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Synthetic method for graphene-based three-dimensional polyaniline array nanocomposite

A nanocomposite, graphene-based technology, applied in the field of material chemistry, can solve the problems of limiting the electrochemical performance of materials and irregular morphology

Active Publication Date: 2013-06-26
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the synthesized material does not have a regular morphology, which limits the electrochemical performance of the material.
However, graphene-based three-dimensional polyaniline composites connected by chemical bonds and having an array structure have not been reported.

Method used

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  • Synthetic method for graphene-based three-dimensional polyaniline array nanocomposite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0016] Concrete preparation steps are as follows:

[0017] 1) Disperse 12 mg graphene in 10 mL acetonitrile, add 24 mg tetranitrobenzene tetrafluoroborate diazonium salt as a functional reagent, and 300 mg tetrabutyltetrafluoroborate as a supporting electrolyte, and store in a dark place Stand still for 5 h, centrifuge the product, wash with ethanol, and remove excess diazonium salt and electrolyte;

[0018] 2) Use acetic acid and zinc powder to reduce nitro groups to amine groups: add a certain amount of acetic acid, zinc powder, and ammonium chloride to an ethanol aqueous solution with a volume ratio of 3:2, and the molar ratio of each reactant is nitro compound / Zinc powder=1 / 8; Nitro compound / acetic acid=1 / 0.2; Nitro compound / NH 4 Cl= 1 / 0.12, reacted at 80°C for 3 hours, the product was centrifuged, excess zinc powder was removed with HCl, and the product was vacuum-dried at 60°C for 4 hours;

[0019] 3) Disperse 3 mg of the above product in 1.0 M H 2 SO 4 Add aniline ...

Embodiment 3

[0021] Concrete preparation steps are as follows:

[0022] 1) Disperse 24 mg of graphene in 20 mL of acetonitrile, add 48 mg of tetranitrobenzene tetrafluoroborate diazonium salt as a functional reagent, and 600 mg tetrabutyltetrafluoroborate as a supporting electrolyte, and store in a dark place After standing for 10 h, the product was centrifuged and washed with ethanol to remove excess diazonium salt and electrolyte;

[0023] 2) Use acetic acid and zinc powder to reduce nitro groups to amine groups: add a certain amount of acetic acid, zinc powder, and ammonium chloride to an ethanol aqueous solution with a volume ratio of 3:2, and the molar ratio of each reactant is nitro compound / Zinc powder=1 / 8; Nitro compound / acetic acid=1 / 0.2; Nitro compound / NH 4 Cl= 1 / 0.12, reacted at 80°C for 3 hours, the product was centrifuged, excess zinc powder was removed with HCl, and the product was vacuum-dried at 60°C for 4 hours;

[0024] 3) Disperse 6 mg of the above product in 1.0 M H ...

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Abstract

The invention discloses a synthetic method for graphene-based three-dimensional polyaniline array nanocomposite, which is different from the previously reported methods. In the synthetic method, graphene and polyaniline are connected by chemical bonds rather by physical acting force. The graphene-based three-dimensional polyaniline array is a nanocomposite with an array structure. The invention further provides a synthetic method of the nanocomposite. The synthetic method comprises the following steps: finally adding aminobenzene monomer and an oxidant under acidic conditions so as to initiate in-situ polymerization to obtain the graphene polyaniline array. Different from the graphene-based three-dimensional polyaniline composite connected through physical adsorption, the nanocomposite has the advantages of being good in thermal stability, small in resistance, good in electric chemical property and the like.

Description

technical field [0001] The invention relates to the synthesis of a multi-level nanometer material graphene-based three-dimensional polyaniline array, relates to the field of material chemistry, in particular to the synthesis of a graphene-based polyaniline composite material connected by chemical bonds and its application as a supercapacitor electrode material. Background technique [0002] Graphene is a new type of carbon material composed of a single layer of carbon atoms and has a two-dimensional lattice structure. It has a large specific surface area, good electrical conductivity and mechanical properties, has been widely used in the synthesis of nanocomposites and has great application potential in sensors, storage batteries, fuel cells and supercapacitors. As a kind of conductive polymer, polyaniline has good conductivity, biocompatibility, simple preparation process, and low cost, making it have broad application prospects in sensors, supercapacitors, and the like. P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K9/04C08K9/02C08K3/04
Inventor 汪莉宋永海叶银坚许富刚谭宏亮陈受惠
Owner JIANGXI NORMAL UNIV
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