A nanofiber loaded metal organic framework air purification material and preparation method thereof

An air purification material, organic framework technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as limiting practical applications, and achieve the effects of large porosity, high specific surface area, and good filtration performance

Active Publication Date: 2021-10-26
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most MOF materials are prepared as powder materials, which limits their practical application. As a branch of MOFs, zeolite imidazole framework materials (ZIFs) not only inherit the structural advantages of MOFs, but also overcome the thermal stability of MOFs materials to a certain extent. and poor chemical stability, and has been extensively studied

Method used

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  • A nanofiber loaded metal organic framework air purification material and preparation method thereof
  • A nanofiber loaded metal organic framework air purification material and preparation method thereof
  • A nanofiber loaded metal organic framework air purification material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The preparation method of the nanofiber-loaded metal-organic framework air purification material of this embodiment is as follows:

[0026] (1) Dissolve cobalt acetate and polystyrene in DMF at a mass ratio of 1:3, and stir at 60°C for 8 hours to obtain 12% PS, 4% Co(AC) 2 spinning solution;

[0027] (2) Transfer the electrospinning solution obtained in step (1) to a syringe for electrospinning. The electrospinning positive voltage is 18KV, the negative voltage is 1KV, the flow rate is 0.08ml / h, and the electrospinning receiving distance is 15cm, the receiving speed is 150mm / min, and non-woven fabric is used as the receiving substrate;

[0028] (3) Soak the nanofiber membrane prepared in step (2) in 2-methylimidazole / ethanol solution, the soaking concentration is 4g-2MI / 100ml absolute ethanol, and the soaking time is 24h, and ZIF-67@PS is obtained -1 material.

[0029] The ZIF-67@PS-1 material prepared in step (3) was cut into 20cm×20cm, and the filtration performanc...

Embodiment 2

[0031] The preparation method of the nanofiber-loaded metal-organic framework air purification material of this embodiment is as follows:

[0032] (1) Dissolve cobalt acetate and polystyrene in DMF at a mass ratio of 1:2, and stir at 60°C for 12 hours to obtain 12% PS, 6% Co(AC) 2 spinning solution;

[0033] (2) Transfer the electrospinning solution obtained in step (1) to a syringe for electrospinning. The electrospinning positive voltage is 20KV, the negative voltage is 1KV, the flow rate is 0.08ml / h, and the electrospinning receiving distance is 16cm, the receiving speed is 140mm / min, using non-woven fabric as the receiving substrate;

[0034] (3) Soak the nanofiber membrane prepared in step (2) in 2-methylimidazole / ethanol solution, the soaking concentration is 3g-2MI / 100ml absolute ethanol, and the soaking time is 24h, and ZIF-67@PS is obtained -2 materials.

[0035] The ZIF-67@PS-2 material prepared in step (3) was cut into 20cm×20cm, and the filtration performance an...

Embodiment 3

[0037] The preparation method of the nanofiber-loaded metal-organic framework air purification material of this embodiment is as follows:

[0038] (1) Dissolve cobalt acetate and polystyrene in DMF at a mass ratio of 2:3, and stir at 60°C for 10 hours to obtain 12% PS, 8% Co(AC) 2 spinning solution;

[0039] (2) Transfer the electrospinning solution obtained in step (1) to a syringe for electrospinning. The electrospinning positive voltage is 22KV, the negative voltage is 1KV, the flow rate is 0.1ml / h, and the electrospinning receiving distance is 18cm, the receiving speed is 150mm / min, and non-woven fabric is used as the receiving substrate;

[0040] (3) Soak the nanofiber membrane prepared in step (2) in 2-methylimidazole / ethanol solution, the soaking concentration is 2g-2MI / 100ml absolute ethanol, and the soaking time is 24h, and ZIF-67@PS is obtained -3 materials.

[0041] The ZIF-67@PS-3 material prepared in step (3) was cut into 20cm×20cm, and the filtration performan...

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Abstract

The invention discloses a nanofiber loaded metal organic framework air purification material and a preparation method thereof. PS / Co(AC) prepared by electrospinning 2 Nanofibrous membrane, by immersion method, the Co 2+ The 2-methylimidazole ligand in the soaking solution is coordinated to make the MOF material grow on the nanofiber in situ. The diameter of the ZIF-67@PS nanofiber is 500-700nm. This kind of material can combine the advantages of both in structure, with high specific surface area and large porosity. This polystyrene nanofiber-loaded metal-organic framework material not only has good filtration performance, but also has gas adsorption performance, which can adsorb volatile organic compounds such as formaldehyde, and is of great significance in the field of air purification.

Description

technical field [0001] The invention belongs to the field of air purification materials, and relates to a nanofiber-loaded metal organic framework air purification material and a preparation method thereof, which are applied to air purification materials. Background technique [0002] In recent years, air pollution caused by volatile organic compounds (VOCs) such as PM2.5 and formaldehyde has caused harm to public health. According to relevant data of the World Health Organization, indoor air pollution causes 4.3 million deaths worldwide every year, and outdoor air pollution causes 3.7 million deaths. At present, the quality of the air environment is generally improving. Although there is still a long way to go, the results are still obvious. However, indoor pollution control, or pollution control in the public environment, still has a long way to go. [0003] Metal-organic frameworks are a class of porous materials that can flexibly adjust the pore size formed by the self...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D46/00B01D46/54B01D53/02
CPCB01D46/0001B01D46/0036B01D46/543B01D53/02B01D2253/204B01D2257/708
Inventor 刘凡陈元昆何建新邵伟力岳万里王利丹廖熙于文元苹平
Owner ZHONGYUAN ENGINEERING COLLEGE
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