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Preparation method of load type bimetal codoped photosensitizer-based photoelectrochemical chlordimeform sensor

A photoelectrochemical and co-doping technology, applied in the fields of electrochemical variables of materials, scientific instruments, instruments, etc., can solve the problems of low sensitivity of photoelectrochemical sensors, weakened photoelectric signals, unfavorable practical applications, etc., and widen the range of photosensitive wavelengths. , save time, increase the effect of photocatalytic activity

Inactive Publication Date: 2016-12-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In addition, the photogenerated electron-hole pairs of a single titanium dioxide nanomaterial are easy to recombine, which leads to the weakening of the photoelectric signal, and the poor conductivity of titanium dioxide also limits the sensitivity of photoelectrochemical sensors constructed from a single titanium dioxide nanomaterial. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 FeCo-TiO 2 / MoS 2 preparation of

[0043] (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;

[0044] (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;

[0045] (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;

[0046] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultra...

Embodiment 2

[0052] Example 2 FeCo-TiO 2 / MoS 2 preparation of

[0053] (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;

[0054] (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;

[0055] (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;

[0056] (4) The reaction product obtained in step (3) was centrifuged and washed three times with ultra...

Embodiment 3

[0062] Example 3 FeCo-TiO 2 / MoS 2 preparation of

[0063] (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;

[0064] (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;

[0065] (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;

[0066] (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 a photoelectrochemical chlordimeform sensor, belonging to the technical field of novel nanometer functional materials and biological sensors. Firstly, a novel load type bimetal codoped photosensitizer, namely a two-dimensional nanocomposite material FeCo-TiO2 / MoS2 compounded from ferrous-cobalt codoped titanium dioxide nanodiamond with molybdenum disulfide in situ is prepared, and by utilizing the good biocompatibility and large specific surface area of the material, a chlordimeform antibody is loaded and alkaline phosphatase is immobilized; in detection, as the alkaline phosphatase can catalyze L-ascorbic acid-2-trisodium phosphate AAP to generate L-ascorbic acid AA in situ and further provide electron donors for photoelectric detection, the photocurrent intensity is correspondingly reduced by utilizing the influence of specific quantitative binding of the antibody and antigen on the electron transmission capability, and finally the construction of the photoelectric sensor for detecting the chlordimeform by adopting an unmarked photoelectrochemical method can be realized.

Description

technical field [0001] The invention relates to a preparation method of a photoelectrochemical dimeform sensor. It belongs to the technical field of new nanometer functional materials and biosensors. Background technique [0002] Dimeform is a kind of pesticide. In the soil, dimeform can migrate slightly to the deep layer of the soil through the leaching of water. Animals with chronic poisoning of dimeform may experience weight loss, hematocrit, hemoglobin and red blood cell count decrease, white blood cell count increase, etc. According to a 1972 WHO report, long-term exposure to chlordimeform can lead to cancer. [0003] At present, the methods for detecting dimeform 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. Therefore, it is of great significance to develop a chlordimeform sensor with low cost, fast detectio...

Claims

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Application Information

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IPC IPC(8): G01N27/30G01N27/327G01N33/543
CPCG01N27/305G01N27/3278G01N33/54386G01N2430/10
Inventor 张勇吴丹李贺任祥魏琴
Owner UNIV OF JINAN
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