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Graphene/polypyrrole hybrid aerogel and preparation method thereof

A graphene and polypyrrole technology is applied in the field of nanomaterials and methods to achieve the effects of simple and easy preparation method, convenient large-scale preparation and novel structure

Inactive Publication Date: 2014-02-26
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is still a great challenge to realize the preparation of graphene-based hybrid airgel by freeze-drying method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Disperse 50 mg GO in 10 mL water and sonicate for 1 h; disperse 50 mg PNT in 10 mL water and sonicate for 1 h; after mixing the above two solutions, continue sonicating for 1 h to obtain a uniformly dispersed suspension. After quenching with liquid nitrogen, the resulting solid mixture was freeze-dried to obtain a porous GO / PNT airgel, denoted as GPA. The GPA was placed in a tubular muffle furnace and calcined at 200 °C for 1 h under the protection of argon. The final product obtained was characterized by SEM, TGA, XRD and FTIR as graphene / polypyrrole airgel.

[0013] If the hybrid airgel (referred to as rGPA-200) obtained by calcination at 200 °C above is used as the working electrode, it is directly assembled into a three-electrode test system (Pt as the counter electrode, saturated calomel electrode as the reference electrode) for electrochemical Test results show that rGPA-200 has high specific capacitance and good cycle stability.

Embodiment 2

[0015] Others are the same as in Example 1, but the calcination temperature is 250° C., and a three-dimensional porous structure hybrid airgel with a higher degree of reduction is obtained.

Embodiment 3

[0017] Others are the same as in Example 1, but the calcination temperature is 400° C., and a three-dimensional porous structure hybrid airgel with a higher degree of reduction is obtained.

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PUM

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Abstract

The invention belongs to the field of nanometer material and technology, and particularly relates to a graphene / polypyrrole hybrid aerogel and a preparation method thereof. The graphene / polypyrrole hybrid aerogel is characterized in that the hybrid aerogel takes graphene oxide (GO) which is conveniently prepared and polypyrrole nanotube (PNT) as starting raw materials, and is prepared through steps of carrying out freeze drying on GO / PNT mixed liquor and carrying out heat treatment on the GO / PNT aerogel at high temperature. The preparation method is simple and easy to operate, the raw materials are cheap and available, and the aerogel is easy to prepare in large scale, has the characteristics of porosity and high conductivity, and has wide application value in the fields of supercapacitor electrode and oil-water separation.

Description

technical field [0001] The invention belongs to the field of nanomaterials and technologies, and in particular relates to a graphene / polypyrrole hybrid airgel and its preparation method and application. The airgel is made of graphene oxide (GO) and polypyrrole nanotube (PNT) as raw materials. The preparation method mainly involves the preparation of GO / PNT mixed solution, freeze-drying and high-temperature heat treatment of GO / PNT airgel, etc. key step. The airgel prepared by the present invention has the characteristics of porosity and high conductivity, and can be used as an electrode material for supercapacitors; at the same time, the airgel calcined at high temperature shows super hydrophobicity, which is beneficial to its performance in oil-water separation and the like. application. The preparation method of the graphene / polypyrrole hybrid airgel provided by the invention is simple and easy, has good repeatability, cheap and easy-to-obtain raw materials, and is conveni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08L79/04C08K3/04C01B31/04C01B32/182
Inventor 冯嘉春叶士兵
Owner FUDAN UNIV
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