A preparation method of electrospun nanofiber composite modified screen printing electrode

A technology of electrospinning nanofibers and screen printing electrodes, which is applied in the direction of nanotechnology, nanotechnology, cable/conductor manufacturing, etc., can solve the problems of high experimental requirements, insignificant specific surface area enlargement, poor stability, etc., and achieve simple process, Large effective specific surface area, good stability

Active Publication Date: 2019-10-15
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: Aiming at the problems of poor stability, insignificant specific surface area enlargement and high experimental requirements in existing electrospun nanofiber modified electrodes, the present invention provides a method for preparing a screen-printed electrode modified by electrospun nanofiber composites. Modified printed electrodes with good stability, large specific surface area, fast electron transfer rate, simple and firm production, and long-term storage can be obtained.

Method used

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  • A preparation method of electrospun nanofiber composite modified screen printing electrode
  • A preparation method of electrospun nanofiber composite modified screen printing electrode
  • A preparation method of electrospun nanofiber composite modified screen printing electrode

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Embodiment 1

[0043] (1) Preparation of electrospun nanofiber membrane by electrospinning method:

[0044] Dissolve PA6 and GR in a mixed solvent of formic acid / m-cresol / DMF (20:1:1~1:1:1, v / v) to form a polyamide 6-graphene mixture, and stir continuously at room temperature until obtaining Uniform and transparent spinnable solution. The spinning solution is placed in a medical syringe, and a micro-injection pump is used to supply the liquid. The positive and negative electrodes of the high-voltage electrostatic generator are respectively connected to the injection needle and the conductive receiving plate, and the high-voltage static electricity is directly applied to the needle. Obtain PA6-GR film;

[0045] Parameter setting: Needle: No. 5~10, Voltage: 10~30V, Syringe flow rate: 0.1~1.0mL / h, spacing (needle and electrode): 5~10cm, spinning time: 2~5min, ambient temperature: 20 ~30°C, Humidity: <40%.

[0046] (2) Preparation of electrospun nanofiber composites:

[0047] Remove the PA6-GR...

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Abstract

The invention discloses a preparation method of an electro-spun nano-fiber compound modified screen-printed electrode. The preparation method comprises the following steps that 1, an electro-spun nanofiber membrane polyamide 6-graphene PA6-GR is prepared by adopting an electrostatic spinning method; 2, the PA6-GR is cut into pieces, then is mixed with graphene and chitosan in an organic solvent and is stirred into paste, and an electro-spun nano-fiber compound PA6-GR / GR-CTS is prepared; 3, the surface of the screen-printed electrode is dropwise coated with the PA6-GR / GR-CTS and is dried to obtain the electro-spun nano-fiber compound modified screen-printed electrode. The prepared electro-spun nano-fiber compound modified screen-printed electrode has the excellent characteristics of good stability, large specific surface area, high electron transfer rate and the like, is simple in preparation and firm and can be stored for a long time. The modified electrode integrates the dual advantages of a disposable polished electrode and an electro-spun nano-fiber compound, a brand-new case is provided for modification and functionalization of printing electrodes, and the modified screen-printed electrode has the wide application prospect on the aspect of electrical biological sensing detection.

Description

technical field [0001] The invention relates to a preparation method of a modified electrode, in particular to a preparation method of an electrospun nanofiber composite modified screen printing electrode, and belongs to the field of nano-material modified electrodes. Background technique [0002] In the 1990s, with the rise of nanotechnology research, the preparation of nanofibers by electrospinning quickly became a research hotspot. The electrospun nanofibers prepared by this technology have the advantages of large specific surface area and high porosity, and have potential application value in many fields such as biomedicine and energy materials. Combining electrospun nanofibers with electrodes is a new method of modifying electrodes that has emerged in recent years, that is, electrospun nanofibers are modified on the electrode surface. Compared with the traditional preparation method, the process is simple, and the direct contact between the electrode and the electrospu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728B05D5/12B82Y30/00H01B13/00
Inventor 王晓英王祎杰蒋萌单艳群
Owner SOUTHEAST UNIV
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