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Electronic conducting polymer membrane electrode for detecting dihydroxy-benzene and its prepn method

A technology of conductive polymers and polymer films, which is applied in the direction of measuring devices, electrochemical variables of materials, and material analysis through electromagnetic means, can solve the problems of reduced polymer solubility, achieve improved catalytic performance, high yield, The effect of increasing the active potential range

Inactive Publication Date: 2005-03-30
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, since there are many imine groups on the main chain of the PAn molecule, using the reaction ability of the imine group, functional acid doping is used to reduce the energy level difference of the electronic transition of the conductive polymer and improve its conductivity, but the protonic acid doping at the same time The solubility of the polymer is greatly reduced

Method used

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  • Electronic conducting polymer membrane electrode for detecting dihydroxy-benzene and its prepn method
  • Electronic conducting polymer membrane electrode for detecting dihydroxy-benzene and its prepn method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 100mL of 1.0mol / L TSA aqueous solution into a 250mL three-necked flask, put it in an ice bath, pass nitrogen gas to exhaust oxygen, wait for the temperature to stabilize at around 2-3°C, add 2.14g of o-toluidine dropwise, [M]=0.01mol / L, Stir well and add 2 drops of saturated CoSO 4 solution as a catalyst. Dissolve ammonium persulfate (APS) in 60mL of 1.0mol / L TSA solution, [APS] / [M]=0.01, slowly drop into the three-necked bottle, about 2.0h to finish. After continuing the reaction for 10 hours, the reaction solution was placed in a refrigerator at 5°C for 36 hours; then the obtained reaction solution was suction-filtered, and the solid content was washed with deionized water until the filtrate was neutral, and then washed several times with ethanol until the filtrate was colorless; Vacuum-dried at 60°C to obtain green doped POT (TSA).

[0017] Prepare POT (TSA) into a 3.0 mg / mL DMF solution, and use a micro-vortex mixer to aid dissolution; take a certain amount of...

Embodiment 2

[0020] Add 140mL of 1.0mol / L TSA aqueous solution into a 250mL three-necked flask, put it in an ice bath, pass nitrogen gas to exhaust oxygen, wait for the temperature to stabilize at around 2-3°C, add 1.5g of o-toluidine dropwise, [M]=0.07mol / L, Stir well and add 3 drops of saturated CoSO 4 solution as a catalyst. Dissolve APS in 10mL of 1.0mol / LTSA solution, [APS] / [M]=0.5, slowly drop into the three-necked bottle, about 1.5h to finish. After continuing the reaction for 6 hours, the reaction solution was placed in a refrigerator at 6°C for 48 hours; then the obtained reaction solution was suction-filtered, and the solid content was washed with deionized water until the filtrate was neutral, and then washed several times with ethanol until the filtrate was colorless; Vacuum drying at room temperature to obtain green doped POT (TSA).

[0021] Prepare POT (TSA) into a 3.0mg / mL DMF solution, and use a micro-vortex mixer to aid dissolution; take a certain amount of polymer solutio...

Embodiment 3

[0023] Add 200mL of 1.0mol / L TSA aqueous solution into a 250mL three-necked flask, put it in an ice bath, pass nitrogen gas to exhaust oxygen, wait for the temperature to stabilize at around 2-3°C, add 3.0g of o-toluidine dropwise, [M]=0.14mol / L, Stir well and add 3 drops of saturated CoSO 4 solution as a catalyst. Dissolve APS in 100mL 1.0mol / L TSA solution, [APS] / [M]=2, slowly drop into the three-necked bottle, about 3.0h to finish. After continuing the reaction for 15 hours, the reaction solution was placed in a refrigerator at 8°C for 24 hours; then the obtained reaction solution was suction-filtered, and the solid content was washed with deionized water until the filtrate was neutral, and then washed several times with ethanol until the filtrate was colorless; Vacuum-dried at 40°C to obtain green doped POT (TSA).

[0024] Prepare POT (TSA) into a 3.0mg / mL DMF solution, and use a micro-vortex mixer to aid in dissolution; take a certain amount of polymer solution and coat...

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Abstract

The invention relates to an electronic conductive polymer film electrode used for detecting paradioxybenzone and its preparation method. Said invention is characterized by adopting macromolecular function acid to make doping so as to raise electrochemical stability of polymer film and catalytic power of polymer for catalyzing paradioxybenzene. Said polymer film electrode includes indifferent electrode base body and conductive polymer film, said conductive polymer film is poly-o-toluidine in whith toluene-p-sulfonic acid is doped, and the attachment quantity of polymer on the base body electrode surface is 0.3-1.0 mg.-sq.cm. Said invention also provides its preparation method and concrete steps, its once operation can prepare several medified electrodes.

Description

technical field [0001] The invention relates to a conductive polymer film electrode, in particular to an electronically conductive polymer film electrode used as an electrochemical sensor for detecting hydroquinone, a water pollutant, and a preparation method thereof. Background technique [0002] Chemically modified electrode (Chemical modified electrode, CME) is on the surface of the conductive electrode, chemical groups with certain functions are attached to the surface of the electrode by physical or chemical methods, endowing the electrode with certain specific properties, and highly selective desired response. Compared with the monolayer chemically modified electrode, the conductive polymer film chemically modified electrode has a large electrochemical response signal, is easy to observe, has greater chemical and electrochemical stability, is not easy to be lost, and has strong anti-interference and anti-poison capabilities. Good reproducibility, long service life and...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/333
Inventor 许一婷戴李宗陈江枫吴辉煌
Owner XIAMEN UNIV
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