Making method for hypersensitive graphene electrode

A graphene electrode and graphene technology, applied in the direction of material electrochemical variables, can solve the problems of inability to achieve accurate detection of mixed purine components, unstable performance of graphene electrodes, and large amount of materials, so as to achieve good surface contact and low cost. The effect of low cost and simple process

Inactive Publication Date: 2015-05-27
JIAMUSI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to understand that when the prior art detects mixed purines, serious interference will be generated, and accurate detection of mixed purine components cannot be realized, and the existing methods for preparing graphene electrodes are complicated in process, and the amount of materials used is large. In order to solve the problem of unstable performance of graphene electrodes, an ultra-sensitive graphene electrode and its preparation method are provided

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  • Making method for hypersensitive graphene electrode
  • Making method for hypersensitive graphene electrode

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specific Embodiment approach 1

[0019] Embodiment one: a kind of ultra-sensitive graphene electrode of the present embodiment, it is characterized in that it is to be coated on the surface of glassy carbon electrode by the mixed solution of graphene oxide solution and ionic liquid, after being heated and baked by infrared lamp, cooling to room temperature, then perform cyclic voltammetry on the electrode cooled to room temperature in polymerizable monomer / sulfuric acid solution, and then process it in a low-temperature plasma atmosphere after drying; the graphene oxide solution is made of graphite oxide Graphene oxide and solvent are mixed, and the volume ratio of the mass of described graphene oxide to solvent is 1mg:(1mL-3.3mL), the volume ratio of graphene oxide solution and ionic liquid is 1mL:(0.8μL-6μL).

specific Embodiment approach 2

[0020] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the graphene oxide is a single-layer graphene oxide or an oligolayer graphene oxide, and the oligolayer in the oligolayer graphene oxide is 4- 12 layers; wherein the solvent is water or dimethylamide, and the solubility of the solution is above 1.0 mg / mL. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0021] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the ionic liquid is 1-ethyl-3-methylimidazolium hexafluorophosphate, 1-butyl-3-methyl Imidazolium hexafluorophosphate, 1-hexyl-3-methylimidazolium hexafluorophosphate, 1-octyl-3-methylimidazolium hexafluorophosphate, O-benzotriazole-N,N, N',N'-tetramethyluronium hexafluorophosphate, O-(1H-6-chlorobenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluoro One of phosphate and 1-(chloro-1-pyrrolidinylmethylene) pyrrolidinium hexafluorophosphate or a mixture of several of them mixed in any ratio. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a making method of a graphene electrode, and especially relates to a making method of a hypersensitive graphene electrode. The problems of unrealized mixed purine ingredient detection, complex preparation technology, much material consumption and unstable electrode performance in the prior art are solved in the invention. The making method comprises the following steps: 1, dissolving graphene oxide in a solvent, adding an ionic liquid, and uniformly mixing to obtain a mixed liquid; 2, dispensing the mixed liquid on the surface of the glassy carbon electrode, carrying out heating baking under an infrared lamp, and cooling to room temperature; 3, carrying out cyclic voltammetry of the cooled electrode in a polymerizable monomer / sulfuric acid solution, taking out, and drying; and 4, processing the dried electrode in the plasma atmosphere, and allowing the obtained electrode to stand at room temperature to obtain the hypersensitive graphene electrode. The hypersensitive graphene electrode can be used in the biological electrochemical analysis field.

Description

technical field [0001] The invention relates to a preparation method of a graphene electrode. Background technique [0002] Graphene is a two-dimensional crystal composed of closely packed carbon atoms. It is the basic unit of carbon allotropes including fullerenes, carbon nanotubes, and graphite, that is, a single-layer sheet of graphite. The electrons in graphene have no mass, and the movement speed of electrons exceeds that in other metal monomers or semiconductors, which can reach 1 / 300 of the speed of light. Because of this, graphene has super conductivity. In addition, since the thickness of graphene is only one carbon atom thick, that is, 0.335 nanometers, the specific surface area of ​​an ideal single-layer graphene can reach 2630m 2 / g, while the specific surface area of ​​ordinary activated carbon is 1500m 2 / g, the super large specific surface area makes graphene a surface material with great potential activity. It is the material with the highest strength, the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/30C04B41/52
Inventor 武冬梅柴东凤宋朝宇刘红侯铁军徐国标高广刚
Owner JIAMUSI UNIVERSITY
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