Preparation method and application of a deltamethrin photoelectrochemical sensor based on electrochemiluminescence excitation

A technology of deltamethrin and photoelectrochemistry, which is applied in the direction of scientific instruments, instruments, and material analysis through electromagnetic means, can solve the problems of restricting wide application and affecting the convenience of operation, etc., and achieve high selectivity detection and linearity Add, prepare simple effects

Inactive Publication Date: 2018-04-13
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 ​​1 cm × 1 cm, dry at room temperature;

[0044] 2) Apply the working electrode obtained in 1) to the NH 4 NiPO 4 The surface was drop-coated with Au NRs, covering an area of ​​1 cm × 1 cm, and dried 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 Au NRs 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 electrochemiluminescent working electrode W1;

[0046]...

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 0.3 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 length of gold nanorods was 30 nm; the concentration of luminol in the electrolyte was 5 mmol / L, and the concentration of sulfuric acid was 0.5 mol / L; cyclic voltammetry When performing electrochemical deposition, cycle 25 times.

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

[0068] 1) Use ITO conductive glass as the working electrode, drop-coat 10 µL TiO on the surface of the electrode 2 ...

Embodiment 3

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

[0075] (1) Preparation of electrochemiluminescence 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 0.4 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 length of gold nanorods was 40 nm; the concentration of luminol in the electrolyte was 10 mmol / L, and the concentration of sulfuric acid was 1.0 mol / L; cyclic voltammetry When performing electrochemical 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 surf...

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Abstract

The invention discloses a preparation method of a bioimmune sensor with dual signal development strategies of electrochemiluminescence and photoelectrochemistry constructed on the basis of functional nanomaterials. The prepared sensor is simple to operate, easy to carry, fast to detect, and low in cost, and can be used in Rapid and sensitive detection of deltamethrin in daily production and daily life.

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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Patent Type & Authority Patents(China)
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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