030] It is equivalent to dissolving 0.5g of potassium permanganate powder in 500ml of distilled water, then dripping about 5ml of oleic acid, and stirring thoroughly to form a redox reaction base liquid.

[0031] The specific method for preparing the redox reaction base liquid can be as follows: at room temperature, take potassium permanganate powder and disperse it in distilled water, and use a magnetic stirrer to stir at a stirr...

Embodiment 2

[0038] A kind of preparation method embodiment 2 of chitosan-manganese dioxide composite adsorption material, comprises the steps:

[0039] Step 1, prepare redox reaction base liquid: take potassium permanganate powder and fully dissolve it in distilled water, then add oleic acid to the solution, and stir to form an O / W emulsion.

[0040] Wherein, the ratio of raw materials for preparing the redox reaction base liquid is as follows in parts by weight: 500 parts of distilled water, 0.75 parts of potassium permanganate, and 6.675 parts of oleic acid.

[0041] It is equivalent to dissolving 0.75g of potassium permanganate powder in 500ml of distilled water, then dripping about 7.5ml of oleic acid, and stirring thoroughly to form a redox reaction base liquid.

[0042] The specific method for preparing the redox reaction base liquid can be as follows: at room temperature, take potassium permanganate powder and disperse it in distilled water, and use a magnetic stirrer to stir at a ...

Embodiment 3

[0049] A kind of preparation method embodiment 3 of chitosan-manganese dioxide composite adsorption material, comprises the steps:

[0050] Step 1, prepare redox reaction base liquid: take potassium permanganate powder and fully dissolve it in distilled water, then add oleic acid to the solution, and stir to form an O / W emulsion.

[0051] Wherein, the ratio of raw materials for preparing the redox reaction base liquid is as follows in parts by weight: 500 parts of distilled water, 1 part of potassium permanganate, and 8.9 parts of oleic acid.

[0052] It is equivalent to dissolving 1g of potassium permanganate powder in 500ml of distilled water, then drop in 10ml of oleic acid, and stir well to form the redox reaction base liquid.

[0053] The specific method for preparing the redox reaction base liquid can be as follows: at room temperature, take potassium permanganate powder and disperse it in distilled water, and use a magnetic stirrer to stir at a stirring speed of 800 rpm...

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Abstract

The invention discloses a preparation method of a chitosan-manganese dioxide composite adsorption material. The method comprises: 1) a step of preparing a redox reaction base solution: fully dissolving potassium permanganate powder in distilled water, adding oleic acid into the solution, and stirring to form an O/W emulsion; 2) a step of soaking: soaking chitosan degradation fibers as a base material in the redox reaction base solution, and standing for 24 hours at room temperature; 3) a step of cleaning: washing the soaked chitosan degradation fibers with absolute ethyl alcohol to remove unreacted oleic acid, and then washing the fibers with distilled water to remove residual ethyl alcohol; and 4) a step of drying the cleaned chitosan degradation fibers at 70 DEG C for 6 hours. The invention also discloses the chitosan-manganese dioxide composite adsorption material. According to the preparation method and the chitosan-manganese dioxide composite adsorption material, preparation of the chitosan composite material at room temperature is achieved so that a chitosan purification base material can be effectively compounded with other materials without the need of a binder.

Description

technical field [0001] The invention belongs to the technical field of material preparation and application, and relates to a chitosan composite material and a preparation method thereof, in particular to a chitosan-manganese dioxide composite adsorption material and a preparation method thereof. Background technique [0002] At present, with the rapid economic development, the problem of formaldehyde pollution caused by building decoration materials and indoor furniture materials is becoming more and more serious. At present, the removal of formaldehyde in the air at home and abroad is combined with photocatalysis and adsorption. The adsorption materials have the following problems: selection Poor performance, easy to saturate adsorption; poor recycling performance, high cost of use. As a degradable organic polymer material, chitosan has high antibacterial properties, biofunctionality and compatibility. It is an environmentally friendly bio-based material. Its surface conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B01D53/02
CPCB01D53/02B01D2257/70B01D2259/4508B01J20/06B01J20/24
Inventor 邢金城灵灵凌继红
Owner TIANJIN UNIV
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