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Preparation of conductive polymer / inorganic nano composite electrode modified material

A kind of electrode modification and nanotechnology, which is applied in the field of preparation of conductive polymer/inorganic nanocomposite electrode modification materials, can solve the problems of difficult cleaning of modified electrodes, and achieve the effect of simplifying the electrode processing process, good monodispersity and convenient use

Inactive Publication Date: 2009-07-08
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that PEDOT must be electrochemically reapplied on the growth electrode before each use, and due to the insolubility and infusibility of PEDOT, it is very difficult to clean the modified electrode after use.

Method used

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  • Preparation of conductive polymer / inorganic nano composite electrode modified material
  • Preparation of conductive polymer / inorganic nano composite electrode modified material
  • Preparation of conductive polymer / inorganic nano composite electrode modified material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] A. In a 250mL Erlenmeyer flask, 0.0667g of a PAA aqueous solution with a solid content of 30wt% was added to 200mL of distilled water to configure a concentration of 0.1mg / mL PAA aqueous solution.

[0080] B. In a 50mL Erlenmeyer flask, add 0.142g EDOT monomer, 0.1093g CTAB, and 8mL, 0.1mg / mL PAA aqueous solution into 24mL distilled water, and stir magnetically at room temperature for 1 hour until the solution is completely clear.

[0081] C. Take another 50mL conical flask, put 0.81g FeCl 3 ·6H 2 O was dissolved in 8 mL of distilled water.

[0082] D. Add the solution obtained in step C to the solution obtained in step B, stir evenly, then transfer to a constant temperature water bath at 50°C and let it stand for reaction for 20 hours.

[0083] After the reaction was completed, the obtained dark blue flocculent precipitate was collected by centrifugation, washed several times with distilled water and ethanol to remove surfactant (CTAB) and by-products with lower mole...

Embodiment 2

[0085] Ultrasonic dispersion of the electrode modification material obtained in Example 1 into 7mL of ethanol, configured to a concentration of 3.45mg / mL PEDOT / β-Fe 3+ Ethanol dispersion of O(OH,Cl) nanospindles. Use a sample gun to take 6 μL of the above dispersion solution and drop it on the surface of the polished glassy carbon electrode. After the ethanol is completely evaporated at room temperature, PEDOT / β-Fe 3+ O(OH,Cl) nanospindle modified electrodes.

[0086] Configure 0.1M HClO 4 Aqueous solution, and 0.1M HClO with KI concentration of 0.1mM, 1mM, 10mM 4 Aqueous solution, CV test.

[0087] Such as Figure 8 As shown, compared with the polished but unmodified glassy carbon electrode, the obtained PEDOT / β-Fe 3+ O(OH,Cl) nanospindle modified electrode in 0.1M HClO 4 The response current in aqueous solution increases significantly, and has a good electrocatalytic response to KI, the current increases, and the peak position changes ( Figure 9 ). Such as Figure ...

Embodiment 3

[0089] Same as the method for preparing the modified electrode in Example 2, obtain PEDOT / β-Fe 3+ O(OH,Cl) nanospindle modified electrodes. Configure 0.1M HClO 4 Aqueous solution, and KIO3 concentration of 0.1mM, 1mM, 10mM 0.1M HClO 4 Aqueous solution, CV test.

[0090] Such as Figure 12 As shown, compared with the polished but unmodified glassy carbon electrode, the obtained PEDOT / β-Fe 3+ O(OH,Cl) nanospindle modified electrode in 0.1M HClO 4 KIO in aqueous solution 3 It has a good electrocatalytic response, the current increases, and the peak position changes ( Figure 13 ). Such as Figure 10 As shown, the prepared PEDOT / β-Fe 3+ O(OH, Cl) nanospindle-modified electrodes containing different concentrations of KIO 3 0.1M HClO 4 CV curves in aqueous solution: (a) 0, (b) 0.1, (c) 1, (d) 10 mM. It can be seen that the response current increases with the increase of KI concentration. Such as Figure 14 As shown, the prepared PEDOT / β-Fe 3+ O(OH,Cl) nanospindle mod...

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Abstract

The invention relates to a method for preparing a conducting polymer / inorganic nanometer composite electrode modified material. The method comprises the following steps of adding polyacrylic acid aqueous solution, EDOT monomer and cetyltrimethyl ammonium bromide together into distilled water or a mixed solvent of the distilled water and organic solvent for magnetic stirring to clarify; then adding ferricchloride into the mixture, adding chloroauric acid aqueous solution in thermostatic water bath, centrifuging and collecting the product, cleaning the product by distilled water and ethanol after reaction so as to remove the cetyltrimethyl ammonium bromide and by-products with lower molecular weight; and obtaining PEDOT / belta-Fe3O(OH, Cl) or PEDOT / belta-Fe3O(OH, Cl) nanometer spindle electrode modified material containing Au nano-particles. Electrode modified by the material has stable electro-catalytic response to iodine-containing compound (KI and KIO3 and D-ascorbic acid, so the method can be widely applied in various fields such as chemistry, clinical medicine and biomedicine.

Description

technical field [0001] The invention belongs to the technical field of modified electrodes, and in particular relates to a preparation method of a conductive polymer / inorganic nanometer composite electrode modification material. The electrode modified by this material has a stable electrocatalytic response to iodine-containing compounds (KI and KIO3) and D-ascorbic acid, etc., and can be widely used in many fields such as chemistry, clinical medicine and biomedicine. Background technique [0002] Conductive polymers not only have the optoelectronic properties of metals and inorganic semiconductors, but also have the flexible mechanical properties and processability of organic polymers. Therefore, since the appearance of conductive polymers in the 1970s, scientists have attracted widespread attention. In recent years, polyethylenedioxythiophene (PEDOT) has played an increasingly important role in the family of conductive polymers due to its high conductivity, moderate band ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L65/00C08K3/10G01N27/30
Inventor 张万金茆卉卢晓峰王力风王策
Owner JILIN UNIV
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