Preparation method of zinc oxide nanowire modified nanofiber filtering membrane

A zinc oxide nanowire and nanofiber membrane technology, applied in the field of textile materials, can solve problems such as less industrial antibacterial use, and achieve the effects of low cost, high porosity, and high specific surface area

Active Publication Date: 2022-02-22
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Silver and copper are proven metals that are generally resistant to Gram-positive and negative bacteria. They have been studied in the medical field, but they are rarely used in industrial antibacterial applications.

Method used

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  • Preparation method of zinc oxide nanowire modified nanofiber filtering membrane
  • Preparation method of zinc oxide nanowire modified nanofiber filtering membrane
  • Preparation method of zinc oxide nanowire modified nanofiber filtering membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A method for preparing a nanofiber filter membrane modified by zinc oxide nanowires, comprising the steps of:

[0055] (1) Dissolve 0.30g of zinc acetate dihydrate completely in a mixed solvent of 15mL N,N-dimethylformamide and 5mL of acetone, and then add 3.40g of it with a molecular weight of about 3.0×10 5 The polyvinylidene fluoride was fully stirred for 16 hours, then heated and stirred in a water bath at 50°C for 8 hours to obtain a spinning solution.

[0056] (2) Utilize solution jet spinning technology to spin the spinning solution in step (1) into nanofiber film, adopt stainless steel net to receive fiber film; Wherein, the preparation process of described solution jet spinning technology is as follows figure 1 , followed by the preparation of spinning solution, solution jet spinning, high temperature treatment and forming of zinc oxide nanowires; spinning parameters: spinning solution advancing rate of 2.0mL / h, spinning air pressure of 0.20MPa, receiving dista...

Embodiment 2

[0065] A preparation method of a nanofiber filter membrane modified by zinc oxide nanowires, comprising the steps of:

[0066] (1) Dissolve 0.30g of zinc acetate dihydrate completely in a mixed solvent of 15mL N,N-dimethylformamide and 5mL of acetone, and then add 3.40g of it with a molecular weight of about 3.0×10 5 The polyvinylidene fluoride powder was fully stirred for 16 hours, then heated and stirred in a water bath at 50°C for 8 hours to obtain a spinning solution.

[0067] (2) Spinning the spinning solution in step (1) into a nanofiber membrane by using a solution jet spinning technology, and adopting a stainless steel mesh to receive the fiber membrane. Spinning parameters: the propulsion rate of the spinning solution is 2.5mL / h, the spinning air pressure is 0.25MPa, and the receiving distance is 60cm.

[0068] (3) Place the nanofiber membrane in step (2) in a blast oven and heat at 150° C. for 12 hours to obtain a polyvinylidene fluoride nanofiber membrane loaded wi...

Embodiment 3

[0071] A preparation method of a nanofiber filter membrane modified by zinc oxide nanowires, comprising the steps of:

[0072] (1) Completely dissolve 0.30g of zinc acetate dihydrate and 0.01g of copper nitrate in a mixed solvent of 15mL N,N-dimethylformamide and 5mL of acetone, and then add 3.40g of it with a molecular weight of about 3.0×10 5 The polyvinylidene fluoride powder was fully stirred for 16 hours, then heated and stirred in a water bath at 50°C for 8 hours to obtain a spinning solution.

[0073] (2) Spinning the spinning solution in step (1) into a nanofiber membrane by using a solution jet spinning technology, and adopting a stainless steel mesh to receive the fiber membrane. Spinning parameters: the propulsion rate of the spinning solution is 2.0mL / h, the spinning air pressure is 0.20MPa, and the receiving distance is 56cm.

[0074] (3) Place the nanofiber membrane in step (2) in a blast oven and heat at 150° C. for 12 hours to obtain a polyvinylidene fluoride ...

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Abstract

The invention discloses a preparation method of a zinc oxide nanowire modified nanofiber filtering membrane, and belongs to the field of textile materials. The specific preparation method comprises the steps of dissolving thermal decomposition zinc salt, antibacterial metal salt and a high polymer in an organic solvent, and obtaining a spinning solution; preparing a nanofiber membrane from a spinning solution obtained by solution jet spinning; then drying the nanofiber membrane at a high temperature lower than the viscous flow temperature of a high polymer to obtain a nanofiber membrane loaded with zinc oxide seed crystals; and dissolving thermal decomposition zinc salt and alicyclic amine substances in water to obtain a growth solution, regulating and controlling the pH value, then immersing the obtained nanofiber membrane loaded with the zinc oxide crystal seeds in the growth solution, conducting heating, and obtaining the zinc oxide nanowire modified nanofiber filtering membrane. The zinc oxide nanowire modified nanofiber filter membrane prepared by the method has super-hydrophilic / underwater oleophobic wettability, has stable high temperature resistance and alkali resistance, can resist microbial pollution, and can be used in the fields of oil-water separation, catalysis, industrial waste gas filtration and desulfurization and the like.

Description

technical field [0001] The invention relates to a preparation method of a nanofiber filter membrane modified by zinc oxide nanowires, belonging to the field of textile materials. Background technique [0002] With the development of human society, the pollution of water resources and atmospheric environment has gradually become the two major factors that make the ecological environment worse. Oily sewage is a common form of water resource pollution, and the key link in its treatment process is the separation of oil and water; for air pollution, filtration is an effective means to remove harmful substances such as solid particles and sulfur-containing gases in the air. Therefore, the separation of oil and water and the filtration of air pollutants have always been research hotspots. [0003] At present, oil-water separation materials can be divided into superhydrophobic / superoleophilic, superhydrophilic / superoleophobic, and intelligent control materials. Among them, superhy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00B01D71/34B01D71/02B01D69/02C02F1/28C02F1/40B01D46/54
CPCB01D67/0013B01D71/34B01D71/024B01D69/02C02F1/285C02F1/40B01D46/543B01D2325/36
Inventor 邓炳耀董文昊李大伟刘峰申莹刘庆生李昊轩
Owner JIANGNAN UNIV
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