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Multi-wall carbon nanotube/poly L-histidine composite material-modified glassy carbon electrode and preparation method thereof

A technology of multi-walled carbon nanotubes and glassy carbon electrodes, which is applied in the direction of material electrochemical variables, material analysis, and material analysis through electromagnetic means, which can solve the problems of unfavorable electrode surface modification, easy agglomeration, and disadvantages, and achieve enhanced Electrochemical reactivity, good electrical conductivity, and low impedance

Active Publication Date: 2017-08-11
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large surface tension of multi-walled carbon nanotubes, the hydrophobicity of multi-walled carbon nanotubes is enhanced, and agglomeration is more likely to occur, which is not conducive to its modification on the electrode surface, and is also not conducive to the play of its advantages after modification.

Method used

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  • Multi-wall carbon nanotube/poly L-histidine composite material-modified glassy carbon electrode and preparation method thereof
  • Multi-wall carbon nanotube/poly L-histidine composite material-modified glassy carbon electrode and preparation method thereof
  • Multi-wall carbon nanotube/poly L-histidine composite material-modified glassy carbon electrode and preparation method thereof

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Embodiment 1

[0025] A multi-wall carbon nanotube / poly-L-histidine composite material modified glassy carbon electrode includes a glassy carbon electrode on which poly-L-histidine and multi-wall carbon nanotubes are sequentially deposited on the surface of the glassy carbon electrode.

[0026] A preparation method of the multi-wall carbon nanotube / poly-L-histidine composite material modified glassy carbon electrode, which comprises the following steps:

[0027] For pretreatment, first polish the glassy carbon electrode on sandpaper, and then polish it with 0.3μm aluminum oxide powder until the surface of the glassy carbon electrode appears mirrored; then ultrasonically clean it in double distilled water for 2 to 3 minutes, take it out, and use Rinse with double distilled water and wipe dry with filter paper to obtain a bare glassy carbon electrode; put the bare glassy carbon electrode into 1.0×10 -3 mol / L of K 3 Fe(CN) 6 And 0.1mol / L KNO 3 Measure the cyclic voltammogram of the mixed aqueous solu...

Embodiment 2

[0031] A multi-wall carbon nanotube / poly-L-histidine composite material modified glassy carbon electrode includes a glassy carbon electrode on which poly-L-histidine and multi-wall carbon nanotubes are sequentially deposited on the surface of the glassy carbon electrode.

[0032] A preparation method of the multi-wall carbon nanotube / poly-L-histidine composite material modified glassy carbon electrode, which comprises the following steps:

[0033] For pretreatment, first polish the glassy carbon electrode on sandpaper, and then polish it with 0.3μm aluminum oxide powder until the surface of the glassy carbon electrode appears mirrored; then ultrasonically clean it in double distilled water for 2 to 3 minutes, take it out, and use Rinse with double distilled water and wipe dry with filter paper to obtain a bare glassy carbon electrode; put the bare glassy carbon electrode into 1.0×10 -3 mol / L of K 3 Fe(CN) 6 And 0.1mol / L KNO 3 Measure the cyclic voltammogram of the mixed aqueous solu...

Embodiment 3

[0037] A multi-wall carbon nanotube / poly-L-histidine composite material modified glassy carbon electrode includes a glassy carbon electrode on which poly-L-histidine and multi-wall carbon nanotubes are sequentially deposited on the surface of the glassy carbon electrode.

[0038] A preparation method of the multi-wall carbon nanotube / poly-L-histidine composite material modified glassy carbon electrode, which comprises the following steps:

[0039] For pretreatment, first polish the glassy carbon electrode on sandpaper, and then polish it with 0.3μm aluminum oxide powder until the surface of the glassy carbon electrode appears mirrored; then ultrasonically clean it in double distilled water for 2 to 3 minutes, take it out, and use Rinse with double distilled water and wipe dry with filter paper to obtain a bare glassy carbon electrode; put the bare glassy carbon electrode into 1.0×10 -3 mol / L of K 3 Fe(CN) 6 And 0.1mol / L KNO 3 Measure the cyclic voltammogram of the mixed aqueous solu...

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Abstract

The invention provides a multi-wall carbon nanotube / poly L-histidine composite material-modified glassy carbon electrode, which comprises a glassy carbon electrode, wherein poly L-histidine and a multi-wall carbon nanotube are sequentially deposited on the surface of the glassy carbon electrode. The multi-wall carbon nanotube / poly L-histidine composite material-modified glassy carbon electrode has electrocatalytic activity, small impedance and good conductivity and has a good application prospect. The invention further provides a preparation method of the multi-wall carbon nanotube / poly L-histidine composite material-modified glassy carbon electrode. The method is mild in condition, easy to control and suitable for massive production.

Description

Technical field [0001] The invention relates to a modified glassy carbon electrode, in particular to a multi-wall carbon nanotube / poly-L-histidine composite material modified glassy carbon electrode and a preparation method thereof. Background technique [0002] At present, there are endless reports of chemically modified electrodes in electrochemistry, especially the research on glassy carbon electrodes. However, because the electrocatalytic performance of the glassy carbon electrode is poor and the electron transfer between the reactants is less, people usually choose to modify the composite material on the surface of the glassy carbon electrode to improve the electrochemical performance of the glassy carbon electrode. [0003] Multi-walled carbon nanotubes are a new type of carbon material. Because of their excellent electrical conductivity and good biocompatibility, they are widely used in the preparation of modified electrodes. However, because the multi-walled carbon nanotub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30
CPCG01N27/308
Inventor 宋力许春萱荣宪举董高丽何永杨吉刘彩蝶
Owner XINYANG NORMAL UNIVERSITY
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