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Metal organic framework/polymer nanofiber composite membrane material and preparation method thereof

A metal-organic framework and nanofiber membrane technology, applied in the direction of fiber type, fiber treatment, non-woven fabrics, etc., can solve the problems of powder-like limited practical application and instability of metal-organic framework materials, and achieve poor stability and easy Adjustable effect of operation, mechanical stability and structure

Inactive Publication Date: 2017-08-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a metal organic framework / polymer nanofiber composite membrane material and its preparation method, to solve the problem that the instability of the metal organic framework material and the powder form limit its practical application

Method used

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  • Metal organic framework/polymer nanofiber composite membrane material and preparation method thereof
  • Metal organic framework/polymer nanofiber composite membrane material and preparation method thereof
  • Metal organic framework/polymer nanofiber composite membrane material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034]A metal-organic framework / polymer nanofiber composite membrane material includes a polymer nanofiber membrane, and a metal-organic framework layer grows on the surface of nanofibers in the polymer nanofiber membrane.

[0035] The preparation method of the metal organic framework / polymer nanofiber composite membrane material is:

[0036] (1) Preparation of polymer nanofiber membrane: Dissolve 1.0 g of polyacrylonitrile in 9.0 g of dimethyl sulfoxide in a stirred tank at a room temperature of 25° C., and stir for 16 hours at a speed of 1000 rpm to obtain a polyacrylonitrile with a mass fraction of 10%. Raw material for electrospinning. The obtained electrospinning raw material was added to the electrospinning device, and the electrospinning was carried out under the conditions of the static voltage of 28kV, the flow rate of the syringe pump of 1mL / h, and the distance between the spinneret and the receiving screen of 20cm to obtain polyacrylonitrile nanoparticles. Fiber me...

Embodiment 2

[0044] A metal-organic framework / polymer nanofiber composite membrane material includes a polymer nanofiber membrane, and a metal-organic framework layer grows on the surface of nanofibers in the polymer nanofiber membrane.

[0045] The preparation method of the metal organic framework / polymer nanofiber composite membrane material is:

[0046] (1) Preparation of polymer nanofiber membrane: at room temperature of 25°C, dissolve 1.2g of polyacrylonitrile in 8.8g of N,N-dimethylformamide in a stirred tank, stir at 800rpm for 12h, and obtain a mass fraction of 8% electrospun raw material. The obtained electrospinning raw material was added to an electrospinning device, and electrospinning was carried out under the conditions of a static voltage of 25kV, a flow rate of a syringe pump of 0.8mL / h, and a distance of 20cm between the spinneret and the receiving screen to obtain polyacrylonitrile nanofibrous membrane.

[0047] (2) Hydrolysis: prepare the hydrolyzate that contains the ...

Embodiment 3

[0053] A metal-organic framework / polymer nanofiber composite membrane material includes a polymer nanofiber membrane, and a metal-organic framework layer grows on the surface of nanofibers in the polymer nanofiber membrane.

[0054] The preparation method of the metal organic framework / polymer nanofiber composite membrane material is:

[0055] (1) Preparation of polymer nanofiber membrane: at room temperature of 25°C, dissolve 1.2g of polyacrylonitrile in 8.8g of N,N-dimethylacetamide in a stirred tank, and stir for 20h at a speed of 1200rpm to obtain a mass fraction of 12% electrospun raw material. The obtained electrospinning raw material was added to an electrospinning device, and electrospinning was carried out under the conditions of a static voltage of 30kV, a flow rate of a syringe pump of 1mL / h, and a distance of 20cm between the spinneret and the receiving screen to obtain polyacrylonitrile nanoparticles. Fiber membrane.

[0056] (2) Hydrolysis: prepare the hydrolyz...

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Abstract

The invention provides a metal organic framework / polymer nanofiber composite membrane material and a preparation method thereof. The metal organic framework / polymer nanofiber composite membrane material is characterized by being prepared from a polymer nanofiber membrane; a metal organic framework layer grows on the surfaces of nanofibers in the polymer nanofiber membrane. The preparation method is characterized by comprising the steps of firstly preparing the polymer nanofiber membrane, hydrolyzing the polymer nanofiber membrane, and putting the hydrolyzed polymer nanofiber membrane into a precursor solution of a metal organic framework to enable the metal organic framework to grow on the polymer nanofiber membrane so as to obtain the metal organic framework / polymer nanofiber composite membrane material. The metal organic framework / polymer nanofiber composite membrane material has great application potential in the fields such as gas adsorption and separation, catalysts, sensors and electrode materials.

Description

technical field [0001] The invention relates to a metal organic framework / polymer nanofiber composite membrane material and a preparation method thereof, in particular to a metal organic framework / electrospun polymer nanofiber flexible composite membrane material and a preparation method thereof. Background technique [0002] Metal-organic frameworks (Metal-Organic Frameworks), referred to as MOFs, are crystalline porous materials with a periodic network structure formed by the self-assembly of inorganic metal centers (metal ions / metal clusters) and bridging organic ligands through coordination bonds. In MOFs, the arrangement of organic ligands and metal ions or metal clusters has obvious directionality, which can form different framework pore structures. This special combination makes the metal-organic framework structure have a large number of micropores (less than 2nm). , the specific surface area of ​​some metal-organic framework structures is usually as high as 3000m 2...

Claims

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Application Information

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IPC IPC(8): D06M15/37D04H1/43D04H1/728D06M101/28
CPCD04H1/43D04H1/728D06M15/37D06M2101/28
Inventor 王先锋张宇菲丁彬彭德凯俞建勇
Owner DONGHUA UNIV
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