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Preparation method and application of a nanofiber modified electrode

A nanofiber and modified electrode technology, which is applied in the field of preparation of nanofiber modified electrodes, can solve the problems of poor biocompatibility, non-specific recognition function, poor electrode stability, etc., and achieve good stability and fast electron transfer rate , the effect of high yield

Active Publication Date: 2019-06-14
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there are many reports on the methods of modifying electrodes by different methods, but the existing problems are also obvious, such as electrical conductivity, poor electrode stability, poor biocompatibility, and no specific recognition function.

Method used

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  • Preparation method and application of a nanofiber modified electrode
  • Preparation method and application of a nanofiber modified electrode
  • Preparation method and application of a nanofiber modified electrode

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Embodiment

[0037] This embodiment discloses a method for preparing a nanofiber modified electrode, and the specific method includes the following steps:

[0038] (1) Preparation of gold nanoparticles:

[0039] Prepare 100mmol / L HEPES solution, 20mmol / L polyvinylpyrrolidone solution, 1% (wg%) chloroauric acid solution; place the test tube in a 25°C water bath, add 1mL HEPES solution and 9mL polyvinylpyrrolidone solution; shake the test tube to make The solution is mixed evenly; 250 μL of 1% (wg%) chloroauric acid solution is slowly added dropwise to the test tube to prevent the test tube from vibrating; after reacting for 30 minutes, centrifuge to separate the particles from the solution.

[0040] Such as figure 1 As shown, adopt different rotating speeds (0-7000rpm) to centrifuge the obtained nano-gold solution, draw the relationship between the particle size and the rotating speed of the nano-gold sediment under different centrifugal speeds, and compare the effect of gold nanoparticles...

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Abstract

The invention relates to a production method and an application of a nano-fiber modified electrode. The method comprises the following steps: 1, preparing gold nano-particles from 4-(2-hydroxyerhyl)piperazine-1-erhaesulfonic acid, polyvinylpyrrolidone and a chloroauric acid solution; 2, uniformly mixing polyethersulfone resin, dimethyl formamide, dimethyl phthalate and the gold nano-particles to obtain a uniform spinning solution; 3, carrying out high-voltage electric field drawing on the spinning solution prepared in step 2 to form a nanofiber membrane on the surface of a boron-doped diamond electrode; and 4, eluting the electrode produced in step 3 with methanol to obtain the nano-fiber modified electrode having a molecularly-imprinted recognition function. A composite nano-fiber electrode modification material having the advantages of good stability, good biocompatibility, good identification specificity and large effective specific surface area is obtained through combining an electrospinning technology.

Description

technical field [0001] The invention relates to a nanometer material modified electrode, in particular to a preparation method and application of a nanofiber modified electrode. Background technique [0002] Nanomaterial-modified electrodes have shown excellent performance in enhancing electrode conductivity, promoting electron transfer, and improving analyte detection sensitivity and selectivity. Electrospinning modified electrodes is one of the important branches. Due to the large specific surface area of ​​electrospun nanofibers, the use of electrospun nanofibers to modify electrodes can significantly increase the effective working area of ​​electrodes, which is conducive to the adsorption of more modified substances on the electrode surface, and effectively improves the concentration of target molecules. Sensitivity of detection. At present, relevant research at home and abroad is mainly focused on the electrical sensing and detection of bioactive molecules by nanofiber...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/48G01N27/30
CPCG01N27/30G01N27/48
Inventor 戎非王稷吴巍
Owner SOUTHEAST UNIV
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