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Glassy carbon electrode (GCE) modified by conductive copolymer carbon nanotube composite, preparation method thereof and method for removing perchlorat from water

A glassy carbon electrode, carbon nanotube technology, applied in electrodes, chemical instruments and methods, electrolysis process, etc., can solve problems such as difficult processing and insignificant effects, achieve no secondary pollution, convenient operation, and increase electrode size. area effect

Inactive Publication Date: 2010-01-27
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high water solubility and reaction inertness of perchlorate ion, traditional water treatment technology is difficult to deal with and the effect is not obvious

Method used

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  • Glassy carbon electrode (GCE) modified by conductive copolymer carbon nanotube composite, preparation method thereof and method for removing perchlorat from water
  • Glassy carbon electrode (GCE) modified by conductive copolymer carbon nanotube composite, preparation method thereof and method for removing perchlorat from water
  • Glassy carbon electrode (GCE) modified by conductive copolymer carbon nanotube composite, preparation method thereof and method for removing perchlorat from water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Disperse the carbon nanotubes in DMF and ultrasonically disperse them for 10 hours;

[0023] 2) Take out 2 microliters of carbon nanotubes dispersed in step 1) with a micro-syringe and drop them on the surface of a clean glassy carbon electrode, let stand for 24 hours, and air-dry for later use;

[0024] 3) The three electrodes used in the electrolytic cell are set, and the three electrodes are composed of a modified glassy carbon working electrode, a platinum counter electrode and a saturated calomel reference electrode;

[0025] 4) Prepare a mixed solution of aniline, o-aminophenol and hydrochloric acid, wherein the concentration of aniline is 0.01mol dm -3 , the concentration of o-aminophenol is 1.0mmol dm -3 , the concentration of hydrochloric acid is 0.5mol dm -3 ;

[0026] 5) Put the three electrodes of step 3) into the prepared mixed solution to form a three-electrode system electrolytic cell, perform electrolysis with a constant potential method, the elect...

Embodiment 2

[0029] 1) Disperse the carbon nanotubes in DMF and ultrasonically disperse them for 24 hours;

[0030] 2) Take out 10 microliters of carbon nanotubes dispersed in step 1) with a micro-syringe and drop them on the surface of a clean glassy carbon electrode, let stand for 36 hours, and air-dry for later use;

[0031] 3) The three electrodes used in the electrolytic cell are set, and the three electrodes are composed of a modified glassy carbon working electrode, a platinum counter electrode and a saturated calomel reference electrode;

[0032] 4) Prepare a mixed solution of aniline, o-aminophenol and hydrochloric acid, wherein the concentration of aniline is 2.0mol dm -3 , the concentration of o-aminophenol is 20mmol dm -3 , the concentration of hydrochloric acid is 6.0mol dm -3 ;

[0033] 5) Put the three electrodes of step 3) into the prepared mixed solution to form a three-electrode system electrolytic cell, perform electrolysis with a constant potential method, the electr...

Embodiment 3

[0036] 1) Disperse the carbon nanotubes in DMF and ultrasonically disperse them for 24 hours;

[0037] 2) Take out 10 microliters of carbon nanotubes dispersed in step 1) with a micro-syringe and drop them on the surface of a clean glassy carbon electrode, let stand for 30 hours, and air-dry for later use;

[0038] 3) The three electrodes used in the electrolytic cell are set, and the three electrodes are composed of a modified glassy carbon working electrode, a platinum counter electrode and a saturated calomel reference electrode;

[0039] 4) Prepare a mixed solution of aniline, o-aminophenol and hydrochloric acid, wherein the concentration of aniline is 1.0mol dm -3 , the concentration of o-aminophenol is 5.0mmol dm -3 , the concentration of hydrochloric acid is 3.0mol dm -3 ;

[0040] 5) Put the three electrodes of step 3) into the prepared mixed solution to form a three-electrode system electrolytic cell, perform electrolysis with a constant potential method, the elect...

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Abstract

The invention discloses a glassy carbon electrode (GCE) modified by aniline-co-aminophenol copolymer carbon nanotube composite, a preparation method thereof and a method for removing perchlorat from water. The preparation method of the glassy carbon electrode comprises the following steps: dispersing carbon nanotubes in DMF; taking a proper amount of mixed liquor to drip onto the clean surface of the glassy carbon electrode, and air drying; carrying out electrolytic polymerization on a three-electrode system consisting of a glassy carbon working electrode modifying the carbon nanotube, a platinum counter electrode and a calomel reference electrode in the mixed liquor of hydrochloric acid, aniline and o-aminophenol through a constant bit method; thus, generating aniline-co-aminophenol copolymer carbon nanotube composite on the surface of the carbon nanotube modified glassy carbon electrode after a certain time. The modified electrode is washed by diluted hydrochloric acid and secondary water successively, forms the three-electrode system with the platinum counter electrode and the calomel reference electrode, and is doped in the water body containing perchlorat. The perchlorat is doped on the glassy carbon electrode modified by the aniline-co-aminophenol copolymer carbon nanotube composite, which can be seen clearly in an X-ray photoelectron spectroscopy.

Description

Technical field: [0001] The invention relates to a glassy carbon electrode, in particular to a glassy carbon electrode modified by a conductive copolymer carbon nanotube compound, and also relates to the application of the electrode in removing perchlorate radicals in water bodies. Background technique: [0002] Perchlorate has been detected in surface water, drinking water and soil and has become a hazard to the environment. Due to the high water solubility and inert reaction of perchlorate ion, the traditional water treatment technology is difficult to deal with and the effect is not obvious. Conductive copolymers have electrical doping-dedoping properties due to their special optical and conductive copolymers. Under the control of an electric field, the conductive polymers in the oxidized state can combine with the anions in the water body, that is, doping, so as to achieve the target anion Combined with the polymer, the purpose of removing the anion is achieved. Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/12C02F1/461
Inventor 张娅李琴唐荣孙立翟建平
Owner NANJING UNIV
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