Method for preparing parathion sensor based on two-dimensional nano-material construction

A technology of two-dimensional nanomaterials and parathion, which is applied in the analysis of materials, electrochemical variables of materials, and material analysis through electromagnetic means, which can solve the problems of low yield and cumbersome process, and achieve low cost and simple preparation , the effect of convenient operation

Inactive Publication Date: 2016-12-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, most of the synthesis methods are synthesized separately, and then compound the catalyst and the carrier, the process is cumbersome and the yield is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 Co-TiO 2 / MoS 2 preparation of

[0041] (1) Add 0.6 g of molybdenum disulfide powder and 0.2 mmol of cobalt salt to 3 mL of n-butyllithium solution, and stir for 12 hours under nitrogen protection at 60 °C to obtain the reacted solution;

[0042] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 60 °C. After the treatment, wash the treated solution with a non-polar solvent, and dry it in vacuum to obtain cobalt Intercalated molybdenum disulfide nanomaterials;

[0043] (3) Add 500 mg of cobalt-intercalated molybdenum disulfide nanomaterials prepared in step (2) into 5 mL of tetrabutyl titanate, stir for 1 hour, slowly add 0.5 mL of hydrofluoric acid while stirring, and then Reaction in the reactor at 160°C for 18 hours;

[0044] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultrapure water and absolute ethanol, and then vacuum-dried at 50 °...

Embodiment 2

[0049] Example 2 Co-TiO 2 / MoS 2 preparation of

[0050] (1) Add 0.6 g of molybdenum disulfide powder and 1.0 mmol of cobalt salt into 5 mL of n-butyllithium solution, and stir for 24 hours under nitrogen protection at 30 °C to obtain the reacted solution;

[0051] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 30 °C. After the treatment, wash the treated solution with a non-polar solvent, and dry it in vacuum to obtain cobalt Intercalated molybdenum disulfide nanomaterials;

[0052] (3) Add 200 mg of cobalt-intercalated molybdenum disulfide nanomaterials prepared in step (2) into 5 mL of tetrabutyl titanate, stir for 1 hour, then slowly add 0.6 mL of hydrofluoric acid while stirring, and then Reaction in the reactor at 180°C for 20 hours;

[0053] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultrapure water and absolute ethanol, and then vacuum-dried ...

Embodiment 3

[0058] Example 3 Co-TiO 2 / MoS 2 preparation of

[0059] (1) Add 0.6 g of molybdenum disulfide powder and 2.0 mmol of cobalt salt to 10 mL of n-butyllithium solution, and stir for 48 hours under nitrogen protection at 50 °C to obtain the reacted solution;

[0060] (2) Wash the reacted solution in step (1) with a non-polar solvent, and then perform ultrasonic treatment in a water bath at 50 °C. After the treatment, wash the treated solution with a non-polar solvent, and dry it in vacuum to obtain cobalt Intercalated molybdenum disulfide nanomaterials;

[0061] (3) Take 10 mg of cobalt-intercalated molybdenum disulfide nanomaterials prepared in step (2) and add them to 5 mL of tetrabutyl titanate. After stirring for 1 hour, slowly add 0.8 mL of hydrofluoric acid while stirring, and then Reaction in the reactor at 200°C for 24 hours;

[0062] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultrapure water and absolute ethanol, and the...

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Abstract

The invention discloses a method for preparing a parathion sensor based on two-dimensional nano-material construction, and belongs to the technical field of novel functional nano-material and biosensors. According to the method, a novel two-dimensional composite material, namely a cobalt-doped titanium dioxide nano-cube in-situ combined molybdenum disulfide two-dimensional composite material Co-TiO2/MoS2, is prepared firstly, the excellent biocompatibility and large specific surface area of the material are utilized, and a parathion antibody is loaded. When the parathion sensor is used for detecting, hydrogen peroxide catalyzed by cobalt-doped titanium dioxide can generate O2 in-situ, and performs an electrochemical reaction with K2S2O8 in a base solution to generate an electrochemiluminescence signal; and the current intensity is reduced by utilizing the influence of specific quantitative combination of antibody and antigen on electron transmission capacity, and the luminescence intensity is reduced, and the construction of a parathion electrochemiluminescence sensor is detected by adopting an unmarked electrochemiluminescence method.

Description

technical field [0001] The invention relates to a preparation method of an electrochemiluminescent parathion sensor. It belongs to the technical field of new nanometer functional materials and biosensors. Background technique [0002] Parathion is a broad-spectrum highly toxic insecticide, which has contact killing, stomach poisoning and fumigation effects, and can penetrate into plants. Parathion acts quickly on insects and can be used to control cotton, apple, citrus, pear, peach and other fruit tree pests and wheat red spiders. In the soil, parathion can migrate slightly to the deep layer of the soil through the leaching of water. Parathion in the soil can enter the plant through absorption by plant roots. After people eat such plants or plants containing their residues by mistake, parathion can enter the human body through the digestive tract, respiratory tract and intact skin and mucous membranes, causing nausea, vomiting, headache, diarrhea, and general weakness. S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/327
CPCG01N27/26G01N27/327
Inventor 张勇马洪敏杜斌胡丽华庞雪辉
Owner UNIV OF JINAN
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