Method for producing graphene based on sodium dodecylbenzene sulfonate

A technology of sodium dodecylbenzene sulfonate and graphene, which is applied in the direction of graphene and nano-carbon, can solve the problems of complex chemical vapor deposition process, low yield of micro-mechanical stripping method, and low quality of graphene. Achieve the effects of high practicability, popularization and application value, low price, and simple preparation process

Inactive Publication Date: 2014-07-23
由伟
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the methods used to prepare graphene include micromechanical exfoliation method, chemical vapor deposition method, redox method, solvent exfoliation method, etc., but the yield of micromechanical exfoliation method is low, and the production cost is high. The process is more complicated, the cost is also higher, and the quality of graphene prepared by the redox method is low; the solvent stripping method is to disperse the raw materials in solvents such as nitrogen methyl pyrrolidone, and use the effect of ultrasonic waves to destroy the van der Waals force between the graphite layers. The solvent will rely on its own molecular motion to penetrate into the graphite layer, and finally the graphite will be peeled off layer by layer to obtain graphene
[0005] The solvent exfoliation method can produce high-quality graphene, but the yield is low, only about 8%.

Method used

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  • Method for producing graphene based on sodium dodecylbenzene sulfonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Press figure 1 Shown, the production raw material and proportioning are:

[0030] Expanded graphite: 5%

[0031] Nitromethylpyrrolidone: 45%

[0032] Sodium dodecylbenzenesulfonate: 5%

[0033] Ethanol: 45%

[0034] The preparation process of graphene is:

[0035] (1) Weigh various raw materials as required;

[0036] (2) Put various raw materials into the container and mix and stir to make the raw material composition uniform;

[0037] (3) Put the uniformly mixed raw materials together with the container into a microwave oven for microwave heating. The characteristics are: the heating power is 500W, and the heating time is 30 minutes;

[0038] (4) Turn off the power of the microwave oven and let the product cool down slowly in the microwave oven;

[0039] (5) After the product is cooled to room temperature, it is taken out from the microwave oven, then filtered and dried, and finally the graphene product is obtained.

[0040]

Embodiment 2

[0041] Example 2: Press figure 1 Shown, the production raw material and proportioning are:

[0042] Expanded graphite: 10%

[0043] Nitromethylpyrrolidone: 40%

[0044] Sodium dodecylbenzenesulfonate: 10%

[0045] Ethanol: 40%

[0046] The preparation process of graphene is:

[0047] (1) Weigh various raw materials as required;

[0048] (2) Put various raw materials into the container and mix and stir to make the raw material composition uniform;

[0049] (3) Put the uniformly mixed raw materials together with the container into the microwave oven for microwave heating. The characteristics are: the heating power is 600W, and the heating time is 25 minutes;

[0050] (4) Turn off the power of the microwave oven and let the product cool down slowly in the microwave oven;

[0051] (5) After the product is cooled to room temperature, it is taken out from the microwave oven, then filtered and dried, and finally the graphene product is obtained.

[0052]

Embodiment 3

[0053] Embodiment 3: press figure 1 Shown, the production raw material and proportioning are:

[0054] Expanded graphite: 15%

[0055] Nitromethylpyrrolidone: 35%

[0056] Sodium dodecylbenzenesulfonate: 15%

[0057] Ethanol: 35%

[0058] The preparation process of graphene is:

[0059] (1) Weigh various raw materials as required;

[0060] (2) Put various raw materials into the container and mix and stir to make the raw material composition uniform;

[0061] (3) Put the uniformly mixed raw materials together with the container into the microwave oven for microwave heating. The characteristics are: the heating power is 700W, and the heating time is 20 minutes;

[0062] (4) Turn off the power of the microwave oven and let the product cool down slowly in the microwave oven;

[0063] (5) After the product is cooled to room temperature, it is taken out from the microwave oven, then filtered and dried, and finally the graphene product is obtained.

[0064]

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Abstract

The invention belongs to the field of graphene production and particularly relates to a method for producing graphene from sodium dodecylbenzene sulfonate. The preparation method is characterized by comprising the following steps: (1) weighing, (2) mixing, (3) stirring, (4) microwave heating, (5) cooling, (6) filtering and (7) drying, wherein expandable graphite, N-methyl pyrrolidone, sodium dodecyl benzene sulfonate and ethanol are taken as raw materials. The graphene prepared by the invention, on the one hand, has higher quality, on the other hand, and can also have higher yield, thereby contributing to realizing the large-scale and industrial production of grapheme, so that the method disclosed by the invention has broad application prospect, high practicability and application value and the advantages of low price of raw materials and simple preparation process.

Description

technical field [0001] The invention belongs to the field of graphene production, in particular to a method for producing graphene by using sodium dodecylbenzenesulfonate. Background technique [0002] Graphene is a new type of functional material developed by people in recent years. It is a thin film material with a two-dimensional structure composed of carbon atoms, and its thickness is only one carbon atom thick. [0003] People have found through research that graphene has many excellent properties, such as high strength, good transparency, good thermal conductivity, and low resistivity. Therefore, it is widely used in electronics, energy, aerospace, military, biology, environmental protection, seawater desalination and other fields. It has great potential application value. [0004] At present, the methods used to prepare graphene include micromechanical exfoliation method, chemical vapor deposition method, redox method, solvent exfoliation method, etc., but the yield...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C01B32/19
Inventor 由伟陶匡衡刘亚秀
Owner 由伟
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