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Graphene and method for preparing graphene by electrolyzing ethanol in ionic liquid

A technology of ionic liquid and graphene, which is applied in the field of graphene and the preparation of graphene by electrolysis of ethanol in ionic liquid, can solve the problems of complex preparation process, high cost, difficulty in controlling the degree of expansion, ultrasonic power and time, and meet the reaction conditions Simple, easy-to-control effects

Pending Publication Date: 2022-02-11
ANQING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Graphene is a new type of two-dimensional carbon nanomaterial with ultra-high electrical and thermal conductivity, huge theoretical specific surface area, extremely high Young's modulus and tensile strength, which has set off a worldwide trend in the preparation of graphene. With the upsurge of applied research, the methods for preparing graphene can be divided into two categories: bottom-up and top-down methods. The former has epitaxial growth method and chemical vapor deposition method, although graphite with complete crystal lattice and few defects can be obtained. Graphene, but the preparation process is complex and expensive, and cannot meet the needs of large-scale production. The top-down method for preparing graphene is low in cost and high in efficiency. The most commonly used methods are liquid phase exfoliation method and redox method. The redox method uses a strong oxidant , seriously destroys the structure and properties of graphene. The liquid phase exfoliation method is favored because of its simplicity, but it is difficult to control the expansion degree of graphite, ultrasonic power and time, etc., and it is difficult to prepare graphene on a large scale.

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  • Graphene and method for preparing graphene by electrolyzing ethanol in ionic liquid

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Effect test

Embodiment 1

[0038] A kind of preparation method of graphene, comprises the steps:

[0039] Take titanium-coated ruthenium inert electrode and platinum electrode, wash them in water at 40-100°C respectively, then ultrasonically clean them with organic solvents, activate them, and then dry them for later use;

[0040] To 100mL of 1-hexyl-3-methylhexafluorophosphate (referred to as HMImPF 6 ) into 8mL of 1-butyl-3-methylimidazole perfluorobutyl sulfonate ([Bmim][PFBS] for short), 2g of calcium oxide, stirred and ultrasonically mixed to obtain the anolyte; Add 20ml of absolute ethanol and mix to obtain solution 1;

[0041] Take a double-chamber electrolytic cell, the cathode chamber and the anode chamber are separated by an anion exchange membrane; place the above-mentioned double-chamber electrolytic cell in the heater, then place the titanium-coated ruthenium inert electrode in the cathode chamber, and the platinum electrode in the anode chamber, keeping The distance between the two elect...

Embodiment 2

[0046] A kind of preparation method of graphene, comprises the steps:

[0047] Take titanium-coated ruthenium inert electrode and platinum electrode, wash them in water at 40-100°C respectively, then ultrasonically clean them with organic solvents, activate them, and then dry them for later use;

[0048] Add 3 mL of 1-butyl-3-methylimidazolium perfluorobutyl sulfonate and 1 g of calcium oxide to 100 mL of 1-hexyl-3-methylhexafluorophosphate, stir and ultrasonically mix to obtain an anolyte; Then add 20ml absolute ethanol to the anolyte and mix to obtain solution 1;

[0049]Take the double-chamber electrolytic cell, the cathode chamber and the anode chamber are separated by an anion exchange membrane; place the above-mentioned double-chamber electrolyzer in the heater, then place the titanium-coated ruthenium inert electrode in the cathode chamber, and the platinum electrode in the anode chamber, keeping The distance between the two electrodes is 0.5cm, then pass argon gas to ...

Embodiment 3

[0052] A kind of preparation method of graphene, comprises the steps:

[0053] Take titanium-coated ruthenium inert electrode and platinum electrode, wash them in water at 40-100°C respectively, then ultrasonically clean them with organic solvents, activate them, and then dry them for later use;

[0054] Add 8 mL of 1-butyl-3-methylimidazolium perfluorobutyl sulfonate and 3 g of calcium oxide to 100 mL of 1-hexyl-3-methylhexafluorophosphate, stir and ultrasonically mix to obtain an anolyte; Then add 20ml absolute ethanol to the anolyte and mix to obtain solution 1;

[0055] Take the double-chamber electrolytic cell, the cathode chamber and the anode chamber are separated by an anion exchange membrane; place the above-mentioned double-chamber electrolyzer in the heater, then place the titanium-coated ruthenium inert electrode in the cathode chamber, and the platinum electrode in the anode chamber, keeping The distance between the two electrodes is 1.5cm, then pass argon to the...

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Abstract

The invention discloses a method for preparing graphene by electrolyzing ethanol in ionic liquid, which comprises the following steps: ethanol is added into an anolyte, electrolysis is carried out to obtain graphene, wherein the anolyte is a mixture of ionic liquid and calcium oxide, and a catholyte is ionic liquid. The invention further discloses the graphene which is prepared according to the method for preparing the graphene by electrolyzing the ethanol in the ionic liquid. According to the method, proper types of ionic liquid are selected to be matched with a platinum electrode to perform dual catalysis, ethanol is electrolyzed to prepare graphene under the action of proper temperature and pulsed electric field, and the method is simple to operate, mild in condition and easy to control.

Description

technical field [0001] The invention relates to the technical field of graphene, in particular to a graphene and a method for preparing graphene by electrolyzing ethanol in an ionic liquid. Background technique [0002] Graphene is a new type of two-dimensional carbon nanomaterial with ultra-high electrical and thermal conductivity, huge theoretical specific surface area, extremely high Young's modulus and tensile strength, which has set off a worldwide trend in the preparation of graphene. With the upsurge of applied research, the methods for preparing graphene can be divided into two categories: bottom-up and top-down methods. The former has epitaxial growth method and chemical vapor deposition method, although graphite with complete crystal lattice and few defects can be obtained. Graphene, but the preparation process is complex and expensive, and cannot meet the needs of large-scale production. The top-down method for preparing graphene is low in cost and high in efficie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/135C25B1/50C25B9/23C25B11/042
CPCC25B1/135C25B1/50C25B9/23C25B11/042
Inventor 杜荣斌刘涛方安玥吴夏王羽
Owner ANQING NORMAL UNIV