Preparation method of small-size graphene

A graphene, small-scale technology, applied in graphene, chemical instruments and methods, nano-carbon and other directions, can solve problems such as high energy consumption, environmental pollution, restrictions, etc., achieve low energy consumption, simple raw material requirements, and small forming size. Effect

Active Publication Date: 2021-07-23
哈尔滨金纳科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The acid used in the method comprises concentrated sulfuric acid, and the oxidizing agent includes potassium permanganate, sodium permanganate, lithium permanganate, potassium manganate, potassium ferrate, sodium ferrate, sodium periodate, sodium dichromate, One or more of potassium perchlorate, potassium chlorate, sodium hypochlorite, potassium perborate, chromium trioxide and ammonium persulfate have serious environmental pollution and safety problems, and the purification method is high-temperature melting purification, which consumes a lot of energy. These limitations promotion of its mass production

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Embodiment 1

[0043] Embodiment 1: the preparation method of a kind of small-scale graphene of the present embodiment comprises the following steps:

[0044] Step 1: Add copper chloride, potassium salt mixture and compound additives into water to prepare a plating solution, and then set the pH value at 8.0±0.5, the temperature of the plating solution at 45°C, and the current density at 3A / dm 2 1. Under the condition that ultrasonic power is 120W and ultrasonic frequency is 45KHz, copper rod is used as anode, and aluminum film silica sheet is used as cathode to carry out copper plating to obtain substrate; the concentration of copper chloride in the plating solution is 15g / L , the concentration of the potassium salt mixture is 45g / L, and the concentration of the compound additive is 10g / L; the potassium salt mixture is a mixture of potassium citrate and boric acid in a mass ratio of 1.5:1; the compound additive is Hydrates of Mo, in the hydrates of Mo (NH 4 ) 6 Mo 7 o 24 4H 2 The mass f...

Embodiment 2

[0048] Embodiment 2: the preparation method of a kind of small-scale graphene of the present embodiment comprises the following steps:

[0049] Step 1: Add copper chloride, potassium salt mixture and compound additives into water to prepare a plating solution, and then set the pH value at 8.0±0.5, the temperature of the plating solution at 45°C, and the current density at 3A / dm 2 1. Under the condition that ultrasonic power is 120W and ultrasonic frequency is 45KHz, copper rod is used as anode, and aluminum film silica sheet is used as cathode to carry out copper plating to obtain substrate; the concentration of copper chloride in the plating solution is 15g / L , the concentration of the potassium salt mixture is 45g / L, and the concentration of the compound additive is 10g / L; the potassium salt mixture is a mixture of potassium citrate and boric acid in a mass ratio of 1.5:1; the compound additive is Hydrates of Mo, in the hydrates of Mo (NH 4 ) 6 Mo 7 o 24 4H 2 The mass f...

Embodiment 3

[0053] Embodiment 3: the preparation method of a kind of small-scale graphene of the present embodiment comprises the following steps:

[0054] Step 1: Add copper chloride, potassium salt mixture and compound additives into water to prepare a plating solution, and then set the pH value at 8.0±0.5, the temperature of the plating solution at 45°C, and the current density at 3A / dm 2 1. Under the condition that ultrasonic power is 120W and ultrasonic frequency is 45KHz, copper rod is used as anode, and aluminum film silica sheet is used as cathode to carry out copper plating to obtain substrate; the concentration of copper chloride in the plating solution is 15g / L , the concentration of the potassium salt mixture is 45g / L, and the concentration of the compound additive is 10g / L; the potassium salt mixture is a mixture of potassium citrate and boric acid in a mass ratio of 1.5:1; the compound additive is Hydrates of Mo, in the hydrates of Mo (NH 4 ) 6 Mo 7 o 24 4H 2 The mass f...

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Abstract

The invention relates to a preparation method of small-size graphene. The invention belongs to the technical field of preparation of carbon nanomaterials. The invention provides a preparation method of small-size graphene. The preparation method comprises the following steps: 1, plating copper on an aluminum film silicon dioxide thin plate through an electroplating method to manufacture a substrate; 2, putting the substrate into a reaction chamber for preheating under the protection of inert gas; 3, introducing inert gas and a mixture of a carbon-containing organic gaseous substance for carbonization treatment; and 4, taking out the substrate, treating the substrate in a mixed acid solution, washing the substrate to be neutral, filtering, and drying to obtain the small-size graphene. The method can be used for preparing the small-size graphene with the advantages of high purity, small size, uniform distribution, good controllability and the like. The method has the advantages of low energy consumption, environment-friendly raw materials and low price. The small-size graphene is a transparent film in appearance, small-size graphene in microstructure, 50-200nm in transverse size and 92% or more in carbon content.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterial preparation, and in particular relates to a preparation method of small-sized graphene. Background technique [0002] Carbon is one of the most abundant elements in nature. Carbon atoms can form complex cross-linked network structures, which are essential for organic chemistry and the existence of life. Carbon material is a special material that can exist in nature in the form of zero-dimensional to three-dimensional. In addition, carbon allotropes have different physical and chemical properties. From superhard material diamond to soft material graphite, from insulating material diamond to semiconductor material graphite to conductive material graphene, allotropes of carbon play important roles. Although carbon allotropes have different structures and properties, there is a magical two-dimensional carbon allotrope that occupies a unique and special position in the field of materials,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/186B82Y40/00
CPCC01B32/186B82Y40/00C01B2204/32
Inventor 何斌张超刘强李朋
Owner 哈尔滨金纳科技有限公司
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