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Method for preparing graphene efficiently

A graphene and high-efficiency technology, applied in the field of graphene, can solve the problems of low efficiency, pollute the environment, and high cost, and achieve the effects of wide sources, low environmental pollution, and high production efficiency

Inactive Publication Date: 2013-04-24
HUAQIAO UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing graphene with high efficiency, a large amount and low cost, so as to solve the problems of high cost, low efficiency and environmental pollution in the prior art

Method used

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  • Method for preparing graphene efficiently

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Experimental program
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Effect test

Embodiment 1

[0034] A method for efficiently preparing graphene is realized through the following steps:

[0035] (1) Weigh 4g of expanded graphite and 40g of potassium nitrate, the mass ratio of potassium nitrate to expanded graphite is 10:1;

[0036] (2) Add potassium nitrate and expanded graphite into a beaker with 80 mL of distilled water, heat and mix evenly until the potassium nitrate is completely dissolved, then place the beaker in a drying oven until all the water evaporates to obtain a mixture of expanded graphite and potassium nitrate, and then Put the mixture of expanded graphite and potassium nitrate into a ball mill jar with a volume of 1000mL, and add zirconium balls according to the ball-to-material mass ratio of 25:1;

[0037] (3) Then install the ball milling jar on the stirring ball mill, mill at a speed of 70 rpm for 2 hours, and pour out the ball milling product and zirconium balls from the ball milling jar;

[0038] (4) Rinse the ball milled product and zirconium bal...

Embodiment 2

[0040] A method for efficiently preparing graphene is realized through the following steps:

[0041] (1) Weigh 2g of expanded graphite, weigh 40g of potassium chloride, and the mass ratio of potassium chloride to expanded graphite is 20:1;

[0042] (2) Add potassium chloride and expanded graphite into a beaker with 100mL of distilled water, heat and mix evenly until potassium chloride is completely dissolved, and then place the beaker in a drying oven until all the water evaporates to obtain a mixture of expanded graphite and potassium chloride. mixture, then the mixture of expanded graphite and potassium chloride is put into a ball mill jar with a volume of 1000mL, and zirconium balls are added according to the ball-to-material mass ratio of 25:1;

[0043] (3) Then install the ball mill jar on the stirring ball mill, mill at a speed of 70 rpm for 3 hours, and pour out the ball mill product and zirconium balls from the ball mill jar;

[0044] (4) Rinse the ball milled product...

Embodiment 3

[0046] A method for efficiently preparing graphene is realized through the following steps:

[0047] (1) Weigh 1.5g of expanded graphite, weigh 45g of sodium sulfate, and the mass ratio of sodium sulfate to expanded graphite is 30:1;

[0048] (2) Add sodium sulfate and expanded graphite into a beaker with 120mL of distilled water, heat and mix evenly until the sodium sulfate is completely dissolved, then place the beaker in a drying oven until all the water evaporates to obtain a mixture of expanded graphite and sodium sulfate, and then Put the mixture of expanded graphite and sodium sulfate into a ball mill jar with a volume of 1000mL, and add zirconium balls according to the mass ratio of balls to materials of 50:1;

[0049] (3) Then install the ball mill jar on the stirring ball mill, mill at a speed of 70 rpm for 8 hours, and pour out the ball mill product and zirconium balls from the ball mill jar;

[0050] (4) Rinse the ball milled product and zirconium balls poured out i...

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Abstract

The invention discloses a method for preparing graphene efficiently. The method comprises the following steps: (1) respectively weighing soluble inorganic salt and / or soluble organic matter and expanded graphite for later use according to the mass ratio of the soluble inorganic salt and / or the soluble organic matter to the expanded graphite of 10:1 to 200:1, wherein the expanded graphite serves as a raw material; (2) adding the soluble inorganic salt and / or the soluble organic matter and the expanded graphite into distilled water, heating, mixing uniformly until the soluble inorganic salt and / or the soluble organic matter are dissolved completely, placing into a drying box until the water is volatilized completely to obtain the mixture of the expanded graphite and the inorganic salt and / or the organic matter, placing the mixture into a ball-milling tank and performing ball milling; and (3) separating ball-milling products, washing with distilled water for 3 to 5 times, performing suction filtration and drying to obtain the graphene. The graphene is prepared according to the physical method. The method is simple and practical, has no specific requirement on equipment, is low in cost, high in efficiency, pollution-free and easy to popularize and use, and solves the problems of high cost, low efficiency, low quality and the like in the conventional preparation technology for the graphene.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a method for efficiently preparing graphene. Background technique [0002] Graphite is a two-dimensional nano-filled material with broad application prospects, especially single-layer or few-layer graphene has a very superior electron transfer ability. [0003] Graphene, a single-atom-thick two-dimensional crystal composed of SP2 carbon atoms, has attracted widespread attention because of its outstanding electronic, mechanical and thermal properties and its huge application potential. The existing graphene preparation methods are mainly divided into two types: mechanical exfoliation method and chemical method. Mechanical methods mainly include tape method, ultrasonic method and ball milling method; chemical methods are surface epitaxial growth method, graphite oxide reduction method and chemical vapor deposition method. [0004] At present, the graphite oxide reduction method ...

Claims

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Application Information

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IPC IPC(8): C01B31/04C01B32/19
Inventor 陈国华龙江赵立平
Owner HUAQIAO UNIVERSITY
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