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Ferricyanide composite electrode material preparation method and applications of ferricyanide composite electrode material in detection of hydrogen peroxide

A composite electrode, ferricyanide technology, applied in the direction of material analysis, material analysis, material electrochemical variables, etc. by electromagnetic means, to achieve the effects of simple preparation, improved response sensitivity, and good stability

Active Publication Date: 2018-08-21
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, ferricyanide / polyaniline / graphenized carbon nanotube composites have not been reported for the preparation of modified electrodes for H 2 o 2 biological sensor

Method used

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  • Ferricyanide composite electrode material preparation method and applications of ferricyanide composite electrode material in detection of hydrogen peroxide
  • Ferricyanide composite electrode material preparation method and applications of ferricyanide composite electrode material in detection of hydrogen peroxide
  • Ferricyanide composite electrode material preparation method and applications of ferricyanide composite electrode material in detection of hydrogen peroxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] LiPB-PANI-PUCNTs composite preparation steps are as follows:

[0032] (1) Dissolve 50 mL of 1.0 M K 3 Fe(CN) 6 aqueous solution was added to 50 mL of 0.8 M AgNO 3 solution, stirred vigorously for 2 hours to obtain a bright yellow precipitate, filtered, washed with water, and washed with ethanol, and dispersed the precipitate into 100 mL of water.

[0033](2) Add 100 mL of 0.6 M LiCl solution to the above dispersion, stir vigorously for 2 h to obtain a lime green suspension, filter to obtain about 50 mmol / L LiFe(CN) 6 clear yellow liquid.

[0034] (3) Mix 20 µL aniline+3 mL 1.0 M HCl+27 mL 50 mmol / L Li 3 Fe(CN) 6 Put in the reactor. Then put the installed reactor into an electric heating constant temperature drying oven at 120 °C, and react for 24 h. After the reaction time was over, the reaction kettle was taken out from the electric constant temperature drying oven. After cooling for a period of time, the solution in the reaction kettle was poured into a beaker...

Embodiment 2

[0044] LiPB-PANI-PUCNTs composite preparation steps are as follows:

[0045] (1) Dissolve 50 mL of 1.0 M K 3 Fe(CN) 6 aqueous solution was added to 100 mL of 0.8 M AgNO 3 solution, stirred vigorously for 2 hours to obtain a bright yellow precipitate, filtered, washed with water, and washed with ethanol, and dispersed the precipitate into 100 mL of water.

[0046] (2) Add 100 mL of 1.0 M LiCl solution to the above dispersion, stir vigorously for 2 h to obtain a lime green suspension, filter to obtain about 0.1 mol / L LiFe(CN) 6 clear yellow liquid.

[0047] (3) Mix 40 µL aniline+3 mL 1.0 M HCl+27 mL 50 mmol / L Li 3 Fe(CN) 6 Put in the reactor. Then put the installed reactor into an electric heating constant temperature drying oven at 140 °C, and react for 24 h. After the reaction time was over, the reaction kettle was taken out from the electric constant temperature drying oven. After cooling for a period of time, the solution in the reaction kettle was poured into a beak...

Embodiment 3

[0051] LiPB-PANI-PUCNTs composite preparation steps are as follows:

[0052] (1), (2) are the same as Example 1.

[0053] (3) Mix 100 µL aniline+3 mL 1.0 M HCl+27 mL 50 mmol / L Li 3 Fe(CN) 6 Put in the reactor. Then put the installed reactor into an electric heating constant temperature drying oven at 160 °C, and react for 24 h. After the reaction time was over, the reaction kettle was taken out from the electric constant temperature drying oven. After cooling for a period of time, the solution in the reaction kettle was poured into a beaker, and then centrifuged to obtain a black-blue LiPB-PAn precipitate. The obtained precipitate was washed with ethanol, and finally a dark blue LiPB-PAn precipitate was obtained. The obtained LiPB-PAn precipitate was dried in an electric thermostat oven at 80 °C for 24 h.

[0054] (4) 100 μl aniline and 0.05g PUCNTs and 3 ml 1.0 mol / L HCl and 27 ml Li 3 Fe(CN) 6 The precursors were mixed and placed in a reaction kettle, heated at 160 °C...

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Abstract

The invention discloses a ferricyanide composite electrode material preparation method and applications of the ferricyanide composite electrode material in detection of hydrogen peroxide, and relatesto preparation and applications of a nanometer electrochemical material. The preparation method comprises: mixing K3Fe(CN)6, a AgNO3 solution and a LiCl solution to obtain a Li3Fe(CN)6 precursor; andplacing an aniline monomer, the prepared Li3Fe(CN)6 precursor and treated grapheneized carbon nano-tubes in a hydrothermal kettle, carrying out a reaction, filtering, and drying to obtain the LiPB-Pan-PUCNTs composite material. According to the present invention, Li3Fe(CN)6 has the oxidation-reduction potential in the electric conduction potential range of PAn, such that the PAn array can rapidlytransfer the charge to the oxidation-reduction center of Li3Fe(CN)6; and the grapheneized carbon nano-tubes have advantages of excellent conductivity, large specific surface area and biocompatibility,such that the in-situ polymerization and mixing can improve the conductivity and the dispersibility of the composite material and can rapidly achieve the direct electron transfer to the electrode surface so as to correspondingly improve the response sensitivity to the hydrogen peroxide detection.

Description

technical field [0001] The present invention relates to a kind of preparation method of nano electrochemical material and its application in H 2 o 2 detection, especially a method for preparing a ferricyanide composite electrode material and its detection of hydrogen peroxide. Background technique [0002] Due to the special properties different from conventional materials, nanomaterials have shown broad application prospects in many fields such as chemical engineering, medicine, environmental protection, microelectronics, energy and national defense, and have been practically applied in some fields. [0003] As a branch of chemical sensors, electrochemical biosensors have been widely studied and applied in the field of analysis and detection because of their convenience, high sensitivity, good selectivity and easy automation. [0004] Due to the high specific surface area, good biocompatibility, and controllability of shape and structure, nanostructured materials have bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327G01N27/30
CPCG01N27/308G01N27/3278
Inventor 徐立环苏畅李龙徐帅夏宇马姣姣郭朋举
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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