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Preparation method of aminated graphene oxide

A technology of amination and graphene, which is applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of poor electrical conductivity and high temperature resistance, and achieve enhanced electrical conductivity and thermal stability, small sheet diameter, layered low number effect

Pending Publication Date: 2021-11-23
CHANGZHOU HIGHBERY NEW NANO MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aminated graphene oxide prepared by conventional preparation methods has the problems of poor electrical conductivity and high temperature resistance.

Method used

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  • Preparation method of aminated graphene oxide
  • Preparation method of aminated graphene oxide
  • Preparation method of aminated graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Step 1, uniformly disperse 50kg of graphene oxide in 1000kg of solvent N, N-dimethylformamide (DMF) through ultrasonic, shearing, and emulsified composite dispersion methods, add thionyl chloride and oxychloride at 5°C The mass ratio of sulfone to graphene oxide powder is 1:4. After the dropwise addition is completed, the temperature is raised to 60°C for reaction. During the reaction, condensation is refluxed and exhaust gas is absorbed at the same time. After 12 hours of reaction, an appropriate amount of water is slowly added until there is no Gas is generated, then suction filtered and washed to obtain activated acyl chloride-based graphene oxide.

[0032] Step 2: Add 100kg of polyphosphoric acid into the reaction kettle, heat to 160°C, then add 16.7kg of p-nitrobenzoic acid and 12kg of semicarbazide hydrochloride, a large amount of gas will be generated immediately, stir vigorously to make the mixture uniform. The temperature was raised to 160°C for 2 hours. After...

Embodiment 2

[0036] Step 1, uniformly disperse 50kg of graphene oxide in 1000kg of solvent DMF through ultrasonic, shearing, and emulsified composite dispersion methods, add thionyl chloride at 10°C, and the mass ratio of thionyl chloride to graphene oxide powder is 1:3, after the dropwise addition is completed, the temperature is raised to 60°C for reaction. During the reaction, reflux is condensed and tail gas is absorbed at the same time. After 10 hours of reaction, an appropriate amount of water is slowly added until no gas is generated in the system, and then filtered and washed to obtain activation acyl chloride-based graphene oxide.

[0037] Step 2: Add 100kg of polyphosphoric acid into the reaction kettle, heat to 150°C, then add 16.7kg of p-nitrobenzoic acid and 12kg of semicarbazide hydrochloride, a large amount of gas will be generated immediately, stir vigorously to make the mixture uniform. The temperature was raised to 150°C for 5h. After the reaction solution is cooled, pou...

Embodiment 3

[0043] Step 1, uniformly disperse 50kg of graphene oxide in 1000kg of solvent DMF through ultrasonic, shearing, and emulsified composite dispersion methods, add thionyl chloride at 10°C, and the mass ratio of thionyl chloride to graphene oxide powder is 1:3, after the dropwise addition is completed, the temperature is raised to 60°C for reaction. During the reaction, reflux is condensed and tail gas is absorbed at the same time. After 10 hours of reaction, an appropriate amount of water is slowly added until no gas is generated in the system, and then filtered and washed to obtain activation acyl chloride-based graphene oxide.

[0044] Step 2: Add 100kg of polyphosphoric acid into the reaction kettle, heat to 160°C, then add 16.7kg of p-nitrobenzoic acid and 12kg of semicarbazide hydrochloride, a large amount of gas will be generated immediately, stir vigorously to make the mixture uniform. The temperature was raised to 150°C for 5h. After the reaction solution is cooled, pou...

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Abstract

The invention discloses a preparation method of aminated graphene oxide, belongs to the technical field of graphene preparation, and aims to solve the problems of low conductivity and high temperature resistance of aminated graphene oxide prepared by a conventional preparation method at present. The preparation method comprises the following steps: firstly, carrying out acylating chlorination reaction on graphene oxide to obtain an activated graphene oxide dispersion liquid; and then adding 2, 5-bis (4-aminophenyl)-1, 3, 4-oxadiazole to carry out an amination reaction so as to finally obtain the aminated graphene oxide. The preparation method disclosed by the invention is simple, the lamellar structure of the graphene oxide is well maintained, so that the original characteristics of the graphene oxide are maintained, and the conductivity and the thermal stability of the material are remarkably enhanced.

Description

technical field [0001] The invention belongs to the technical field of graphene preparation, in particular to a preparation method of aminated graphene oxide. Background technique [0002] Graphene is a carbon atom with sp 2 The hybrid orbitals form a hexagonal planar film with a honeycomb lattice. It is a two-dimensional material with a thickness of only one carbon atom. It is the thinnest and strongest material currently in the application field. [0003] Graphene has a huge theoretical specific surface area, stable physical and chemical properties, and can maintain good structural stability under high operating voltage and high current rapid charge and discharge; graphene also has excellent electrical conductivity, which can reduce internal resistance and improve super Cycling stability of capacitors; in addition, graphene is almost completely transparent, absorbing only 2.3% of light, and is so dense that even the smallest gas atoms (helium atoms) cannot penetrate. The...

Claims

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Application Information

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IPC IPC(8): C01B32/198
CPCC01B32/198
Inventor 宋春丽蒋炎张荣耀邵筱珏马宏明陈润
Owner CHANGZHOU HIGHBERY NEW NANO MATERIALS TECH CO LTD
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