Preparation method and application of a hydrogen peroxide photoelectrochemical sensor based on self-luminescence excitation

A self-luminous excitation, hydrogen peroxide technology, applied in chemiluminescence/bioluminescence, analysis through chemical reactions of materials, electrochemical variables of materials, etc., can solve the problems that affect the convenience of operation and limit the wide range of applications , to achieve the effects of convenient operation, high selectivity detection, and broad market application value

Inactive Publication Date: 2018-03-27
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • 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

Method used

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  • Preparation method and application of a hydrogen peroxide photoelectrochemical sensor based on self-luminescence excitation

Examples

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Embodiment 1

[0036] Example 1 A 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 electrochemiluminescent working electrode W1:

[0039] 1) Use ITO conductive glass as the working electrode, and drop-coat NH on the surface of the electrode 4 NiPO4 , covering an area of ​​1 cm × 1 cm, 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 The covered area was electrochemically deposited on the working electrode using a three-electrode system. After deposition, the working electrode was taken out, washed with ultrapure water, and dried 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 nic...

Embodiment 2

[0058] Example 2 A 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 0.3 g in the preparation step of the nickel ammonium phosphate micro-nano material, the phosphate addition is 0.20 g, and the nickel dichloride addition is 0.20 g, the stirring temperature and time were 38 ℃ and 12 h, respectively; the concentration of luminol in the electrolyte was 5 mmol / L, and the concentration of sulfuric acid was 0.5 mol / L; when cyclic voltammetry was used for electrochemical deposition, cycle 25 times .

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

[0063] 1) Using IT...

Embodiment 3

[0069] Example 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 0.4 g in the preparation step of the nickel ammonium phosphate micro-nano material, the phosphate addition is 0.25 g, and the nickel dichloride addition is 0.25 g, the stirring temperature and time were 45 ℃ and 14 h, respectively; the concentration of luminol in the electrolyte was 10 mmol / L, and the concentration of sulfuric acid was 1.0 mol / L; when the electrochemical deposition was carried out by cyclic voltammetry, cycle 30 times .

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

[0074] ...

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Abstract

The invention discloses a preparation method of a self-luminous excitation dual-functional hydrogen peroxide sensor based on functional nanomaterials. The prepared sensor is simple to operate, easy to carry, fast to detect, and low in cost, and can be used in daily production, life, etc. Rapid and sensitive detection of hydrogen peroxide in the field.

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 Patents(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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