Synthetic Method of Confined-Growth Metal-Organic Framework Compound Flexible Film

A technology of metal organic framework and synthesis method, which is applied in the direction of filament/wire forming, conjugated synthetic polymer rayon, conjugated rayon, etc., can solve the difficulty of MOFs size control, application field limitation, poor formability, etc. problem, to achieve the effect of good industrial application prospects, short time consumption, and good performance

Active Publication Date: 2022-04-15
RES INST OF XIAN JIAOTONG UNIV & SUZHOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to control the size of MOFs, and at the same time, the formability is poor, and it is easy to cause loss when used alone, and the application field is limited.

Method used

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  • Synthetic Method of Confined-Growth Metal-Organic Framework Compound Flexible Film
  • Synthetic Method of Confined-Growth Metal-Organic Framework Compound Flexible Film
  • Synthetic Method of Confined-Growth Metal-Organic Framework Compound Flexible Film

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preparation example Construction

[0032] This example discloses a method for synthesizing a flexible film of a metal-organic framework compound grown in confinement, such as figure 1 shown, including the following steps:

[0033] 1) Preparation of electrospinning precursor solution: including outer layer precursor solution and inner layer precursor solution;

[0034] Preparation of the outer layer precursor solution (i.e. the outer layer electrospinning solution): dissolve the insoluble first high molecular polymer in the first solvent, and the mass concentration of the first high molecular polymer is 1% to 30%, Then a spinnable outer layer precursor solution is obtained, and the first high molecular polymer is within the mass concentration range, which can ensure that the electrospinning process can be carried out smoothly; wherein, the first high molecular polymer is polyacrylonitrile, polybias Any one of vinyl fluoride, polystyrene, polymethyl methacrylate, nylon 66, chitosan and cellulose, this series of...

Embodiment 1

[0044] Weigh 0.8g of polyacrylonitrile and dissolve it in 10g of N,N-2 methylamide, stir evenly at room temperature to obtain an outer layer electrospinning solution with a concentration of 8%; weigh 0.75g of polyvinylpyrrolidone, 0.60g of bismuth nitrate 1.2 g of trimesic acid was dissolved in 20 g of methanol, and stirred evenly at room temperature to prepare an inner layer electrospinning solution. Pour the outer layer electrospinning solution into the outer layer electrospinning spinneret, pour the inner layer electrospinning solution into the inner layer electrospinning spinneret, and set the electrospinning parameters as follows: inner layer electrospinning spinneret diameter 0.3mm, shell electrospinning spinneret 0.8mm, inner layer electrospinning rate 0.5mL / h, outer layer electrospinning rate 1mL / h, electrospinning voltage set to 18kV, receiving distance 18cm, by Electrospinning obtains a core-shell precursor fiber (i.e. a coaxial core-shell flexible electrospinning pr...

Embodiment 2

[0047] Weigh 1.50g of nylon 66 and dissolve it in 15g of formic acid solution, stir evenly at room temperature to obtain an outer layer electrospinning solution with a concentration of 10%; weigh 0.75g of polyvinyl alcohol, 0.30g of cobalt nitrate, 2.4g of dimethyl Imidazole was dissolved in 15 g of deionized water, and stirred evenly at room temperature to prepare an inner layer electrospinning solution. Pour the outer layer electrospinning solution into the outer layer electrospinning spinneret, pour the inner layer electrospinning solution into the inner layer electrospinning spinneret, and set the electrospinning parameters as follows: inner layer electrospinning spinneret diameter 0.2mm, shell electrospinning spinneret 0.9mm, inner layer electrospinning rate 1mL / h, outer layer electrospinning rate 1mL / h, electrospinning voltage set to 20kV, receiving distance 15cm, through electrostatic Spin to obtain a coaxial core-shell type flexible electrospinning precursor film with ...

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Abstract

The invention discloses a method for synthesizing a flexible film of a metal-organic framework compound with confined growth, comprising the following steps: 1), preparing an electrospinning precursor solution: including an outer layer precursor solution and an inner layer precursor solution; 2), and Shaft electrospinning: Add the outer layer precursor solution to the outer layer solution channel of the coaxial electrospinning machine; at the same time, add the inner layer precursor solution to the inner layer solution channel of the coaxial electrospinning machine, spray The thread head adopts the coaxial type, and the core-shell precursor fiber is obtained by electrospinning; 3), MOFs confined growth: the core-shell precursor fiber obtained in step 2) is placed in the third solvent for reaction; the inner layer The second high molecular polymer dissolves to release the central atoms and ligands and grows in the inner cavity of the fiber; after the growth of the MOFs is completed, the obtained confined growth MOFs flexible film is cleaned and dried. This method can not only control the growth size of MOFs, but also process them into flexible membrane materials to expand their application fields.

Description

technical field [0001] The invention relates to the technical field of metal organic framework materials, more specifically, it relates to a method for synthesizing flexible membranes of metal organic framework compounds grown in confinement. Background technique [0002] Metal-organic frameworks (MOFs for short) are a class of porous coordination polymer materials formed by self-assembly of organic ligands and central metal atoms. MOFs have a tunable pore structure, surpassing traditional porous materials in terms of specific surface area and pore volume. The variable topological structure enables MOFs to possess unlimited structure-function tunability while maintaining good chemical and physical stability. Based on the above excellent properties, MOFs have good application prospects in the fields of catalysis, hydrogen storage, gas filtration, and drug delivery. [0003] The Chinese patent whose application publication number is CN109021264A discloses a preparation metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D01D5/00D01D5/34D01F8/08D01F8/10D01F1/10D01F8/12D01F8/16D01F8/18C08G83/00
CPCD04H1/728D01D5/0015D01D5/34D01D5/0069D01F8/08D01F8/10D01F1/10D01F8/12D01F8/16D01F8/18C08G83/008
Inventor 杨国锐延卫王筱珺丁书江王玲王思岚
Owner RES INST OF XIAN JIAOTONG UNIV & SUZHOU
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