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Application and preparation method of deltamethrin photoelectrochemical sensor based on electrochemiluminescence excitation

A deltamethrin, photoelectrochemical technology, applied in scientific instruments, instruments, material analysis by electromagnetic means, etc., can solve problems such as limiting wide application, affecting the convenience of operation, etc., to achieve high selectivity detection, operation The effect of convenience and broad market development prospects

Inactive Publication Date: 2016-07-13
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, since the electrochemiluminescence sensor requires external light signal capture devices such as photodiodes, and the photoelectrochemical sensor requires an external light source to excite the photosensitive material, this affects the convenience of the operation of the two to a certain extent and limits them. Wider application in actual production and life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 A deltamethrin photoelectrochemical sensor based on electrochemiluminescence excitation, the specific preparation steps are:

[0042] (1) Preparation of ECL working electrode W1:

[0043] 1) Use ITO conductive glass as the working electrode, and drop-coat NH on the surface of the electrode 4 NiPO 4 Solution, covering an area of ​​1cm × 1cm, dry at room temperature;

[0044] 2) Apply the working electrode obtained in 1) to the NH 4 NiPO 4 Drop-coat AuNRs on the surface, covering an area of ​​1cm×1cm, and dry at room temperature;

[0045] 3) Immerse the working electrode obtained in 2) into the electrolyte, and the immersion area is NH 4 NiPO 4 The area covered by AuNRs 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;

[0046] The NH 4 NiPO ...

Embodiment 2

[0064] Example 2 A deltamethrin photoelectrochemical sensor based on electrochemiluminescence excitation, the specific preparation steps are:

[0065] (1) Preparation of ECL working electrode W1:

[0066] 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 were 38°C and 12h respectively; the length of gold nanorods was 30nm; the concentration of luminol in the electrolyte was 5mmol / L, and the concentration of sulfuric acid was 0.5mol / L; During deposition, cycle 25 times.

[0067] (2) Preparation of photoelectrochemical working electrode W2:

[0068] 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;

[0069] 2) Put t...

Embodiment 3

[0074] Example 3 A deltamethrin photoelectrochemical sensor based on electrochemiluminescence excitation, the specific preparation steps are:

[0075] (1) Preparation of electrochemiluminescent working electrode W1:

[0076] 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 were 45°C and 14h, respectively; the length of gold nanorods was 40nm; the concentration of luminol in the electrolyte was 10mmol / L, and the concentration of sulfuric acid was 1.0mol / L; During deposition, cycle 30 times.

[0077] (2) Preparation of photoelectrochemical working electrode W2:

[0078] 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 temperatu...

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Abstract

The invention discloses a preparation method of a functional nanomaterial based biological immunosensor with dual signal sending strategies of electrochemiluminescence and photoelectrochemistry.The sensor prepared according to the method has the advantages of simplicity in operation, portability, quickness in detection and low in cost and can be used for rapid and sensitive detection of deltamethrin in fields of daily production, daily life and the like.

Description

technical field [0001] The invention relates to a preparation method of a sensor for detecting deltamethrin. 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] Deltamethrin is one of the most toxic pyrethroid insecticides. Its poisonous effect on pests can reach 100 times that of DDT and 40 times that of parathion. Strong power, no fumigation and systemic effect, it can repel some pests at high concentration, and the duration of effect can reach 7-12 days. Deltamethrin belongs to the poisoning category. Skin contact can cause irritation symptoms and red papules; in acute poisoning, headache, dizziness, nausea, vomiting, loss of appetite, and fatigue may occur in mild cases; fasciculations and convulsions may also occur in severe cases. [0003] At present, the methods for detecting deltamethrin ...

Claims

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Application Information

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IPC IPC(8): G01N27/327
CPCG01N27/3278
Inventor 张勇邓保军吴丹魏琴杜斌
Owner UNIV OF JINAN
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