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All-solid-state selective electrode based on functional ion liquid and preparation method of all-solid-state selective electrode

A functional ionic liquid and ion-selective technology, which is applied in the direction of material analysis, measuring devices, and instruments through electromagnetic means, can solve the problems of poor stability and repeatability of selective electrodes, eliminate the instability of potential response, and improve reliability. The effect of operability and stability

Inactive Publication Date: 2013-03-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The invention provides an all-solid-state ion selective electrode based on functional ionic liquid, which solves the problems of poor stability and repeatability of existing selective electrodes

Method used

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  • All-solid-state selective electrode based on functional ion liquid and preparation method of all-solid-state selective electrode
  • All-solid-state selective electrode based on functional ion liquid and preparation method of all-solid-state selective electrode
  • All-solid-state selective electrode based on functional ion liquid and preparation method of all-solid-state selective electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) An internal reference electrode is set on the substrate, and the internal reference electrode is connected to the electrode lead;

[0035] (2) Pretreat the internal reference electrode and the surface of the substrate with absolute ethanol to remove the floating dust on the surface, make the surface clean, consistent in state, and fully dry;

[0036] (3) Weigh 40mg of trimethylaniline hexafluorophosphate, and dissolve it in 1mL of organic solvent acetone to obtain an ionic liquid solution;

[0037] (4) Weigh 33mg of polyvinyl chloride (polymer), 0.4mg of potassium tetrachlorophenylboride (lipophilic macromolecule) and 1.6mg of valinomycin (potassium ionophore), dissolve it in 1.5mL of organic solvent tetrahydrofuran , then drop 65 μL of dinitrophenyloctyl ether (plasticizer), and mix thoroughly to obtain a potassium ion-sensitive mold solution;

[0038] (5) Take an appropriate amount of functional ionic liquid solution, drop it on the surface of the clean electrode...

Embodiment 2

[0044] (1) An internal reference electrode is set on the substrate, and the internal reference electrode is connected to the electrode lead;

[0045] (2) Pretreat the internal reference electrode and the surface of the substrate with absolute ethanol to remove the floating dust on the surface, make the surface clean, consistent in state, and fully dry;

[0046] (3) Weigh 40 mg of N-methyltetrahydrothiophene bistrifluoromethanesulfonimide salt, and dissolve it in 1 mL of organic solvent acetone to obtain an ionic liquid solution;

[0047] (4) Weigh 33mg of polyvinyl chloride (polymer), 0.2mg of sodium tetraphenylborate (lipophilic macromolecule) and 1.8mg of 10,19-bis[(octadecylcarbamoyl)methoxyacetyl] -1, 4, 7, 13, 16-pentoxa-10, 19-diazacycline hexacane (calcium ionophore), which was dissolved in 1.2 mL of organic solvent tetrahydrofuran, and then dropped into 65 μL of hexadiene Acid dioctyl ester (plasticizer), fully mix;

[0048] (5) Take an appropriate amount of function...

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Abstract

The invention discloses an all-solid-state selective electrode based on functional ion liquid and a preparation method of the all-solid-state selective electrode. The selective electrode comprises a substrate, an internal reference electrode, a solid-state ion layer and an ion sensitive film, wherein the solid-stage ion layer consists of the functional ion liquid; cations of the functional ion liquid have oxidation-reduction groups; and anions are hydrophobic groups. Due to the hydrophobicity and the light nonsensitivity of the functional ion liquid, influence of environment factors such as a water layer and light on the all-solid-state selective electrode is reduced; and the operability and the stability of the electrode during actual application are improved further.

Description

technical field [0001] The invention relates to the technical field of electrochemical sensors, in particular to a functional ionic liquid-based all-solid-state ion-selective electrode and a preparation method thereof. Background technique [0002] Ion-selective electrode is an indicator electrode for measuring the concentration of certain ions in solution by potentiometric method. It has the characteristics of high sensitivity, good selectivity, wide measurement range, convenient operation, and low cost, so it is widely used in the fields of environment, food, medicine, industry, and biology. [0003] A common ion selective electrode is composed of an ion sensitive membrane, an internal reference electrode and an internal filling liquid. When measuring, the internal reference electrode and the external reference electrode are used to form an ion sensor, and these two electrodes are inserted into the solution to be tested at the same time, and connected with an external mea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/333
Inventor 平建峰吴坚应义斌
Owner ZHEJIANG UNIV
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