Preparation method for electrochemical sensor based on fullerene functionalized modified electrode

A fullerene, electrochemical technology, applied in the direction of material electrochemical variables, etc.

Inactive Publication Date: 2014-10-29
WUXI BAILING SENSING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] But so far, no fullerene-functionalized carbon nanotubes (C 60 -CNT) / Ionic Liquid (IL) Composite Modified Electrode Application in Electrochemical Sensors

Method used

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Embodiment Construction

[0013] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with implementation.

[0014] A method for preparing a high-efficiency electrochemical sensor based on fullerene functionalized carbon nanotubes / ionic liquid modified electrodes for catecholamine detection, the steps are as follows:

[0015] (1) Grinding the glassy carbon electrode with 0.03 μm alumina powder.

[0016] (2) carbon nanotubes and fullerenes (C 60 / MWCNTs=1:1, mass ratio) was dispersed in 20mL of toluene, ultrasonically oscillated for 45min to form a 0.25mg / mL suspension, 25μL of the suspension was directly dropped on the surface of the glassy carbon electrode, and then the solvent was evaporated at room temperature.

[0017] (3) Place the electrode prepared in step (2) in an acrylonitrile solution containing 0.3mol / L tetrabutylamine hexafluorophosphate and perform potential scanning in the range of -2.0 to 3.0V (Ag / AgCl) , g...

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Abstract

The invention relates to a preparation method for an electrochemical sensor based on a fullerene functionalized modified electrode. The preparation method comprises the following steps: a glassy carbon electrode is put into an acrylonitrile solution containing 0.2-0.5mol / L of tetrabutyl-ammonium hexafluorophosphate; electric potential scanning is carried out in a range from -2.0V to 3.0V (Ag / AgCl) to obtain a C60-MWCNT (Multi Walled Carbon Nano Tubes) membrane; finally, the electrochemical sensor based on a fullerene functionalized carbon nano tube / ion liquid (C60-CNT / IL) composite membrane modified glassy carbon electrode is obtained. The electrochemical response of the electrochemical sensor provided by the invention on catecholamine is enhanced and the synergistic effect of the fullerene-carbon nano tube and the ion liquid is displayed; the electrochemical sensor has a very good application prospect in detection of catecholamine substances in an actual sample.

Description

technical field [0001] The invention relates to a method for preparing an electrochemical sensor, in particular to a method for preparing an electrochemical sensor based on a fullerene functionalized carbon nanotube / ionic liquid modified electrode. Background technique [0002] The electrochemical properties of fullerenes and their derivatives (including carbon nanotubes) are a very important direction in the chemical research of fullerenes. Due to their stable chemical properties, no metal elements and the repeatability of electrocatalytic responses , very suitable for application in the field of electrode surface modification, and fullerene modified electrodes have been applied in electrocatalysis. However, recent studies have found that in some processes electrocatalysis is caused by a little graphite doped in fullerenes, or oxides formed by electrode pretreatment on the surface of glassy carbon electrodes, while the oxidation or reduction of fullerenes themselves The ef...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
Inventor 孙京华潘正海
Owner WUXI BAILING SENSING TECH
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