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A kind of porous layered graphene frame material and its preparation method and application

A frame material, graphene technology, applied in the field of materials, can solve the problems of poor channel arrangement, large pore size, wide pore size distribution, etc., to increase the pore size, accurately controllable adjustment, and ensure the order and uniformity of the channels Effect

Active Publication Date: 2021-11-19
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 method for preparing a porous layered graphene framework material for the problems of large pore size, wide pore size distribution, and poor channel arrangement in existing graphene porous materials.

Method used

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  • A kind of porous layered graphene frame material and its preparation method and application
  • A kind of porous layered graphene frame material and its preparation method and application
  • A kind of porous layered graphene frame material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0028] (1) Add 100 mg of diaminopolyetheramine with a molecular weight of 2000 g / mol to 50 ml of an aqueous suspension of graphene oxide three-dimensional structure with a concentration of 1 mg / ml, mix well and react under heating conditions at 50°C 10 hours gave a mixture.

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

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

Embodiment 2

[0032] (1) Add 100 mg of bisaminopolyetheramine with a molecular weight of 600 g / mol to 50 ml of an aqueous suspension of graphene oxide three-dimensional structure with a concentration of 1 mg / ml, mix well and react under heating conditions at 70°C 10 hours gave a mixture.

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

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

Embodiment 3

[0036] (1) Add 100 mg of bisaminopolyetheramine with a molecular weight of 2000 g / mol to 50 ml of an aqueous suspension of graphene oxide three-dimensional structure with a concentration of 1 mg / ml, mix well and react under heating conditions at 100°C 2 hours to give 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 layered graphene framework material.

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

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Abstract

The invention relates to a porous layered graphene frame material and its preparation method and application. The method comprises the steps of: reacting the graphene oxide three-dimensional structure with the bisaminopolyetheramine at a certain temperature for a certain period of time, removing unreacted polyetheramine through filtration-washing, and obtaining a porous layered graphene framework material after drying. Compared with the prior art, the raw materials involved in the invention are cheap, the reaction conditions are mild, and the process is simple. The porous layered graphene framework material obtained by the present invention has uniform and controllable micropores / mesoporous channels, and can be used for biological detection, chemical catalysis, electrochemical energy storage, gas storage and gas separation, wastewater treatment and environmental protection, etc. fields.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a porous layered graphene frame material and a preparation method thereof. Specifically, adding bisamino polyether amine to the three-dimensional structure of graphene oxide, reacting at a certain temperature for a certain period of time, removing unreacted polyether amine by filtration-washing to obtain a wet state porous layered graphene framework material, which is obtained after drying Dry state porous layered graphene framework 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 cataly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184C01B32/194
CPCC01P2002/88C01P2004/03C01B32/184C01B32/194
Inventor 卢红斌阮英波张佳佳
Owner FUDAN UNIV
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