Method for rapid impurity-free reduction of graphene oxide

A graphene and impurity-free technology, which is applied in the field of rapid and impurity-free reduction of graphene oxide, can solve the problems of high energy consumption, long time consumption, and reduced graphene quality, and achieve high specific surface area, difficult agglomeration, and wide applicability

Inactive Publication Date: 2019-11-15
上海利物盛纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the most commonly used and most researched method is to reduce graphene oxide by sodium borohydride. , a large number of impurities will be introduced during the reduction process, which will reduce the quality of the obtained graphene and cause many restrictions on the subsequent application of graphene.

Method used

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  • Method for rapid impurity-free reduction of graphene oxide
  • Method for rapid impurity-free reduction of graphene oxide
  • Method for rapid impurity-free reduction of graphene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The method for fast impurity-free reduction of graphene oxide comprises the following steps:

[0032] 1. Place 5g of graphene oxide in a vacuum oven, and evacuate the oven at room temperature until the pressure inside the oven reaches 5000Pa;

[0033] 2. Set the temperature and heating rate of the vacuum oven to 200°C and 10°C / min, respectively, to heat the graphene oxide;

[0034] 3. Keep the temperature of the oven for 2 hours to fully heat the graphene oxide;

[0035] 4. Stop heating, and after the temperature of the oven drops to room temperature, open the vacuum valve and collect the powder to obtain reduced graphene oxide.

Embodiment 2

[0037] The method for fast impurity-free reduction of graphene oxide comprises the following steps:

[0038] 1. Place 5g of graphene oxide in a vacuum oven, and evacuate the oven at room temperature until the pressure inside the oven reaches 10,000Pa;

[0039] 2. Set the vacuum oven temperature and heating rate to 250°C and 10°C / min, respectively, to heat the graphene oxide;

[0040] 3. Keep the temperature of the oven for 1 hour to fully heat the graphene oxide;

[0041] 4. Stop heating, and after the temperature of the oven drops to room temperature, open the vacuum valve and collect the powder to obtain reduced graphene oxide.

Embodiment 3

[0043] The method for fast impurity-free reduction of graphene oxide comprises the following steps:

[0044] 1. Place 5g of graphene oxide in a vacuum oven, and evacuate the oven at room temperature until the pressure inside the oven reaches 5000Pa;

[0045] 2. Set the vacuum oven temperature and heating rate to 250°C and 10°C / min, respectively, to heat the graphene oxide;

[0046] 3. Keep the oven temperature for 0.5h to fully heat the graphene oxide;

[0047] 4. Stop heating, and after the temperature of the oven drops to room temperature, open the vacuum valve and collect the powder to obtain reduced graphene oxide.

[0048] Table 1 is the result of verifying the composition change of graphene oxide before and after the implementation of the present invention.

[0049] Table 1

[0050]

[0051] As can be seen from Table 1, comparing the measured data of the control group with the measured data of Examples 1 to 3, it can be concluded that the present invention can redu...

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PUM

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Abstract

The invention discloses a method for rapid impurity-free reduction of graphene oxide. The method comprises the following steps: step 1, placing graphene oxide in a vacuum oven, and vacuumizing the oven in a normal temperature environment; step 2, setting the temperature of the vacuum oven to be 150-300 DEG C, and heating the graphene oxide; step 3, keeping the temperature of the oven for 0.5-5 hours to fully heat the graphene oxide; and step 4, stopping heating, and after the temperature of the oven is reduced to room temperature, opening a vacuum valve and collecting powder to obtain reducedgraphene oxide.

Description

technical field [0001] The invention relates to the technical field related to graphene, and provides a fast, low energy consumption and impurity-free method for reducing graphene oxide. Background technique [0002] Graphene has excellent mechanical, electrical, optical, and thermal properties. In recent years, it has been widely used in the fields of materials, electronics, chemistry, energy, and biomedicine. The commonly used preparation methods of graphene include mechanical exfoliation method, chemical vapor deposition method, solid phase epitaxy growth method and chemical redox method. The graphene prepared by the first three methods has a relatively complete structure, but the preparation process is complicated and expensive; although the graphene sheets obtained by the chemical redox method have some defects, the production cost is low and the continuous production of the factory can be realized. , Large-scale production, in the actual application process, the graph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/19
CPCC01B32/19C01B2204/30
Inventor 段亚强张燕萍赵志国
Owner 上海利物盛纳米科技有限公司
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