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Preparation method of graphene and graphene

A graphene, graphene solution technology, applied in graphene, nano carbon and other directions, can solve the problems of high toxicity of reducing agent and easy agglomeration of products, and achieve the effect of improving preparation efficiency and performance, not easy to agglomerate, and preventing agglomeration

Active Publication Date: 2017-08-11
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is to overcome the deficiencies of the prior art, especially for the deficiencies such as the high toxicity of the reducing agent and the easy reunion of the product, to provide a safe and environmentally friendly, simple and easy, mild reaction condition for the preparation of graphene and not easy to reunite Graphene

Method used

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Experimental program
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Effect test

Embodiment 1

[0032] A method for preparing graphene of the present invention mainly uses polymethylhydrosilane (PMS) as a reducing agent to reduce graphene oxide to obtain graphene.

[0033] Specific steps are as follows:

[0034] (1) Ultrasonic disperse 10 mg of graphene oxide in 100 mL of dichloromethane at 20°C to obtain a 0.1 g / L graphene oxide suspension. Dissolve 100 mg of polymethylhydrogensilane in 100 mL of dichloromethane at room temperature to obtain a 1 g / L polymethylhydrogensilane solution.

[0035] (2) Mix the graphene oxide suspension obtained in step (1) with a polymethylhydrosilane (PMS) solution, and the mass ratio of graphene oxide in the mixed solution to polymethylhydrosilane (PMS) is 1: 10. Add 1 mg of chloroplatinic acid to the mixture, and stir at room temperature for 12 hours to obtain a graphene solution.

[0036] (3) After centrifuging the above graphene solution, discard the supernatant, then wash the residual solvent on the precipitate with n-hexane, and then...

Embodiment 2

[0039] A method for preparing graphene of the present invention mainly uses polyphenylhydrosilane as a reducing agent to reduce graphene oxide to obtain graphene.

[0040] Specific steps are as follows:

[0041] (1) Ultrasonic disperse 100mg of graphene oxide in 100mL of dichloromethane at 20°C to obtain a 1g / L graphene oxide suspension. 100 mg of polyphenylhydrosilane was dissolved in 100 mL of dichloromethane at room temperature to obtain a 1 g / L polyphenylhydrosilane solution.

[0042] (2) Mix the graphene oxide suspension obtained in step (1) with the polyphenylhydrosilane solution, the mass ratio of graphene oxide and polyphenylhydrosilane in the mixed solution is 1:1, in the mixed solution Add 1mg of chloroplatinic acid and stir at room temperature for 72h to obtain a graphene solution.

[0043] (3) After centrifuging the above graphene solution, discard the supernatant, then wash the residual solvent on the precipitate with n-hexane, and then wash away the polyphenyle...

Embodiment 3

[0045] A method for preparing graphene of the present invention mainly uses polyphenylhydrosilane as a reducing agent to reduce graphene oxide to obtain graphene.

[0046] Specific steps are as follows:

[0047] (1) Ultrasonic disperse 100mg of graphene oxide in 100mL of dichloromethane at 20°C to obtain a 1g / L graphene oxide suspension. Dissolve 1 g of polymethylsilane in 100 mL of dichloromethane at room temperature to obtain a 10 g / L polymethylsilane solution.

[0048] (2) Mix the graphene oxide suspension obtained in step (1) with the polymethylsilane solution, the mass ratio of graphene oxide and polymethylsilane in the mixture is 1:10, add 1mg Chloroplatinic acid, stirred at room temperature for 24h to obtain a graphene solution.

[0049](3) After centrifuging the above graphene solution, discard the supernatant, then wash the residual solvent on the precipitate with n-hexane, and then wash away the polyformaldehyde grafted on the graphene surface with 0.1mol / L hydrofl...

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Abstract

The invention discloses a preparation method of graphene and the graphene. According to the preparation method of the graphene, graphene oxide is reduced by hydrogen-containing polysilane serving as a reducer, and the graphene is obtained. According to the preparation method, hydrazine hydrate, a derivative of hydrazine hydrate, hydrogen iodide, sodium borohydride and other substances with strong toxicity, high volatility and strong corrosion are avoided, and the method is safe and environment-friendly, requires mild conditions and can be used for batch production.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a graphene preparation method and graphene. Background technique [0002] Graphene consists of monolayer sp 2 Composed of hybrid carbon atoms, it is the thinnest and hardest nanomaterial known. It is almost completely transparent, light and has good flexibility and super electrical and thermal conductivity. It is used in supercapacitors, transparent electrodes, and seawater. Desalination, light-emitting diodes, sensors, hydrogen storage, solar cells, catalyst supports, composite materials, bio-scaffold materials, drug delivery and other fields have a wide range of applications. [0003] The reported graphene preparation methods include mechanical exfoliation, epitaxial growth, vapor deposition, arc, electrochemical, organic synthesis, and chemical reduction. Among them, the chemical reduction method is used to prepare graphene by reducing the oxidiz...

Claims

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Application Information

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IPC IPC(8): C01B32/184
CPCC01P2002/72
Inventor 胡天娇浦文婧尹传明李公义李效东王建方
Owner NAT UNIV OF DEFENSE TECH
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