Conductive nanofiber porous membrane material with nano metal particles loaded on the surface and preparation method thereof

A technology of nano-metal particles and conductive nano-technology, which is applied in carbon fiber, fiber treatment, textiles and papermaking, etc., can solve the problems such as the electrical conductivity of the material, and achieve good processability, increase the contact area, and improve the electrical conductivity.

Active Publication Date: 2021-08-27
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this application is that the nanofiber membrane material with high specific surface area is used as the carrier material for loading nanometer metal particles, and the nanofiber porous membrane that is more conducive to controlling the structure and size of metal particles, and realizes high activity of materials and high performance of metal particles , the nanofibrous porous membrane has potential applications in the fields of filtration, catalysis, antibacterial and surface-enhanced Raman, but the disadvantage is that the conductive properties of the material are not considered

Method used

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  • Conductive nanofiber porous membrane material with nano metal particles loaded on the surface and preparation method thereof
  • Conductive nanofiber porous membrane material with nano metal particles loaded on the surface and preparation method thereof
  • Conductive nanofiber porous membrane material with nano metal particles loaded on the surface and preparation method thereof

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Embodiment 1

[0064] This embodiment discloses a conductive nanofiber porous membrane material loaded with nano metal particles on the surface, comprising the following preparation steps:

[0065] (1) Preparation of nanofiber suspension: disperse 10 g of ethylene vinyl alcohol copolymer nanofibers with a diameter of 100 to 200 nm in a mixed solvent with a mass ratio of 1000 g of ethanol to deionized water of 1:1, and stir to form nanofibers The ethylene vinyl alcohol copolymer nanofiber suspension with a solid content (mass percentage concentration) of 1 wt%, is sealed and stored.

[0066] (2) Preparation of nanofiber porous base membrane: apply the ethylene vinyl alcohol copolymer nanofiber suspension obtained in step (1) to one surface of the cotton fiber woven cloth by spraying, the coating thickness is 20 μm, and the coating thickness is 20 μm. Density is 10g / m 2 , and vacuum-dried at normal temperature to prepare a nanofiber porous base film with a pore diameter of 200-600 nm, which i...

Embodiment 2

[0073] This embodiment discloses a conductive nanofiber porous membrane material loaded with nano metal particles on the surface, comprising the following preparation steps:

[0074] (1) Preparation of nanofiber suspension: disperse 10 g of ethylene vinyl alcohol nanofibers with a diameter of 100 to 200 nm in a mixed solvent with a mass ratio of 1000 g of ethanol to deionized water of 1:1, and stir evenly to form a nanofiber solid. The ethylene vinyl alcohol copolymer nanofiber suspension with a content (mass percentage concentration) of 1 wt% is sealed and stored.

[0075] (2) Preparation of nanofiber porous base membrane: apply the ethylene vinyl alcohol copolymer nanofiber suspension obtained in step (1) on both surfaces of the polyacrylonitrile woven cloth by spraying, and the coating thickness is 10 μm. Coating density is 5g / m 2 , and vacuum-dried at normal temperature to prepare a nanofiber porous base membrane composed of polyacrylonitrile woven cloth and nanofiber coa...

Embodiment 3

[0082] (1) Preparation of nanofiber suspension: disperse 10 g of ethylene vinyl alcohol nanofibers with a diameter of 150 to 300 nm in a mixed solvent with a mass ratio of 1000 g of ethanol and deionized water of 1:1, and stir to form a solid content of nanofibers (mass percentage concentration) is 1wt% ethylene vinyl alcohol copolymer nanofiber suspension, sealed and preserved.

[0083] (2) Preparation of nanofiber porous base membrane: apply the ethylene vinyl alcohol copolymer nanofiber suspension obtained in step (1) to one surface of a polyacrylonitrile woven cloth by spraying, the coating thickness is 30 μm, and the coating thickness is 30 μm. The density is 20g / m 2 , and vacuum-dried at normal temperature to prepare a nanofiber porous base membrane composed of polyacrylonitrile woven cloth and nanofiber coating attached to the surface with a pore diameter of 500-800 nm.

[0084] (3) Configure dopamine hydrochloride aqueous solution: configure a tris-HCl (Tris-HCl) buff...

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Abstract

The invention discloses a conductive nanofiber porous membrane material with nanometer metal particles loaded on the surface and a preparation method thereof, belonging to the technical field of nanomaterials. The porous membrane material is composed of a conductive nanofiber porous membrane and nano-metal particles loaded on the surface of the conductive nanofiber porous membrane. The conductive nanofiber porous membrane is composed of a carbon fiber three-dimensional network skeleton and a graphene layer coated on the carbon fiber surface. The carbon fiber three-dimensional network The skeleton is composed of micron carbon fiber substrate and nano carbon fiber coating loaded on its surface. In the preparation method of the present invention, micron-scale woven cloth layers are stacked and combined with nano-scale nanofiber layers, and after carbonization, a three-dimensional network skeleton of micro- and nano-scale carbon fibers with a gradient structure is formed, which has the characteristics of excellent electrical conductivity and high sensitivity. The polydopamine deposited on the surface of the nanofiber is carbonized at high temperature into a graphene layer, which is coated on the surface of the three-dimensional network skeleton of the carbon fiber, which is more conducive to the excellent electrical conductivity of the graphene layer and broadens the application field of the nanofiber membrane material.

Description

technical field [0001] The invention relates to a conductive nanofiber material, which belongs to the technical field of nanomaterials, in particular to a conductive nanofiber porous membrane material with nanometer metal particles loaded on the surface and a preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of industrialization, the pollution of organic pollutants such as aromatic compounds to water bodies has become increasingly serious. It is not only highly toxic, but also difficult to degrade in nature. Therefore, the detection and treatment of aromatic compound wastewater is particularly important. At present, the functions of the materials for the detection and treatment of aromatic compound wastewater are relatively single, and they only have the function of detection or catalysis. There is no report on multifunctional materials integrating detection and catalysis. Multifunctional membrane materials are of grea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/83D06M11/74D06M101/40
CPCD06M11/74D06M11/83D06M2101/40
Inventor 刘轲程盼王栋郭启浩刘琼珍鲁振坦李沐芳王雯雯蒋海青赵青华
Owner WUHAN TEXTILE UNIV
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