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Production method and application of hydrogen peroxide photoelectrochemistry sensor without peripheral light source

A peripheral-free light source, photoelectrochemical technology, applied in the fields of electrochemical variables of materials, scientific instruments, material analysis by electromagnetic means, etc., can solve the problems affecting the convenience of operation, restricting the wide range of applications, etc., and achieve increased luminescence. Intensity, high selectivity detection, easy operation effect

Inactive Publication Date: 2016-07-20
UNIV OF JINAN
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  • Summary
  • 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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  • Production method and application of hydrogen peroxide photoelectrochemistry sensor without peripheral light source

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 A hydrogen peroxide photoelectrochemical sensor without an external light source, the specific preparation steps are:

[0035] (1) Preparation of electrochemiluminescence working electrode W1:

[0036] 1) Use ITO conductive glass as the working electrode, and drop-coat AuAg on the surface of the electrode 2 SNRs, covering an area of ​​1cm×1cm, dried at room temperature;

[0037] 2) Immerse the working electrode obtained in 1) into the electrolyte, and the immersion area is AuAg 2The area covered by SNRs 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;

[0038] The AuAg 2 SNRs is an aqueous solution of rod-shaped nanomaterials with a core-shell structure. The rod-shaped nanomaterials with a core-shell structure are rod-shaped nanomaterials with...

Embodiment 2

[0053] Embodiment 2 A hydrogen peroxide photoelectrochemical sensor without an external light source, the specific preparation steps are:

[0054] (1) Preparation of electrochemiluminescence working electrode W1:

[0055] The preparation steps are the same as those of W1 in Example 1, except that the length of the gold nanorods is 30nm, the concentration of luminol in the electrolyte is 5mmol / L, the concentration of sulfuric acid is 0.5mol / L, and the cyclic voltammetry is carried out During electrochemical deposition, cycle 25 times.

[0056] (2) Preparation of photoelectrochemical working electrode W2:

[0057] 1) Using ITO conductive glass as the working electrode, drop-coat 10 μL TiO on the surface of the electrode 2 NSs, dry at room temperature;

[0058] 2) Put the working electrode obtained in 1) into a muffle furnace, perform annealing treatment at 450°C, and cool to room temperature after treatment;

[0059] 3) Drop-coat 10 μL of HRP on the surface of the working el...

Embodiment 3

[0063] Embodiment 3 A hydrogen peroxide photoelectrochemical sensor without an external light source, the specific preparation steps are:

[0064] (1) Preparation of electrochemiluminescence working electrode W1:

[0065] The preparation steps are the same as the preparation steps of W1 in Example 1, except that the length of the gold nanorods is 40nm, the concentration of luminol in the electrolyte is 10mmol / L, and the concentration of sulfuric acid is 1.0mol / L, and the cyclic voltammetry is carried out During electrochemical deposition, cycle 30 times.

[0066] (2) Preparation of photoelectrochemical working electrode W2:

[0067] 1) Using ITO conductive glass as the working electrode, drop-coat 12 μL TiO on the surface of the electrode 2 NSs, dry at room temperature;

[0068] 2) Put the working electrode obtained in 1) into a muffle furnace, perform annealing treatment at 450°C, and cool to room temperature after treatment;

[0069] 3) The surface of the working electro...

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Abstract

The invention discloses a production method of a dual-function hydrogen peroxide sensor which is not provided with a peripheral light source and is built based on a functional nanometer material. The produced sensor is simple to operate, convenient to carry, quick to detect, and low in cost, and can be used for quick and acute detection of hydrogen peroxide in the fields of daily production, living and the like.

Description

technical field [0001] The invention relates to a preparation method of a sensor for detecting hydrogen peroxide, and the sensor integrates dual functions of electrochemiluminescence and photoelectrochemistry. It belongs to the field of new nano functional materials and electrochemical biosensing analysis technology. 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 im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/416G01N27/30
CPCG01N27/30G01N27/416
Inventor 张勇吴丹魏贻成李小建杜斌
Owner UNIV OF JINAN
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