Method for manufacturing nano carbon disk electrode with radius less than 500nm

Abstract

The invention discloses a nanometer disc electrode making method of more than 500 nm radius, which comprises the following steps: connecting the micron-size diameter carbon fiber or carbon pipe or carbon rod with the copper wire through the aluminum conductive glue; etching through electrochemical method in the alkali solution; fracturing the detected carbon material on the solution and air boundary part to generate nanometer-size point; depositing the electrophoretic insulation layer on the carbon material surface through direct current stabilized power; solidifying the heat insulating layer until the electrode is complete insulated; drying the insulated electrode in the plastic pipe through sealing glue; sanding and buffing or etching by laser; exposing the point of carbon material; appearing the carbon nanometer disc electrode of 'S' shape limit stabilized volt-ampere curve in the potassium chloride of iron cyanidation chemistry solution.

Description

technical field [0001] The invention relates to the manufacture of a nano-electrode, which uses materials such as carbon fibers, carbon felts, pyrolytic graphite, and carbon tubes to manufacture nano-carbon disk electrodes. The manufacturing technology involves nanomaterials and device preparation, chemical sensors, and biosensors. For analysis and detection, the fields involved include environment, biology, food, medicine, materials, archaeology and other technical fields. Background technique [0002] Compared with microelectrodes, nanoelectrodes are smaller in size and are more suitable for research in the fields of nanoscale electrochemistry and biological sciences, and can obtain higher signal-to-noise ratio and sensitivity. Especially in single-molecule detection, micro-area analysis, in vivo detection of living body, ultra-trace analysis, etc., the research in this area has attracted the interest and attention of many scientists in the world. [0003] For more than ...

AI Technical Summary

Problems solved by technology

[0007] The invention does not need to shrink the carbon material to expose the tip during the baking process, so it does not need to accurately control the deposition rate and film thickness of the insulating film of the electrophoretic paint on the electrode, and also overcomes the defect that the traditional electrophoretic paint is easy to leave small pinholes when it is cured

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