Preparation method of photoelectrochemical diethylstilbestrol sensor based on zinc and molybdenum co-doped bismuth vanadate array

A diethylstilbestrol and photoelectrochemical technology is applied in the field of preparation of photoelectrochemical sensors, which can solve the problems of poor charge separation efficiency, charge transfer ability, limitations, etc., and achieve the effects of reducing detection limit, short response time, and improving photogenerated charge separation ability.

Active Publication Date: 2020-01-14
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a photoelectric conversion semiconductor material with excellent performance, bismuth vanadate is widely used in photocatalysis, fuel cells and other fields due to its narrow band gap (2.4 eV), but its poor charge separation efficiency and charge transfer ability limit it. Applications

Method used

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Examples

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Embodiment 1

[0024] A preparation method of a photoelectrochemical diethylstilbestrol sensor based on bismuth vanadate co-doped with zinc and molybdenum, the preparation steps are as follows:

[0025]1. Prepare zinc and molybdenum co-doped bismuth vanadate arrays; the preparation method of zinc and molybdenum co-doped bismuth vanadate is as follows: first, bismuth oxyiodide nanosheets are electrodeposited on indium tin oxide glass, and the specific steps As follows: Dissolve 0.04 mol / L bismuth nitrate in 50 mL 0.4 mol / L potassium iodide solution, adjust the pH of the above solution to 1.4 with concentrated nitric acid, then add 20 mL 0.23 mol / L p-benzoquinone solution dropwise to the above solution, the The solution is used as the electrolytic solution for electrodeposition; the electrodeposition process is carried out in a three-electrode system with indium tin oxide glass as the working electrode, the platinum electrode as the counter electrode, and the silver / silver chloride electrode as...

Embodiment 2

[0033] A method for preparing a photoelectrochemical diethylstilbestrol sensor based on zinc and molybdenum co-doped bismuth vanadate arrays, the preparation steps are as follows:

[0034] 1. Prepare zinc and molybdenum co-doped bismuth vanadate arrays; the preparation method of zinc and molybdenum co-doped bismuth vanadate is as follows: first, bismuth oxyiodide nanosheets are electrodeposited on indium tin oxide glass, and the specific steps As follows: Dissolve 0.05 mol / L bismuth nitrate in 50 mL 0.5 mol / L potassium iodide solution, adjust the pH of the above solution to 1.5 with concentrated nitric acid, then add 20 mL 0.23 mol / L p-benzoquinone solution dropwise to the above solution, the The solution is used as the electrolytic solution for electrodeposition; the electrodeposition process is carried out in a three-electrode system with indium tin oxide glass as the working electrode, the platinum electrode as the counter electrode, and the silver / silver chloride electrode ...

Embodiment 3

[0042] A method for preparing a photoelectrochemical diethylstilbestrol sensor based on zinc and molybdenum co-doped bismuth vanadate arrays, the preparation steps are as follows:

[0043]1. Prepare zinc and molybdenum co-doped bismuth vanadate arrays; the preparation method of zinc and molybdenum co-doped bismuth vanadate is as follows: first, bismuth oxyiodide nanosheets are electrodeposited on indium tin oxide glass, and the specific steps As follows: Dissolve 0.08 mol / L bismuth nitrate in 50 mL 0.8 mol / L potassium iodide solution, adjust the pH of the above solution to 1.7 with concentrated nitric acid, then add 20 mL 0.23 mol / L p-benzoquinone solution dropwise to the above solution, the The solution is used as the electrolytic solution for electrodeposition; the electrodeposition process is carried out in a three-electrode system with indium tin oxide glass as the working electrode, the platinum electrode as the counter electrode, and the silver / silver chloride electrode a...

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Abstract

The invention relates to a preparation method and application of a photoelectrochemical diethylstilbestrol sensor based on a zinc and molybdenum co-doped bismuth vanadate array. The preparation methodspecifically comprises the following steps: taking the zinc and molybdenum co-doped bismuth vanadate array as a substrate material and electrically depositing the zinc and molybdenum co-doped bismuthvanadate array on indium tin oxide conductive glass; the wormlike porous structure of the zinc and molybdenum co-doped bismuth vanadate has a large surface area, so that light capture and biomoleculeloading can be increased; additional electrons can be added due to doping of zinc and molybdenum elements, so the separation efficiency of photo-induced electron holes is promoted; the prepared ferromanganese cyanide compound is a metal inorganic framework material with a catalytic function on hydrogen peroxide, and is used as a competitive marker; based on this, hydrogen peroxide is used as an electron donor in the system, a photoelectrochemical sensor based on a weakened signal competition strategy is constructed, sensitive detection of diethylstilbestrol is realized, and the method is of great significance to early diagnosis and monitoring of autoimmune diseases.

Description

technical field [0001] The invention belongs to the technical fields of nano functional materials, immunoassay and biosensing. Specifically, bismuth vanadate co-doped with zinc and molybdenum is used as a base material, and a gold nanoparticle / manganese ferricyanide compound compound is used as a competitive marker to construct a detection system Preparation method of photoelectrochemical sensor for diethylstilbestrol. Background technique [0002] Diethylstilbestrol is a synthetic estrogen compound widely used in livestock production, aquaculture and clinical drugs to prevent pregnancy complications. Studies have shown that the general population exposed to diethylstilbestrol will increase the risk of autoimmune diseases and cancer. Due to its potential toxicity and stability, it has been identified as an environmentally induced endocrine disruptor. At present, there are many detection methods for diethylstilbestrol, such as enzyme-linked immunosorbent assay, electrochemic...

Claims

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Application Information

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IPC IPC(8): G01N27/26G01N27/30G01N27/327
CPCG01N27/26G01N27/30G01N27/3278
Inventor 钱彦荣魏琴鞠熀先冯金慧任祥王雪莹范大伟
Owner UNIV OF JINAN
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