Preparation method of porous doped flexible activated carbon gas adsorption film

A gas adsorption, activated carbon technology, applied in separation methods, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve the problem of difficult removal of interfering components, achieve good mechanical properties and thermal stability, and stable physical properties. Effects of chemical properties, controllable pore size distribution structure

Active Publication Date: 2021-02-05
济南国科医工科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the activated carbon nanofiber material prepared by this method is used as a respiratory gas adsorption material, it greatly improves the ability to remove interfering components in respiratory gas, and solves the problem of difficult removal of interfering components in the process of respiratory gas detection.

Method used

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  • Preparation method of porous doped flexible activated carbon gas adsorption film
  • Preparation method of porous doped flexible activated carbon gas adsorption film
  • Preparation method of porous doped flexible activated carbon gas adsorption film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First, weigh 1g of polyacrylonitrile (PAN) powder, 0.1g of graphene oxide and stir to dissolve completely in 10ml of N,N-dimethylformamide (DMF) solvent; then put the dissolved PAN / DMF solution into Put it into a disposable syringe, install it on the electrospinning instrument, carry out electrospinning under the conditions of a voltage of 15kV, a receiving distance of 20cm, and a solution advancing speed of 0.005mm / s, and put the obtained fiber film into vacuum drying Drying in the middle: the temperature is 40°C; the drying time is 24h; finally, the dried PAN / GO membrane is pre-oxidized and carbonized and activated. The pre-oxidation conditions: the temperature is 200°C; the time is 2h; the heating rate is 1°C / min; the protective gas is air. Carbonization activation conditions: carbonization activation temperature is 600°C; holding time is 2h; heating rate is 5°C / min; protective gas is high-purity nitrogen. The carbonized and activated PAN / GO membrane was washed and...

Embodiment 2

[0024] First, weigh 0.5g of polyacrylonitrile (PAN) powder, 0.3g of graphene oxide and stir to completely dissolve in 10ml of N,N-dimethylformamide (DMF) solvent; then dissolve the dissolved PAN / DMF solution Put it into a disposable syringe, install it on an electrospinning instrument, perform electrospinning under the conditions of a voltage of 10kV, a receiving distance of 10cm, and a solution advancing speed of 0.001mm / s, and put the obtained fiber film into a vacuum Drying during drying: the temperature is 60°C; the drying time is 6h; finally, the dried PAN / GO membrane is pre-oxidized and carbonized and activated. The pre-oxidation conditions: the temperature is 100°C; the time is 2h; the heating rate is 5 ℃ / min; the protective gas is air. Carbonization activation conditions: carbonization activation temperature is 400°C; holding time is 2h; heating rate is 10°C / min; protective gas is high-purity nitrogen. The carbonized and activated PAN / GO membrane was washed and dried ...

Embodiment 3

[0026] First, weigh 10g of polyacrylonitrile (PAN) powder, 0.5g of graphene oxide and stir to dissolve completely in 100ml of N,N-dimethylformamide (DMF) solvent; then put the dissolved PAN / DMF solution into Put it into a disposable syringe, install it on the electrospinning instrument, carry out electrospinning under the conditions of a voltage of 25kV, a receiving distance of 30cm, and a solution advancing speed of 0.01mm / s, and put the obtained fiber film into vacuum drying Drying in the middle: the temperature is 60°C; the drying time is 36h; finally, the dried PAN / GO membrane is pre-oxidized and carbonized and activated, and the pre-oxidation conditions are: the temperature is 250°C; the time is 1h; the heating rate is 10°C / min; the protective gas is air. Carbonization activation conditions: carbonization activation temperature is 800°C; holding time is 4h; heating rate is 1°C / min; protective gas is high-purity nitrogen. The carbonized and activated PAN / GO membrane was ...

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Abstract

The invention discloses a preparation method of a porous doped flexible activated carbon gas adsorption film. The preparation method comprises the following specific process steps: completely dissolving polyacrylonitrile (PAN) powder and graphene oxide with different masses in a certain volume of N, N-dimethylformamide (DMF) solvent, then carrying out electrostatic spinning under different conditions, then carrying out pre-oxidation and carbonization activation treatment on a PAN / GO fiber membrane obtained by electrostatic spinning under different conditions, so as to obtain the PAN / GO / PAN / GOcomposite fiber membrane, and preparing the porous doped flexible activated carbon gas adsorption film. When the graded doped flexible activated carbon gas adsorption film is used for gas adsorption,excellent gas adsorption performance is shown. The preparation method has the advantages of novelty, simplicity in operation, low preparation cost, high product purity and the like.

Description

technical field [0001] The invention relates to a preparation method of a gas adsorption material, in particular to a preparation method of a porous doped flexible porous activated carbon gas adsorption material; it belongs to the field of flexible nanometer materials. Background technique [0002] Adsorption is a common purification method for gaseous pollutants. It uses a porous solid adsorbent to gather or condense one or several components in a gas or liquid mixture on its surface to achieve the purpose of separation. The common adsorbent material is porous activated carbon. . As a typical adsorption material, activated carbon has the characteristics of high specific surface area, stable physical and chemical stability, good environmental compatibility and abundant raw material sources. At the same time, compared with MOF materials, activated carbon has a good pore size distribution. Therefore, it is considered as one of the very promising gas adsorption materials. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01J20/20B01J20/28033B01J20/28054B01D53/02
Inventor 孙靖赵儒仕孟祥奎王浩源姜琛昱
Owner 济南国科医工科技发展有限公司
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