Preparation method and application of autoluminescence-exictation-based hydrogen peroxide electrochemical sensor

A technology of self-luminescence excitation and hydrogen peroxide, applied in chemiluminescence/bioluminescence, analysis through chemical reaction of materials, electrochemical variables of materials, etc., can solve the problems of restricting wide application and affecting the convenience of operation , achieve high selectivity detection, easy operation, improve detection sensitivity and detection limit

Inactive Publication Date: 2016-07-20
UNIV OF JINAN
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] However, because electrochemiluminescence sensors require external light signal capture devices such as photodiodes, while photoelectrochemical sensors require external light sources to excite photosensitive materials, this affects the convenience of both operations to a certain extent and limits They are more widely used in actual production and life

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  • Preparation method and application of autoluminescence-exictation-based hydrogen peroxide electrochemical sensor

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Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1 A kind of hydrogen peroxide photoelectrochemical sensor based on self-luminous excitation

[0037] A method for preparing a hydrogen peroxide photoelectrochemical sensor based on self-luminescence excitation, the specific preparation steps are:

[0038] (1) Preparation of electrochemiluminescence working electrode W1:

[0039] 1) Use ITO conductive glass as the working electrode, and drop-coat NH on the surface of the electrode 4 NiPO 4 , covering an area of ​​1cm×1cm, and dry at room temperature;

[0040] 2) Immerse the working electrode obtained in 1) into the electrolyte solution, and the immersion area is NH 4 NiPO 4 For the covered area, use a three-electrode system to electrochemically deposit the working electrode, take out the working electrode after deposition, wash it with ultrapure water, and dry it at 4°C in the dark to prepare the electrochemiluminescence working electrode W1;

[0041] The NH 4 NiPO 4 The solution is an aqueous solution of...

Embodiment 2

[0058] Embodiment 2 A kind of hydrogen peroxide photoelectrochemical sensor based on self-luminous excitation

[0059] A method for preparing a hydrogen peroxide photoelectrochemical sensor based on self-luminescence excitation, the specific preparation steps are:

[0060] (1) Preparation of electrochemiluminescence working electrode W1:

[0061] The preparation steps are the same as the preparation steps of W1 in Example 1, the difference is: the ammonium salt addition is 0.3g in the preparation step of the nickel ammonium phosphate micro-nano material, the phosphate addition is 0.20g, and the nickel dichloride addition is 0.20g, the stirring temperature and time are 38°C and 12h respectively; the concentration of luminol in the electrolyte is 5mmol / L, and the concentration of sulfuric acid is 0.5mol / L; when electrochemical deposition is carried out by cyclic voltammetry, cycle 25 times.

[0062] (2) Preparation of photoelectrochemical working electrode W2:

[0063] 1) Usin...

Embodiment 3

[0069] Embodiment 3 A hydrogen peroxide photoelectrochemical sensor based on self-luminous excitation

[0070] A method for preparing a hydrogen peroxide photoelectrochemical sensor based on self-luminescence excitation, the specific preparation steps are:

[0071] (1) Preparation of electrochemiluminescence working electrode W1:

[0072] The preparation steps are the same as the preparation steps of W1 in Example 1, the difference is: the ammonium salt addition is 0.4g in the preparation step of the nickel ammonium phosphate micro-nano material, the phosphate addition is 0.25g, and the nickel dichloride addition is 0.25g, the stirring temperature and time are 45°C and 14h respectively; the concentration of luminol in the electrolyte is 10mmol / L, and the concentration of sulfuric acid is 1.0mol / L; when electrochemical deposition is carried out by cyclic voltammetry, cycle 30 times.

[0073] (2) Preparation of photoelectrochemical working electrode W2:

[0074] 1) Using ITO c...

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Abstract

The invention discloses a preparation method for a difunctional hydrogen peroxide sensor constructed on the basis of a functional nanometer material and with an autoluminescence excitation function. The prepared sensor is easy to operate, convenient to carry, high in detection speed and low in cost, and can be used for rapidly and sensitively detecting hydrogen peroxide in the fields of daily production and living and the like.

Description

technical field [0001] The invention relates to a preparation method of a sensor for detecting hydrogen peroxide, and belongs to the technical field of novel nano functional materials and electrochemical biosensing analysis. Background technique [0002] Hydrogen peroxide is an oxidizing agent, which can be decomposed into water and oxygen under normal circumstances, but it is relatively slow. When a catalyst (or biological enzyme) is added, the reaction speed is accelerated, so that the amount of hydrogen peroxide or the catalyst (or The amount of biological enzymes), and hydrogen peroxide often exists in the form of reaction intermediates in organisms. Therefore, hydrogen peroxide plays an important role in the fields of medical diagnosis, clinical treatment, environmental testing and food production. Research The development of hydrogen peroxide detection method also has very important application value. Due to the advantages of simple operation and fast detection speed,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/76G01N27/30
CPCG01N21/76G01N27/305
Inventor 张勇杜斌任祥闫涛吴丹
Owner UNIV OF JINAN
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