Full-solid potassium ion sensor and preparation method thereof

A potassium ion, all-solid-state technology, used in instruments, scientific instruments, measuring devices, etc., can solve the problems of not easy to carry, time-consuming detection, etc., and achieve the effects of stable work, simplified production process, and rapid response.

Inactive Publication Date: 2010-10-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides an all-solid-state potassium ion sensor. Aiming at the separation of the selective electrode and the external reference electrode of the potassium ion sensor in the traditional potassium ion concentration detection, resulting in disadvantages such as not easy to carry and time-consuming detection, the potassium ion selective electrode and the external reference electrode are separated. The external reference electrode is integrated on a substrate, realizing the miniaturization of the potassium ion sensor, which is easy to carry, easy to operate and fast to detect

Method used

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  • Full-solid potassium ion sensor and preparation method thereof
  • Full-solid potassium ion sensor and preparation method thereof
  • Full-solid potassium ion sensor and preparation method thereof

Examples

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Effect test

Embodiment 1

[0048] The preparation of a kind of all-solid-state potassium ion sensor comprises the following steps:

[0049] (1) The carbon printing material is printed on the polypropylene substrate by screen printing technology to form the reaction electrode of the potassium ion selective electrode and the external reference electrode, and the silver printing material is printed on the polypropylene substrate by the screen printing technology, forming conductive leads and contact electrodes connected to the reaction electrodes;

[0050] (2) use the CMC aqueous solution that mass percent is 3 ‰ to scrub the reaction electrode surface, then wipe clean;

[0051] (3) Poly 3,4-ethylenedioxythiophene / polystyrene sulfonic acid (PEDOT / PSS, Clevios P ​​of German H.C.Starck Company, CAS No.155090-83-8) is dispersed in water to form a suspension, which The ratio is PEDOT / PSS:H 2 O=1:99, PEDOT / PSS vs. CO 2 (pH), O 2 It is insensitive and can improve the stability of measurement. Based on the to...

Embodiment 2

[0063] The preparation of a kind of all-solid-state potassium ion sensor comprises the following steps:

[0064] (1) The carbon printing material is printed on the polypropylene substrate by screen printing technology to form the reaction electrode, the conductive lead wire and the contact electrode of the potassium ion selective electrode and the external reference electrode;

[0065] (2) use the HEC aqueous solution that the mass percentage is 2 ‰ to scrub the reaction electrode, and then wipe it clean;

[0066] (3) Disperse PEDOT / PSS in water to form a suspension at a ratio of PEDOT / PSS:H 2 O=1:99, based on the total amount of the suspension, add TritonX-100 with a mass percentage of 0.5‰ and HEC with a mass percentage of 2% to the suspension to form an electrolyte slurry, and use the method of screen printing. The slurry is printed on the surface of the reaction electrode to form an electrolyte layer with a thickness of about 20 μm. The screen used is 150 mesh, the screen...

Embodiment 3

[0073] The preparation of a kind of all-solid-state potassium ion sensor comprises the following steps:

[0074] (1) The carbon printing material is printed on the polypropylene substrate by screen printing technology to form the reaction electrode, the conductive lead wire and the contact electrode of the potassium ion selective electrode and the external reference electrode;

[0075] (2) use the CMC aqueous solution that mass percent is 3 ‰ to scrub the reaction electrode surface, then wipe clean;

[0076] (3) Disperse PEDOT / PSS in water to form a suspension at a ratio of PEDOT / PSS:H 2 O=1:99, based on the total amount of the suspension, add 3% CMC to the suspension to form an electrolyte slurry, which is printed on the surface of the reaction electrode by screen printing to form an electrolyte layer. The thickness is about 20μm, the stencil used is 150 mesh, the mesh distance is 1mm, the scraper speed is 8mm / s, and the pressure is 1.8kg / cm 2 ;

[0077] (4) Add 1.27 mg of...

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Abstract

The invention discloses a full-solid potassium ion sensor, which comprises a substrate, a potassium ion selective electrode and an external reference electrode, wherein the potassium ion selective electrode and the external reference electrode are positioned in parallel on the substrate; both the potassium ion selective electrode and the external reference electrode comprise a reaction electrode,a contact electrode and a conductive lead for connecting the two electrodes; the reaction electrode is provided with an electrolyte layer; the electrolyte layer of the potassium ion selective electrode is provided with a potassium ion sensitive film; the electrolyte layer of the external reference electrode is provided with a reference film; and an insulating layer encircles the potassium ion sensitive film and the reference film and is provided with an opening for exposing the potassium ion sensitive film and the reference film, wherein the opening is used as a reaction area contacting solution to be detected during practical detection. The traditional potassium ion selective electrode and the traditional external reference electrode are integrated on the substrate, so the potassium ion sensor realizes microminiaturization and has the advantages of convenience for carrying, simple operation and rapid response. The invention also provides a preparation method for the full-solid potassium ion sensor. The preparation method simplifies the manufacturing flow, reduces the manufacturing cost and is suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of electrochemical sensors, in particular to an all-solid potassium ion sensor and a preparation method thereof. Background technique [0002] The detection of potassium ions has a wide range of applications in many fields such as medicine, biochemistry, pharmacy, chemical industry, environmental protection and food, especially the detection of potassium ions in human body fluids has important medical and clinical significance. Potassium is an indispensable constant element in the human body. Generally, the adult body contains about 150 grams of potassium. Its main function is to maintain the normal function of nerves and muscles. Once the human body lacks potassium, the normal exercise will be affected, not only the energy and physical strength will decrease, but also the heat resistance will also decrease, making people feel tired and weak; when the potassium deficiency is severe, it can lead to acid-base ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/413G01N27/30
Inventor 李光徐惠
Owner ZHEJIANG UNIV
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