Sodium Polystyrene Sulfonate Modified Metal Organic Framework Thin Films and Their Applications

A technology of sodium polystyrene sulfonate and metal organic framework, applied in membrane, membrane technology, semi-permeable membrane separation and other directions, can solve the problems of limited development and application, cumbersome operation, pollution, etc. Simple operation and low energy consumption

Inactive Publication Date: 2019-01-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is often a complex organic synthesis reaction, with cumbersome operations, high energy consumption, and pollution, which limit its development and application.

Method used

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  • Sodium Polystyrene Sulfonate Modified Metal Organic Framework Thin Films and Their Applications
  • Sodium Polystyrene Sulfonate Modified Metal Organic Framework Thin Films and Their Applications
  • Sodium Polystyrene Sulfonate Modified Metal Organic Framework Thin Films and Their Applications

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preparation example Construction

[0031] The preparation method of copper hydroxide nanowire solution among the present invention is:

[0032] Add the ethanolamine aqueous solution into the copper nitrate aqueous solution, stir, and seal the reaction vessel, and obtain a copper hydroxide nanowire solution after 12 to 48 hours. The concentration of the ethanolamine aqueous solution is 1.4mM; the concentration of the copper nitrate aqueous solution is 4mM.

[0033] The preparation method of zinc hydroxide nanowire solution among the present invention is:

[0034] Add ethanolamine to the mixed solution of ethanol and water to obtain ethanolamine solution; add zinc nitrate to the mixed solution of ethanol and water to obtain zinc nitrate solution; then mix the ethanolamine solution and zinc nitrate solution, stir, and seal the reaction vessel, After 0.5-1.5 hours, a zinc hydroxide nanowire solution is obtained. The concentration of the ethanolamine solution is 1.6mM; the concentration of the zinc nitrate solutio...

Embodiment 1

[0036] 1) Mix 30ml copper hydroxide nanowire solution with 1ml 0.0003wt% sodium polystyrene sulfonate solution, stir magnetically for 5min, and vacuum filter directly on the polyethersulfone porous membrane to form a layer of nanowire and polystyrene sulfonate The composite membrane of sodium bicarbonate, the polyethersulfone porous membrane has a diameter of 2.5cm, a pore diameter of 200nm, and a porosity of 25% to 50%. ;

[0037] 2) Put the nanowire sodium polystyrene sulfonate film into 10ml, 10mM trimesic acid solution (the volume of ethanol and water is 1:1), and react at room temperature for 2 hours. After the reaction, wash 3 times with the mixed solvent of the same proportion to obtain the HKUST-1 film modified by sodium polystyrene sulfonate, see figure 2 . figure 2 The HKUST-1 film modified with sodium polystyrene sulfonate shown is a polycrystalline film with good grain intergrowth and continuous film without cracks.

Embodiment 2

[0039]1) Mix 30ml copper hydroxide nanowire solution with 1ml 0.003wt% sodium polystyrene sulfonate solution, stir magnetically for 5 minutes, and vacuum filter directly on the polyethersulfone porous membrane to form a layer of nanowire and polystyrene sulfone The composite membrane of sodium bicarbonate, the polyethersulfone porous membrane has a diameter of 2.5cm, a pore diameter of 200nm, and a porosity of 25% to 50%. ;

[0040] 2) Put the nanowire sodium polystyrene sulfonate film into 10ml, 10mM trimesic acid solution (the volume of ethanol and water is 1:1), and react at room temperature for 2 hours. After the reaction, wash 3 times with the mixed solvent of the same proportion to obtain the HKUST-1 film modified by sodium polystyrene sulfonate, see image 3 . image 3 The HKUST-1 film modified with sodium polystyrene sulfonate shown is a polycrystalline film with good grain intergrowth and continuous film without cracks.

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Abstract

The invention discloses a sodium polystyrene sulfonate modified metal organic framework film and an application thereof. A production method of the sodium polystyrene sulfonate modified metal organic framework film comprises the following steps: 1, preparing a hydroxide nano-wire solution, mixing the prepared hydroxide nano-wire solution with a sodium polystyrene sulfonate solution, uniformly stirring, and carrying out vacuum pumping filtration to obtain a hydroxide nano-wire and sodium polystyrene sulfonate composite film; and 2, dissolving an organic ligand in an ethanol and water mixed solution to obtain an organic ligand solution, placing the hydroxide nano-wire and sodium polystyrene sulfonate composite film in the organic ligand solution, and carrying out a room temperature reaction for 2-4h to obtain the sodium polystyrene sulfonate modified metal organic framework film. Sodium polystyrene sulfonate and nano-wires are mixed through physical stirring and electrostatic adsorption, and sodium polystyrene sulfonate is introduced into the metal organic framework film in situ in order to carry out modification, so the method has the advantages of avoiding of the organic modification process of the metal organic framework ligand, low energy consumption, no pollution, fastness and high efficiency.

Description

technical field [0001] The invention relates to a preparation method of a metal organic framework film, in particular to a polystyrene sodium sulfonate modified metal organic framework film and an application thereof. Background technique [0002] Metal-organic framework film is a porous functional film with a thickness ranging from nanometer to micron and attached to the substrate. Ideally, the metal-organic framework film has a smooth surface, isotropic, high porosity and good chemical stability. It can be used in many fields such as separation, adsorption, catalysis, drug sustained release carrier, hydrogen storage, etc. [0003] Dense continuous metal-organic framework films can be used in the field of ion separation. If the modification of the inner wall of the micropore of the metal organic framework film can change the affinity of the inner wall to ions, by introducing different functional groups to modify the inner wall of the micropore, it is likely to have differe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/66B01D69/12B01D67/00
CPCB01D67/0002B01D69/12B01D71/66B01D2325/26
Inventor 彭新生郭弈毛祎胤
Owner ZHEJIANG UNIV
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