Preparation method of membrane material for solar interface evaporation seawater desalination

A technology of solar energy and membrane materials, applied in the field of solar desalination, can solve the problems of poor mechanical properties and low light-to-heat conversion efficiency, achieve ideal corrosion resistance, improve light-to-heat conversion efficiency, and increase evaporation efficiency

Active Publication Date: 2021-06-25
NANJING FORESTRY UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a membrane material for solar interface evaporation seawater desalination to solve the problems of poor mechanical properties and low photothermal conversion efficiency of the seawater desalination membrane material prepared in the prior art

Method used

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  • Preparation method of membrane material for solar interface evaporation seawater desalination
  • Preparation method of membrane material for solar interface evaporation seawater desalination
  • Preparation method of membrane material for solar interface evaporation seawater desalination

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Embodiment 1

[0027] A method for preparing a film material for desalination of seawater by evaporation of solar energy interface, comprising:

[0028] (1) Ti 3 C 2 T x The preparation method of (MXene) nano sheet comprises:

[0029] At room temperature, in a 100mL polytetrafluoroethylene beaker, dissolve 2g of lithium fluoride in 40mL of hydrochloric acid (the concentration of hydrochloric acid is 9mol / L), stir and mix thoroughly for 40min; then, slowly add 2g of Ti 3 AlC 2 powder, after the feeding is completed, the reaction solution is placed at 35°C and continuously stirred for 24 hours; after the reaction, the reaction solution is centrifuged 8 times at a speed of 7000rpm, and the lower layer of sediment is removed, and washed with distilled water until the pH of the solution is neutral , and then dried in a vacuum oven at 60°C for 24 hours to obtain Ti 3 C 2 T x (MXene) nanosheets;

[0030] (2) The preparation method of PLA-g-HPC comprises:

[0031] Under nitrogen atmosphere,...

Embodiment 2

[0041] A method for preparing a film material for desalination of seawater by evaporation of solar energy interface, comprising:

[0042] At room temperature, in a 100mL polytetrafluoroethylene beaker, dissolve 2g of lithium fluoride in 40mL of hydrochloric acid (the concentration of hydrochloric acid is 9mol / L), stir and mix thoroughly for 60min; then, slowly add 2g of Ti 3 AlC 2 powder, after the addition is complete, place the reaction solution at 35°C and continuously stir for 24 hours; after the reaction, centrifuge the reaction solution at a speed of 8000rpm for 5 times, remove the lower layer of sediment, and wash it with distilled water until the pH of the solution is neutral , and then dried in a vacuum oven at 60°C for 24 hours to obtain Ti 3 C 2 T x (MXene) nanosheets;

[0043] (2) The preparation method of PLA-g-HPC comprises:

[0044] Under nitrogen atmosphere, add 14.5g L-lactide and 0.7g hydroxypropyl cellulose to 100mL toluene respectively, then raise the ...

Embodiment 3

[0048] A method for preparing a film material for desalination of seawater by evaporation of solar energy interface, comprising:

[0049] At room temperature, in a 100mL polytetrafluoroethylene beaker, dissolve 2g of lithium fluoride in 40mL of hydrochloric acid (the concentration of hydrochloric acid is 9mol / L), stir and mix thoroughly for 50min; then, slowly add 2g of Ti 3 AlC 2 powder, after the feeding is completed, the reaction solution is placed at 35°C and continuously stirred for 24 hours; after the reaction, the reaction solution is centrifuged 6 times at a speed of 7500rpm, and the lower layer of precipitate is removed, and washed with distilled water until the pH of the solution is neutral , and then dried in a vacuum oven at 60°C for 24 hours to obtain Ti 3 C 2 T x (MXene) nanosheets;

[0050] (2) The preparation method of PLA-g-HPC comprises:

[0051] Under nitrogen atmosphere, add 14.5g L-lactide and 0.7g hydroxypropyl cellulose to 100mL toluene respectively...

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Abstract

The invention discloses a preparation method of a membrane material for solar interface evaporation seawater desalination. The method comprises the following steps: dissolving PLA particles in a chloroform/N, N-dimethylformamide mixed solvent, then respectively adding PLA-g-HPC and Ti3C2Tx (MXene) nanosheets, stirring, carrying out ultrasonic treatment, and carrying out electrostatic spinning to obtain a PLA/PLA-HPC/MXene membrane. According to the invention, PLA-g-HPC is used as a dispersing agent and functional particles, Ti3C2Tx(MXene) nanosheets are introduced, and MXene is uniformly dispersed in the PLA/PLA-HPC/MXene membrane, so that the PLA/PLA-HPC/MXene membrane has very good photothermal conversion performance and mechanical stability; and the PLA/PLA-HPC/MXene membrane has a three-dimensional hierarchical porous structure, so that the PLA/PLA-HPC/MXene membrane has a relatively large specific surface area, water evaporation is facilitated, and the evaporation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of solar seawater desalination, in particular to a preparation method of a film material used for solar interface evaporation seawater desalination. Background technique [0002] Among all renewable energy sources, solar energy is considered to be the most abundant energy source, and about 3.4*1024J of solar energy reaches the earth's surface every year, which is greater than the sum of all estimated non-renewable energy sources including nuclear fuels and fossil fuels One order of magnitude. While fossil fuels remain the dominant source of energy, fluctuations in global supply and demand for oil and gas often cause conflict. In addition, carbon, nitrogen, and aerosol oxides emitted from fossil fuel combustion contribute to atmospheric pollution and global warming. [0003] With the continuous increase of population, the scarcity of fresh water resources in the world has attracted more and more attention. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F1/08C02F1/14C02F103/08
CPCC02F1/04C02F1/08C02F1/14C02F2103/08Y02A20/212
Inventor 付宇王永勤
Owner NANJING FORESTRY UNIV
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