Method for preparing graphene aqueous solution by using water soluble coronene derivative as solubilizer

A graphene solution, alkene aqueous solution technology, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve problems such as limited application and application effect, graphene structure damage, low product concentration, etc., to improve electrical properties. , stable nature, simple operation effect

Active Publication Date: 2012-01-04
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] So far, the method of preparing graphene aqueous solution by reducing graphene oxide still has the disadvantages of low product concentration and uneven dispersion. For the method of using covalent modification, there are also problems such as the destruction of the graphene structure, which limits its application in the field. Applications and application effects in various fields

Method used

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  • Method for preparing graphene aqueous solution by using water soluble coronene derivative as solubilizer
  • Method for preparing graphene aqueous solution by using water soluble coronene derivative as solubilizer
  • Method for preparing graphene aqueous solution by using water soluble coronene derivative as solubilizer

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Embodiment 1

[0040] A method for preparing an aqueous graphene solution using a water-soluble hexabenzocoronene derivative (1) as a solubilizer, wherein the structure of the water-soluble hexabenzocoronene derivative (1) is as follows:

[0041]

[0042] Include the following steps:

[0043] 1. Under the condition of 10°C, put 1mg of graphene oxide solid in 10ml of ultrapure water, and ultrasonically disperse for 10 minutes to obtain the following: figure 2 The stable brown-yellow solution shown in A;

[0044] 2. Add 4 mg of water-soluble hexabenzocoronene derivative (1) to the solution obtained in step 1, and mix thoroughly;

[0045] 3. Add 50 μl of hydrazine hydrate to the solution obtained in step 2, and stir at 60° C. for 5 hours to obtain a graphene solution;

[0046] 4. Centrifuge the graphene solution obtained in step 3 at 5000 rpm for 30 minutes, remove excess free water-soluble hexabenzocoronene derivative molecule (1) and remaining hydrazine hydrate in the supernatant, and c...

Embodiment 2

[0049] A method for preparing an aqueous graphene solution using a water-soluble hexabenzocoronene derivative (2) as a solubilizer, wherein the structural formula of the water-soluble hexabenzocoronene derivative (2) is as follows:

[0050]

[0051] Include the following steps:

[0052] 1. At 20°C, put 1 mg of graphene oxide solid in 10 ml of ultrapure water and disperse it ultrasonically for 20 minutes to obtain a stable brown-yellow solution;

[0053] 2. Add 30 mg of water-soluble hexabenzocoronene derivative (2) to the solution obtained in step 1, and mix thoroughly;

[0054] 3. Add 80 μl of hydrazine hydrate to the solution obtained in step 2, and stir at 70° C. for 9 hours to obtain a graphene solution;

[0055] 4. Centrifuge the graphene solution obtained in step 3 for 1 hour at 7000 rpm, remove excess free water-soluble hexabenzocoronene derivative molecule (2) and remaining hydrazine hydrate in the supernatant, and centrifuge The obtained solid was dissolved in ul...

Embodiment 3

[0058] A method for preparing an aqueous graphene solution using a water-soluble hexabenzocoronene derivative (3) as a solubilizer, wherein the structural formula of the water-soluble hexabenzocoronene derivative (3) is as follows:

[0059]

[0060] Include the following steps:

[0061] 1. At 20°C, put 1 mg of graphene oxide solid in 10 ml of ultrapure water and disperse it ultrasonically for 20 minutes to obtain a stable brown-yellow solution;

[0062] 2. Add 30 mg of water-soluble hexabenzocoronene derivative (3) to the solution obtained in step 1, and mix thoroughly;

[0063] 3. Add 80 μl of hydrazine hydrate to the solution obtained in step 2, and stir at 70° C. for 9 hours to obtain a graphene solution;

[0064] 4. Centrifuge the graphene solution obtained in step 3 for 1 hour at 7000 rpm, remove excess free water-soluble hexabenzocoronene derivative molecule (3) and remaining hydrazine hydrate in the supernatant, and centrifuge The obtained solid was dissolved in ul...

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Abstract

The invention discloses a method for preparing graphene aqueous solution by using a water soluble coronene derivative as a solubilizer, which comprises: dispersing graphene solid in ultrapure water, adding the water soluble coronene derivative, mixing, adding hydrazine hydrate, stirring, centrifuging, removing supernate, dissolving precipitate in ultrapure water, and thus, obtaining graphene aqueous solution. In the invention, the operation is simple, the property of the prepared graphene aqueous solution is stable, the dispersion state of the graphene in water can be regulated by changing the used amount of solubilizer, and the method has a bright application prospect in nano science, biomedicine and material science.

Description

technical field [0001] The invention relates to a method for preparing an aqueous solution of graphene, in particular to a method for preparing an aqueous solution of graphene by using a water-soluble hexabenzocoronene derivative as a solubilizer, and belongs to the technical field of organic and inorganic materials. Background technique [0002] In 2004, single-layer graphene was discovered for the first time. It is a two-dimensional nanomaterial with a thickness of only one carbon atom. 2 The planar film of the honeycomb lattice composed of hybrid orbitals has a thickness of only 0.35nm, which is the thinnest two-dimensional material in the world. Graphene has attracted more and more attention because of its various excellent physical properties brought about by its special single atomic layer structure. [0003] Graphene with a complete structure has high chemical stability, and its interaction with other solvents is relatively weak. It is easy to aggregate between graph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B01F17/32B01F17/18B01F17/00B01F17/12B01F17/04B01F17/42C09K23/00C09K23/04C09K23/12C09K23/18C09K23/32C09K23/42
Inventor 李嫕魏恒星陈金平曾毅李迎迎
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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