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Preparation method of electrochemical sensor based on loaded bi-metal co-doped nano composite material

A nano-composite material and co-doping technology, which is applied in the field of preparation of electrochemical sensors, can solve the problems of cumbersome process, low yield and the like, and achieve the effects of simple preparation, low cost, and increased electron transfer capability.

Inactive Publication Date: 2016-10-26
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

[0039] Example 1 FeCo-TiO 2 / MoS 2 preparation of

[0040] (1) Add 0.6 g of molybdenum disulfide powder, 0.2 mmol of iron salt and 0.2 mmol of cobalt salt into 3 mL of n-butyllithium solution, and stir for 12 hours under nitrogen protection at 60 °C to obtain the reacted solution;

[0041] (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 iron , Molybdenum disulfide nanomaterials co-intercalated with cobalt;

[0042] (3) Add 500 mg of molybdenum disulfide nanomaterials co-intercalated with iron and cobalt prepared in step (2) into 5 mL of tetrabutyl titanate, stir for 1 hour, then slowly add 0.5 mL of hydrofluoric acid while stirring acid, then reacted in a reactor at 160°C for 18 hours;

[0043] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultra...

Embodiment 2

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

[0050] (1) Add 0.6 g of molybdenum disulfide powder, 1.0 mmol of iron salt 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 iron , Molybdenum disulfide nanomaterials co-intercalated with cobalt;

[0052] (3) Add 200 mg of molybdenum disulfide nanomaterials co-intercalated with iron and cobalt 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 acid, then reacted in a reactor at 180°C for 20 hours;

[0053] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultra...

Embodiment 3

[0059] Example 3 FeCo-TiO 2 / MoS 2 preparation of

[0060] (1) Add 0.6 g of molybdenum disulfide powder, 2.0 mmol of iron salt and 2.0 mmol of cobalt salt into 10 mL of n-butyllithium solution, and stir for 48 hours under nitrogen protection at 50 °C to obtain the reacted solution;

[0061] (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 iron , Molybdenum disulfide nanomaterials co-intercalated with cobalt;

[0062] (3) Add 10 mg of molybdenum disulfide nanomaterials co-intercalated with iron and cobalt prepared in step (2) into 5 mL of tetrabutyl titanate, stir for 1 hour, then slowly add 0.8 mL of hydrofluoric acid while stirring acid, then reacted in a reactor at 200°C for 24 hours;

[0063] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultra...

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Abstract

The invention discloses a preparation method of an electrochemical sensor constructed on the basis of a nano functional material and belongs to the technical field of novel nano functional materials and biosensors. The preparation method includes: preparing a novel two-dimensional nano electrode material-the loaded bi-metal co-doped nano composite material FeCo-TiO2 / MoS2, namely a two-dimensional nano composite material with an iron-cobalt co-doped titanium dioxide nano square block composited with molybdenum disulfide in situ; utilizing high biocompatibility and large specific surface area of the material to load a clenbuterol antibody; during detection, due to the fact that iron-cobalt co-doped titanium dioxide can catalyze hydrogen peroxide to generate O2 in situ to generate electrochemical signals, utilizing influence of specific quantitative combining of the antibody and antigen on electron transmission capability to correspondingly lower current strength; finally realizing construction of a biosensor adopting a mark-free electrochemical method to detect clenbuterol.

Description

technical field [0001] The invention relates to a preparation method of an electrochemical sensor constructed on the basis of nano functional materials. It belongs to the technical field of new nanometer functional materials and biosensors. Background technique [0002] Clenbuterol, that is, clenbuterol hydrochloride, can significantly improve the lean meat percentage, weight gain and improve feed conversion ratio. Therefore, it is also called lean meat powder in China, and it has been used as a growth promoter and feed additive for cattle, sheep, poultry, pigs and other livestock and poultry. However, because clenbuterol is too harmful to human health and poses safety hazards, it has been banned globally. [0003] At present, the methods for detecting clenbuterol mainly include chromatography and mass spectrometry. Such methods require expensive instruments and complex operations, and laboratory personnel need professional training before they can perform detection. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327
CPCG01N27/327
Inventor 张勇吴丹李燕范大伟魏琴
Owner UNIV OF JINAN
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