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Preparation method and application of hydrogen peroxide sensor based on double functions of electrochemiluminescence and photoelectrochemistry

A photoelectrochemical and electrochemical technology, applied in the fields of chemiluminescence/bioluminescence, electrochemical variables of materials, and analysis by chemical reactions of materials, etc. Achieve high selectivity detection, easy operation, improve detection sensitivity and detection limit effect

Inactive Publication Date: 2016-07-27
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 hydrogen peroxide sensor based on double functions of electrochemiluminescence and photoelectrochemistry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 A hydrogen peroxide sensor based on electrochemiluminescence and photoelectrochemical dual functions, the specific preparation steps are:

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

[0036] 1) Using ITO conductive glass as the working electrode, drop-coat AuPdNRs on the surface of the electrode, covering an area of ​​1cm×1cm, and dry it at room temperature;

[0037] 2) Immerse the working electrode obtained in 1) into the electrolyte, the immersion area is the area covered by AuPdNRs, use the three-electrode system to electrochemically deposit the working electrode, take out the working electrode after deposition, wash with ultrapure water, 4 °C and dry in the dark to prepare the electrochemiluminescent working electrode W1;

[0038] The AuPdNRs is an aqueous solution of a rod-shaped nanomaterial with a core-shell structure. The rod-shaped nanomaterial with a core-shell structure is a rod-shaped nanomaterial with gold nanorods...

Embodiment 2

[0053] Example 2 A hydrogen peroxide sensor based on electrochemiluminescence and photoelectrochemical dual functions, the specific preparation steps are:

[0054] (1) Preparation of electrochemiluminescent 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...

Embodiment 3

[0063] Example 3 A hydrogen peroxide sensor based on electrochemiluminescence and photoelectrochemical dual functions, the specific preparation steps are:

[0064] (1) Preparation of electrochemiluminescent 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 t...

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Abstract

The invention discloses a preparation method of hydrogen peroxide sensor which has electrochemiluminescence and photoelectrochemistry double functions and is constructed on the basis of a functional nano material.The prepared sensor is easy to operate, convenient to carry, rapid in inspection, low in cost and capable of being used for rapid and sensitive detection on hydrogen peroxide in the fields of daily production and life 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): G01N21/76G01N27/30
CPCG01N21/76G01N27/305
Inventor 张勇魏琴王耀光纪磊马洪敏
Owner UNIV OF JINAN
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