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Preparation method of graphene intercalation compound

A graphite intercalation and compound technology, which is applied in the field of preparation of graphene intercalation compounds, can solve problems that are difficult to apply in the field of microelectronic device manufacturing, and achieve the effect of low equipment requirements and simple steps

Inactive Publication Date: 2019-03-08
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional graphite intercalation compounds are difficult to apply in

Method used

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  • Preparation method of graphene intercalation compound
  • Preparation method of graphene intercalation compound
  • Preparation method of graphene intercalation compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Mix 300mg of anhydrous ferric chloride and 60mg of expanded graphite evenly, vacuumize, seal in a 50mL glass bottle, and heat at 400°C for 4h to prepare a pure second-order graphite intercalation compound.

[0024] (2) Dissolve the graphite intercalation compound in dilute hydrochloric acid solution, filter and dry with suction.

[0025] (3) The graphite intercalation compound was added into a mixed solution of 20 mL of concentrated sulfuric acid and 10 mL of concentrated nitric acid, and stirred in ice water (0° C.) for 0.5 hours.

[0026] (4) 360 mg of sodium chlorate was put into the solution, stirred at room temperature for 12 hours, and the product was centrifuged and washed.

[0027] (5) The product was added into an aqueous solution, and ultrasonicated for 1 h to obtain a graphene intercalation compound.

Embodiment 2

[0029] (1) Mix 300mg of anhydrous ferric chloride and 60mg of expanded graphite evenly, vacuumize, seal in a 50mL glass bottle, and heat at 400°C for 6h to prepare a pure second-order graphite intercalation compound.

[0030] (2) Dissolve the graphite intercalation compound in dilute hydrochloric acid solution, filter and dry with suction.

[0031] (3) The graphite intercalation compound was added into a mixed solution of 20 mL of concentrated sulfuric acid and 10 mL of concentrated nitric acid, and stirred in ice water (0° C.) for 0.5 hours.

[0032] (4) 360 mg of sodium chlorate was put into the solution, stirred at room temperature for 12 hours, and the product was centrifuged and washed.

[0033] (5) The product was added into an aqueous solution, and ultrasonicated for 1 h to obtain a graphene intercalation compound.

Embodiment 3

[0035] (1) Mix 300mg of anhydrous ferric chloride and 60mg of expanded graphite evenly, vacuumize, seal in a 50mL glass bottle, and heat at 400°C for 4h to prepare a pure second-order graphite intercalation compound.

[0036] (2) Dissolve the graphite intercalation compound in dilute hydrochloric acid solution, filter and dry with suction.

[0037] (3) Add the graphite intercalation compound into 40 mL of concentrated sulfuric acid solution, and stir in ice water (0° C.) for 0.5 hour.

[0038] (4) Put 360 mg of potassium permanganate into the solution, stir at room temperature for 12 hours, and centrifuge the product.

[0039] (5) The product was added into an aqueous solution, and ultrasonicated for 1 h to obtain a graphene intercalation compound.

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Abstract

The invention provides a preparation method of a graphene intercalation compound. The preparation method comprises the following steps: preparing a second-order graphite intercalation compound is by mixing and heating anhydrous ferric chloride and graphite by using a molten salt method, performing oxidation intercalation on the second-order graphite intercalation compound by using an oxidizing agent and concentrated acid to obtain a product, centrifuging and washing the product, and adding into water for ultrasonic dispersion to obtain a graphene intercalation compound material. The method disclosed by the invention can be used for preparing the graphene intercalation compound which can be dispersed in common solvents on large scale, and is conveniently applied in the manufacturing field of microelectronic devices; and the steps used are easy, requirements on devices are low, and the method is suitable for industrial or lab operation.

Description

technical field [0001] The invention relates to the field of preparation of graphene intercalation compounds, in particular to a method for preparing dispersible bilayer graphene intercalation compounds by exfoliating graphite intercalation compounds. Background technique [0002] Graphite intercalation compound is a composite material in which different atoms or molecules are inserted between graphite layers to form a new intercalation layer. The existence of the intercalation agent increases the distance between graphite layers, and different intercalation agents also allow the free carriers of the graphite layer to migrate, thereby obtaining compounds with different electrical, thermal, and magnetic properties. Graphite is an interlayer compound made by chemical treatment. Its properties are much better than graphite. It has excellent properties or functions such as high temperature resistance, thermal shock resistance, oxidation resistance, corrosion resistance, lubricit...

Claims

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Application Information

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IPC IPC(8): C01B32/194
CPCC01B32/194
Inventor 苗中正田华雨苗中明
Owner YANCHENG TEACHERS UNIV
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