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Porous graphene frame material and preparation method and application thereof

A technology of porous graphene and frame materials, applied in the field of materials, can solve the problems of wide pore size distribution, large pore size, and poor channel arrangement regularity, and achieve the effect of improving stability and increasing pore size

Inactive Publication Date: 2018-11-27
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a porous graphene framework material prepared from graphene oxide and its preparation method and application for the existing graphene porous materials with large pore size, wide pore size distribution, and poor channel arrangement regularity.

Method used

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  • Porous graphene frame material and preparation method and application thereof
  • Porous graphene frame material and preparation method and application thereof
  • Porous graphene frame material and preparation method and application thereof

Examples

Experimental program
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Embodiment 1

[0028] (1) Add 100 mg of bisaminopolyetheramine with a molecular weight of 2000 g / mol to 50 ml of graphene oxide aqueous solution with a concentration of 1 mg / ml, mix well, and react under heating at 50°C for 10 hours to obtain a mixture.

[0029] (2) The mixture obtained in step (1) is centrifuged and washed several times to remove unreacted polyetheramine to obtain a wet state porous graphene framework material.

[0030] (3) Freeze-drying the wet porous graphene framework material obtained in step (2) to obtain a dry porous graphene framework material.

Embodiment 2

[0032] (1) Add 100 mg of bisaminopolyetheramine with a molecular weight of 600 g / mol to 50 ml of graphene oxide aqueous solution with a concentration of 1 mg / ml, mix well, and react under heating at 70°C for 10 hours to obtain a mixture.

[0033] (2) The mixture obtained in step (1) is subjected to vacuum filtration-water washing several times to remove unreacted polyetheramine to obtain a wet state porous graphene framework material.

[0034] (3) Naturally drying the wet porous graphene framework material obtained in step (2) to obtain a dry porous graphene framework material.

Embodiment 3

[0036] (1) Add 100 mg of triaminopolyetheramine with a molecular weight of 2000 g / mol to 50 ml of graphene oxide ethanol solution with a concentration of 1 mg / ml, mix well and react under heating at 80°C for 12 hours to obtain a mixture.

[0037] (2) The mixture obtained in step (1) is centrifuged and washed with ethanol several times to remove unreacted polyetheramine, and obtain a wet state porous graphene framework material.

[0038] (3) Vacuum drying the wet porous graphene framework material obtained in step (2) to obtain a dry porous graphene framework material.

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Abstract

The invention relates to a porous graphene frame material and a preparation method thereof. The method comprises the following steps that a graphene oxide solution reacts with polyamino-polyether-amine at a certain temperature for a certain period of time, un-reacted polyether-amine is removed through filtering-washing, and after drying is carried out, the porous graphene frame material is obtained. Compared with the prior art, the porous graphene frame material and the preparation method thereof have the advantages that the raw materials are low in price, the reaction condition is mild, and the process is simple; the obtained porous graphene frame material has microporous / mesoporous pores with pore sizes capable of being adjusted in a large range, and can be applied to various fields suchas biological detection, chemical catalysis, electrochemical energy storage, gas storage, gas separation, wastewater treatment, environmental protection, nano reactors and the like.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a porous graphene frame material and a preparation method thereof. Specifically, polyaminopolyetheramine is added to the graphene oxide solution, reacted at a certain temperature for a certain period of time, and the unreacted polyetheramine is removed by filtration-washing to obtain a wet state porous graphene framework material, and dry state porous graphite is obtained after drying vinyl frame material. Background technique [0002] Porous materials are a class of materials that form a network structure of interpenetrating or closed pores. Due to the special porous structure, porous materials usually have the characteristics of high specific surface area, high porosity, high permeability, high adsorption, assembleability, controllable pore size and structural diversity. This makes porous materials widely used in many fields such as catalysts and their supports, adsorption an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C01B32/184
Inventor 卢红斌阮英波张佳佳马建华赵则栋
Owner FUDAN UNIV
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