Method for preparation of nano carbon fiber plate electrode

A technology of nano-carbon fiber and disk electrode, which is applied in the direction of material electrochemical variables, etc., and can solve problems such as complicated operation, difficulty, and complicated process

Inactive Publication Date: 2007-08-08
WUHAN UNIV
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Problems solved by technology

Obviously, carbon nanofiber disk electrodes combine the advantages of nanodisk electrodes and carbon fiber electrodes, but it is not easy to prepare nanoscale carbon fiber disk electrodes at present.
First of all, there is no commercialized nano-carbon fiber; usually, the electrochemical etching method is used to obtain a nano-scale carbon fiber cone, which is relatively complicated to operate and

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  • Method for preparation of nano carbon fiber plate electrode
  • Method for preparation of nano carbon fiber plate electrode

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Embodiment Construction

[0019] The electrode structure of the carbon nanofiber disc is shown in Figure 1. The specific preparation steps are as follows: a carbon fiber with a diameter of about 7 μm is ultrasonically cleaned with acetone, absolute ethanol, and ultrapure water for 3 to 5 minutes, and then cleaned with a large amount of ultrapure water after taking it out. Rinse with water; then dry the cleaned carbon fibers in a vacuum oven at 50°C for 10 hours for later use. A section of carbon fiber 1 with a length of about 2 to 3 cm is bonded together with silver glue 2 and metal wire 3 (in the present invention, as long as it is a metal with good electrical conductivity, it can be used as a metal wire, and copper wire and silver wire are commonly used. ), the metal wire used in the present embodiment is a copper wire, after the two are bonded, they penetrate from one end of the capillary 5, i.e. the rear end, and pass through 0.5~1cm from the other end, i.e. the front end. The section of carbon fib...

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Abstract

The invention provides a nanometer carbon fiber electrode preparation method, and firstly the method uses the carbon fiber with diameter of not more than 10mum attached with the silver glue and metal thread to pass the capillary, and piercing a segment from the capillary; then, putting the carbon fiber tip piercing from the capillary on the flame to etching to nanometer scale; then, withdrawing the carbon fiber tip into the capillary; in capillary, injecting epoxy resin, making the carbon fiber electrode from the nanometer tip to the link part of carbon fiber and metal thread buried and sealed by epoxy resin; and finally, after epoxy resin solidifying, carefully polishing the front-end of capillary to expose the nanometer tip of carbon fiber, and obtaining nanometer carbon fiber electrode. The invention method is simple, low cost, and the prepared nanometer carbon fiber micro-electrode has the advantages of tightly sealed, easy to update disk electrode surface, strong shaking resistance, and so on.

Description

technical field [0001] The invention relates to a method for preparing a nano-carbon fiber disk electrode, and belongs to the technical fields of electrochemistry, analytical chemistry, electroanalytical chemistry and bioelectroanalytical chemistry. Background technique [0002] Due to its own advantages, carbon fiber electrodes have been successfully applied in the fields of electrochemistry and life sciences. Due to the advantages of small size, high mass transfer rate, small double-layer capacitance, and small ohmic polarization, nanodisk electrodes have been widely used in the kinetic research of electrochemical reactions and quantitative detection in electroanalytical chemistry. Obviously, carbon nanofiber disk electrodes combine the advantages of nanodisk electrodes and carbon fiber electrodes, but it is not easy to prepare nanoscale carbon fiber disk electrodes at present. First of all, there is no commercialized nano-carbon fiber; usually, the electrochemical etchin...

Claims

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Application Information

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IPC IPC(8): G01N27/30
Inventor 刘军杨毅夫黄卫华熊跃邵惠霞王宗礼程介克
Owner WUHAN UNIV
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