Metal-organic framework (MOF) modified graphene/polymer hybrid proton exchange membrane and preparation method thereof

A metal-organic framework and proton exchange membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of reducing membrane performance, etc., and achieve easy batch production, broad application prospects, and good industrial production basis Effect

Inactive Publication Date: 2015-06-03
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, both MOF and GO are prone to agglomeration, which reduces the membrane performance.

Method used

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  • Metal-organic framework (MOF) modified graphene/polymer hybrid proton exchange membrane and preparation method thereof
  • Metal-organic framework (MOF) modified graphene/polymer hybrid proton exchange membrane and preparation method thereof
  • Metal-organic framework (MOF) modified graphene/polymer hybrid proton exchange membrane and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] At room temperature, 1468 mg of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), 810.6 mg 2-methylimidazole (MIm) were dissolved in 50 ml methanol, and ultrasonically placed to obtain a uniform solution; slowly add 2-methylimidazole solution and 14.68 mg graphene oxide (GO) to nitric acid hexahydrate In the zinc methanol solution, ultrasonic 10min, let stand for 1h. The product obtained above was washed with a large amount of methanol, and finally the product was dried, and the obtained product was recorded as ZIFGO-1, that is, metal-organic framework-modified graphene oxide. Take a certain amount of Nafion TM solution, after rotary evaporation, N, N-dimethylformamide was added to obtain a 100 mg / ml Nafion / DMF solution, and rotary evaporation was continued for 10 minutes. Add a certain amount of ZIFGO to the above solution so that the mass ratio of ZIFGO:Nafion is 1:100, and continue the rotary evaporation. Finally, ultrasonically disperse the solution for 30 minute...

Embodiment 2

[0032] At room temperature, 1468 mg of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), 810.6 mg 2-methylimidazole (MIm) were dissolved in 50 ml methanol, and ultrasonically placed to obtain a uniform solution; slowly add 2-methylimidazole solution and 14.68 mg graphene oxide (GO) to nitric acid hexahydrate In the zinc methanol solution, ultrasonic 10min, let stand for 1h. The product obtained above was washed with a large amount of methanol, and finally the product was dried, and the obtained product was recorded as ZIFGO-1, that is, metal-organic framework-modified graphene oxide. Take a certain amount of Nafion TM solution, after rotary evaporation, N, N-dimethylformamide was added to obtain a 100 mg / ml Nafion / DMF solution, and rotary evaporation was continued for 10 minutes. Add a certain amount of ZIFGO-1 to the above solution so that the mass ratio of ZIFGO:Nafion is 3:100, and continue the rotary evaporation. Finally, ultrasonically disperse the solution for 30 minu...

Embodiment 3

[0039] At room temperature, 1468 mg of zinc nitrate hexahydrate (Zn(NO 3 ) 2 ·6H 2 O), 810.6 mg 2-methylimidazole (MIm) were dissolved in 50 ml of methanol, and ultrasonically placed to obtain a uniform solution; slowly added 2-methylimidazole solution and 146.8 mg graphene oxide (GO) to nitric acid hexahydrate In the zinc methanol solution, ultrasonic 10min, let stand for 1h. The product obtained above was washed with a large amount of methanol, and finally the product was dried, and the obtained product was recorded as ZIFGO-10, that is, metal-organic framework-modified graphene oxide. Take a certain amount of Nafion TM solution, after rotary evaporation, N, N-dimethylformamide was added to obtain a 100 mg / ml Nafion / DMF solution, and rotary evaporation was continued for 10 minutes. Add a certain amount of ZIFGO-10 to the above solution so that the mass ratio of ZIFGO:Nafion is 1:100, and continue the rotary evaporation. Finally, ultrasonically disperse the solution for ...

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Abstract

The invention belongs to the technical field of membranes and particularly relates to a metal-organic framework (MOF) modified graphene/polymer hybrid proton exchange membrane and a preparation method thereof. According to the hybrid proton exchange membrane, an MOF is used for modifying graphene inorganic particles having a special structure, so that the proton conductivity of the proton exchange membrane can be effectively improved, and methanol permeability can be effectively inhibited; the MOF grows on graphene oxide in situ so as to effectively avoid the formation of multilayer graphene and increase the proton transfer rate; the framework structure of the MOF benefits the quick passing of protons; moreover, since he pore size of the MOF has selectivity, the sinuosity of methanol permeability channels can be increased, and therefore, the methanol permeability of the hybrid proton exchange membrane is reduced. The preparation method is simple in operation process and mild in preparation conditions, can be put into mass and large-scale production, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of membrane technology, and in particular relates to a graphene / polymer hybrid proton exchange membrane modified by a metal organic framework and a preparation method thereof. Background technique [0002] Metal-organic framework (MOF) is a kind of porous coordination compound, with its regular structure, good stability, super high specific surface area and other properties, it has become the research direction of many scientists. In recent years, scientists have discovered that MOF also has obvious advantages in proton conduction: the regular pore structure can provide proton transfer channels, and the framework itself contains proton transfer media, such as water and acid. Therefore also considered proton transport materials such as Nafion TM (perfluorosulfonic acid resin) and other alternative materials. Adding MOF materials to polymer membranes can significantly increase the proton conductivity of the resulting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/14C08J7/12C08L101/04C08L101/06C08L61/16C08L79/04C08L79/08C08K9/04C08K3/04B01D71/66B01D71/58B01D67/00
Inventor 杨丽佳汤蓓蓓武培怡
Owner FUDAN UNIV
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