Thermal response composite proton membrane as well as preparation method and application thereof

A proton membrane, thermal response technology, applied in the direction of conductive materials dispersed in non-conductive inorganic materials

Pending Publication Date: 2022-05-10
HARBIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no proton exchange membrane with thermoresponsive switching function has been reported

Method used

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  • Thermal response composite proton membrane as well as preparation method and application thereof
  • Thermal response composite proton membrane as well as preparation method and application thereof

Examples

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preparation example Construction

[0022] The invention provides a method for preparing a thermoresponsive composite proton membrane, comprising the following steps:

[0023] (1) Mix the zirconium-based metal-organic framework composite material loaded with 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid with water to obtain a suspension; the loaded 4-[(2-hydroxybenzyl)amino A zirconium-based metal-organic framework composite material of ]benzenesulfonic acid is prepared from 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid and a zirconium-based metal-organic framework material;

[0024] (2) mixing polyvinyl alcohol solution and poly(2-acrylamide-2-methyl-1-propanesulfonic acid) solution to obtain a mixed solution;

[0025] (3) adding dropwise the suspension obtained in the step (1) to the mixed solution obtained in the step (2), and then adding glutaraldehyde to carry out a cross-linking reaction to obtain a cross-linked product;

[0026] (4) casting the cross-linked product obtained in the step (3) into a mold ...

Embodiment 1

[0085] Preparation method of heat-responsive composite proton membrane

[0086] (1) Mix 0.03 g of zirconium-based metal-organic framework composite material loaded with 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid and 4 mL of distilled water for 0.5 hours to obtain a suspension;

[0087] The zirconium-based metal-organic framework composite material loaded with 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid is prepared from 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid and zirconium-based metal-organic framework materials Obtain; 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid and zirconium-based metal-organic framework in the zirconium-based metal-organic framework composite material loaded with 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid The mass ratio of materials is 0.29:1;

[0088] The preparation method of the zirconium-based metal-organic framework material is:

[0089] Mix 121.5mg of zirconium source zirconium oxychloride, 53mg of organic ligand trimesic acid, 6...

Embodiment 2

[0100] The thermally responsive composite proton membrane was prepared according to the method of Example 1, and the proton conductivity and the proton conduction switch ratio of the prepared thermally responsive composite proton membrane were detected by the same method. The specific results are shown in Table 1;

[0101] Different from Example 1, the quality of the zirconium-based metal-organic framework composite material loaded with 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid in the step (1) is 60 mg; the step (3) The mass of zirconium-based metal-organic framework composites loaded with 4-[(2-hydroxybenzyl)amino]benzenesulfonic acid in medium suspension is equal to the mass of polyvinyl alcohol and poly(2-acrylamide-2-methyl-1 - propanesulfonic acid) 20% of the total mass.

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Abstract

The invention provides a preparation method of a thermal response composite proton membrane, which comprises the following steps of: selecting 4-[(2-hydroxy benzyl) amino] benzenesulfonic acid as a thermal response switch, transferring protons from amino of a 4-[(2-hydroxy benzyl) amino] benzenesulfonic acid ketone structure to carbonyl oxygen under thermal stimulation through a pre-existing intramolecular hydrogen bond configuration, and performing thermal response to obtain the thermal response composite proton membrane. An alcohol structure of 4-[(2-hydroxybenzyl) amino] benzenesulfonic acid is formed, a reversible isomerization reaction of ketone type and enol type is realized, the proton conduction rate of the composite proton membrane is controlled by using temperature, and ZOF is used as a carrier to load more 4-[(2-hydroxybenzyl) amino] benzenesulfonic acid molecules, so that the composite proton membrane has a good application prospect. According to the present invention, the poly (2-acrylamide-2-methyl-1-propanesulfonic acid) is adopted to prepare the matrix membrane, the number of protons in the proton conduction process of the composite proton membrane is increased, the switching rate is improved, the poly (2-acrylamide-2-methyl-1-propanesulfonic acid), the polyvinyl alcohol and the glutaraldehyde are adopted to prepare the matrix membrane with characteristics of high proton conduction rate and good mechanical stability, and the switching rate is further improved.

Description

technical field [0001] The invention relates to the field of proton membrane materials, in particular to a heat-responsive composite proton membrane and its preparation method and application. Background technique [0002] In nature, many biological structures can manipulate substance transport and signal transduction by generating unique responses to external stimuli. Similarly, when more and more researchers develop proton-conducting materials, they also focus on giving proton-conducting materials a stimulus switch. [0003] The composite proton exchange membrane material with stimulus-response conversion function prepared in the prior art, the external stimulation conditions for the reversible conversion of its proton conductivity between low / high are all ultraviolet light / visible light, that is, protons with optical switching function exchange membrane. However, no PEMs with thermoresponsive switching function have been reported. Therefore, how to prepare a proton exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08L87/00C08L29/04C08L33/24C08K5/42C08K5/07H01B1/20
CPCC08J5/2256H01B1/20C08J2387/00C08J2429/04C08J2433/24C08K5/42C08K5/07
Inventor 张凤曲凤玉
Owner HARBIN NORMAL UNIVERSITY
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