Photothermal Seawater Desalination Membrane with Metal Organic Framework

A metal-organic framework and photothermal technology, applied in the field of solar seawater desalination, can solve environmental pollution and other problems, and achieve the effects of high thermal conductivity, low production cost, and high porosity

Active Publication Date: 2020-06-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, most of the metal-organic framework films are prepared by the secondary growth method containing organic solvents on inorganic planar substrates at relatively high temperatures, which will pollute the environment.

Method used

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  • Photothermal Seawater Desalination Membrane with Metal Organic Framework
  • Photothermal Seawater Desalination Membrane with Metal Organic Framework
  • Photothermal Seawater Desalination Membrane with Metal Organic Framework

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1) 400ml copper hydroxide nanowire solution was mixed with 1.07ml concentration of 0.75mg / L single-walled carbon nanotube aqueous solution and 0.76ml concentration of 0.03wt% sodium polystyrene sulfonate solution, and after magnetic stirring for 10 minutes, Vacuum filtration on the polycarbonate porous membrane, after the polycarbonate porous membrane is peeled off with an ethanol solution, a self-supporting composite membrane of copper hydroxide nanowires / single-walled carbon nanotubes modified by sodium polystyrene sulfonate is obtained, The polycarbonate porous membrane has a diameter of 4.7 cm and a pore size of 1 micron.

[0065] 2) Put the composite film of copper hydroxide nanowires / single-walled carbon nanotubes modified by sodium polystyrene sulfonate into 20ml concentration of 10mM trimesic acid solution (the volume of ethanol and water is 1:1) , reacted at room temperature for 12 hours.

[0066] After the reaction, wash 3 times with the mixed solvent of the ...

Embodiment 2

[0069] 1) 400ml copper hydroxide nanowire solution was mixed with 1.42ml concentration of 0.75mg / L single-walled carbon nanotube aqueous solution and 0.76ml concentration of 0.03wt% sodium polystyrene sulfonate solution, and after magnetic stirring for 10 minutes, Vacuum filtration on the polycarbonate porous membrane, after the polycarbonate porous membrane is peeled off with an ethanol solution, a self-supporting composite membrane of copper hydroxide nanowires / single-walled carbon nanotubes modified by sodium polystyrene sulfonate is obtained, The polycarbonate porous membrane has a diameter of 4.7 cm and a pore size of 1 micron.

[0070] 2) Put the composite film of copper hydroxide nanowires / single-walled carbon nanotubes modified by sodium polystyrene sulfonate into 20ml concentration of 10mM trimesic acid solution (the volume of ethanol and water is 1:1) , reacted at room temperature for 12 hours.

[0071] After the reaction, wash 3 times with the mixed solvent of the ...

Embodiment 3

[0074] 1) 400ml copper hydroxide nanowire solution was mixed with 2.13ml concentration of 0.75mg / L single-walled carbon nanotube aqueous solution and 0.76ml concentration of 0.03wt% sodium polystyrene sulfonate solution, and after magnetic stirring for 10 minutes, Vacuum filtration on the polycarbonate porous membrane, after the polycarbonate porous membrane is peeled off with an ethanol solution, a self-supporting composite membrane of copper hydroxide nanowires / single-walled carbon nanotubes modified by sodium polystyrene sulfonate is obtained, The polycarbonate porous membrane has a diameter of 4.7 cm and a pore size of 1 micron.

[0075] 2) Put the composite film of copper hydroxide nanowires / single-walled carbon nanotubes modified by sodium polystyrene sulfonate into 20ml concentration of 10mM trimesic acid solution (the volume of ethanol and water is 1:1) , reacted at room temperature for 12 hours.

[0076] After the reaction, wash 3 times with the mixed solvent of the ...

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Abstract

The invention relates to the technical field of solar seawater desalination, and discloses a photothermal seawater desalination film made of a metal organic framework material. The photothermal seawater desalination film comprises a buoyancy layer, a salt resisting layer and a photothermal material layer, wherein the salt resisting layer and the photothermal material layer cover one surface of thebuoyancy layer in sequence; the buoyancy layer is provided with holes for water to pass through and provides buoyancy for the salt resisting layer and the photothermal material layer; the salt resisting layer is a single-walled carbon nanotube / metal organic framework film modified with sodium polystyrene sulfonate; the photothermal material layer is a multi-stage pore structure carbon film. The invention further discloses the single-walled carbon nanotube / metal organic framework film modified with sodium polystyrene sulfonate, the multi-stage pore structure carbon film and a preparation method thereof. The photothermal seawater desalination film has the advantages of low production cost, large-scale production, good durability and stability and the like, and has broad application prospects.

Description

technical field [0001] The invention relates to the technical field of solar seawater desalination, in particular to a metal organic framework material photothermal seawater desalination film. Background technique [0002] The scarcity of freshwater resources is one of the most serious problems in the world. Among the various strategies to alleviate the shortage of freshwater, solar desalination of seawater is a sustainable and eco-friendly technology that does not consume traditional energy. In recent years, interfacial solar photovapor conversion has been considered as a promising technology for high-efficiency energy conversion. By rationally designing photothermal materials floating on the water-air interface and accelerating the evaporation rate of water, high-efficiency interfacial solar photovapor can be achieved. transform. [0003] To achieve efficient interfacial light-to-steam conversion, the photothermal materials have the following requirements: 1) efficient an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/82B01D67/00B01D69/02B01D71/02B01D71/06B01D71/66B01D71/76C02F1/14C02F1/44C02F103/08
CPCB01D67/0079B01D69/02B01D71/021B01D71/06B01D71/66B01D71/76B01D71/82B01D2325/22B01D2325/36C02F1/14C02F1/447C02F2103/08Y02A20/124Y02A20/131Y02A20/142Y02A20/212
Inventor 彭新生马旭
Owner ZHEJIANG UNIV
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