Quick heating method for graphene and deep processing method based on same

A rapid heating and graphene technology, applied in the direction of graphene, chemical instruments and methods, sustainable manufacturing/processing, etc., to achieve the effect of improving energy utilization and short production cycle

Active Publication Date: 2017-03-22
杭州阳名新能源设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no such technical report in China at present, especially based on large-scale, fast, and l

Method used

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  • Quick heating method for graphene and deep processing method based on same
  • Quick heating method for graphene and deep processing method based on same
  • Quick heating method for graphene and deep processing method based on same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Get 60mg thermally exfoliated graphene as raw material, such as figure 1 As shown, a microwave oven is used in the air to act on the sample, the microwave power is set to 700w, and the heating time is 1 minute to prepare porous graphene. The transmission electron microscope pictures of the raw materials used are as follows: figure 1 As shown, there are no holes on the surface of graphene nanosheets; the transmission electron microscope photos of the prepared porous graphene are as follows figure 2 As shown, the graphene surface is punched with holes about 20nm in size.

Embodiment 2

[0043] Using the same raw material and process as in Example 1, the heating time was increased to 10min to prepare porous graphene. The transmission electron microscope photographs of the prepared porous graphene are as follows: image 3 As shown, the graphene surface is punched with holes of 100nm in size.

Embodiment 3

[0045] Take 50 mg of graphene oxide as raw material, and heat it for 2 seconds with a 1kw infrared lamp in the air for deoxygenation and purification. The comparison sample was before infrared action ( Figure 5 ) and after infrared ( Figure 6 ) of the Fourier transform infrared spectrum, it can be found that the 1730cm in the raw material -1 Stretching vibration absorption peak of nearby C=O double bond, 1620cm -1 The vibrational absorption peak of the nearby O-H bond, 1217cm -1 The vibrational absorption peak of the nearby C-OH bond and the 1043cm -1 The vibrational absorption peaks of nearby C-O-C bonds are obviously weakened or disappeared. Simultaneous XPS analysis ( Figure 7 ) also showed that the oxygen content of the sample decreased significantly after infrared treatment. These data indicate that oxygen-containing groups were effectively removed for purification purposes.

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PUM

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Abstract

The invention discloses a quick heating method for graphene and a deep processing method based on the same. In the heating method, by means of infrared, microwave/lightwave, laser and plasma energy, graphene starts to be heated from the inside and rises to a high temperature within a short time; and meanwhile, by regulating the reaction atmosphere, the reaction on a graphene lamella is controlled so as to perform deep processing on the graphene, wherein the deep processing type comprises graphene purification, perforation or doping. Compared with a traditional tube furnace, the quick heating manner such as infrared, microwave, lightwave, laser, plasma and the like in the invention can greatly save energy and improve energy utilization efficiency.

Description

technical field [0001] The invention belongs to the field of new carbon materials, and relates to the preparation of new carbon materials, in particular to a rapid heating method for graphene of new carbon materials and a deep processing method based thereon. Background technique [0002] Graphene is a two-dimensional nanomaterial with a single atomic layer thickness composed of carbon atoms through SP2 hybridization. It has many excellent properties, such as high specific surface area, electrical conductivity, thermal conductivity, and strong mechanical properties and excellent stability. sex. Therefore, graphene has potential applications in many fields, such as heavy-duty anti-corrosion paints, highly conductive inks, heat-conducting films, electromagnetic shielding, and wave-absorbing coatings, especially in the field of electrochemical energy storage in recent years. [0003] However, there is a problem that is often overlooked in the application of graphene in electro...

Claims

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Application Information

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IPC IPC(8): C01B32/194C01B32/196
CPCC01B2204/30C01P2004/04C01P2002/82Y02P20/10
Inventor 韩晓刚沈飞成永红轩莹莹张凡孙周婷
Owner 杭州阳名新能源设备科技有限公司
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