Inorganic nano-composite anion exchange membrane and preparation method thereof

An anion exchange membrane and nanocomposite technology, applied in the field of inorganic nanocomposite anion exchange membrane and its preparation, can solve the problems of low membrane conductivity, uncontrollable size and shape, hindering organic membrane ion channels, etc., and achieve simple preparation method , cost reduction effect

Active Publication Date: 2014-12-24
UNIV OF SCI & TECH OF CHINA
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned composite anion exchange membrane has excellent mechanical properties and thermal stability, the addition of inorganic compo

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Inorganic nano-composite anion exchange membrane and preparation method thereof
  • Inorganic nano-composite anion exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The invention discloses a preparation method of a nanocomposite anion exchange membrane, which comprises the following steps:

[0032] Dissolving brominated polyphenylene ether in the first solvent, adding a basic functional reagent to react to obtain a positively charged brominated polyphenylene ether, the basic functional reagent is trimethylamine, trimethylphosphine, guanidinium compounds, N-methylimidazole, benzimidazole and thiazole;

[0033] adding graphene oxide into the second solvent, and ultrasonicating to obtain the stripped graphene oxide solution;

[0034] The positively charged brominated polyphenylene ether is dissolved in the graphene oxide solution and stirred to obtain a casting liquid, and the casting liquid is cast into a film to obtain an anion exchange membrane.

[0035] In the above preparation process, the present invention firstly prepares positively charged brominated polyphenylene ether, and prepares a graphene oxide solution by ultrasonic st...

specific Embodiment approach

[0052] In order to further illustrate the technical solution of the present invention, the preferred embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0053] The solvents used in the examples of the present invention were all purchased from Sinopharm Group, and the basic functional reagents and graphene oxide were purchased from Anaiji Chemical.

Embodiment 1

[0055] 1. Preparation of positively charged brominated polyphenylene ether: Dissolve 1 g of brominated polyphenylene ether with a bromination degree of 57.8% in 4 mL of N-methylpyrrolidone, stir well, and add 600 μL of N-methylpyrrolidone after the polymer is completely dissolved. -Methylimidazole, wherein the molar ratio of N-methylimidazole to brominated poly(phenylene ether) bromomethyl is 0.863:1, and reacted with magnetic stirring at 30° C. for 10 h. The above reaction solution was poured into 50 mL of water to precipitate the polymer, and then washed with water three times to remove unreacted N-methylimidazole, and vacuum-dried at 60°C to obtain positively charged brominated polyphenylene ether.

[0056] 2. Configuration of graphene oxide solution: put 0.5g of graphene oxide with a degree of oxidation of 32.5% in 100mL of dimethyl sulfoxide, ultrasonicate at 25°C for 1.5h, and fully peel off graphene oxide to obtain 0.5mg / mL of graphene oxide solution in dimethyl sulfox...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to view more

Abstract

The invention provides an inorganic nano-composite anion exchange membrane and a preparation method thereof. According to the preparation method, the nano-composite anion exchange membrane is prepared by taking graphene oxide as an inorganic component and alkaline-functionalized polyphenyl ether bromide as an organic component. Due to the property of the two-dimensional layer shape of graphene oxide, regular communicated ion channels can be conveniently constructed and the conduction rate of the anion exchange membrane can be increased; meanwhile, graphene oxide is very high in strength, and due to the addition of graphene oxide, the mechanical property of the anion exchange membrane can be greatly improved; in addition, graphene oxide is very high in specific surface area, so that an effect can be generated under the condition that a very small amount of graphene oxide is added. Therefore, the nano-composite anion exchange membrane is relatively low in preparation cost, and the preparation method is simple, easy to perform and convenient for large-scale production.

Description

technical field [0001] The invention relates to the technical field of membranes, and more specifically relates to an inorganic nanocomposite anion exchange membrane and a preparation method thereof. Background technique [0002] At present, anion-exchange membranes are widely used in seawater desalination, diffusion dialysis, electrodialysis, alkaline fuel cells and chemical sensors, etc. Therefore, the preparation method and performance of anion-exchange membranes have always attracted the attention of the theoretical and industrial circles. Existing anion exchange membranes are widely based on polymer materials. Due to the nature of organic materials, these membranes usually have poor mechanical properties and thermal stability, which limits their applications in certain fields. More importantly, it is difficult to independently adjust various properties of the anion exchange membrane of the polymer matrix, so it is difficult to prepare an anion exchange membrane with exc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08J5/22C08L71/12C08K9/04C08K3/04C08G65/48
Inventor 徐铜文冉瑾
Owner UNIV OF SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap