Preparation method of titanium nitride nanowire/nanotube array integrated electrode for simultaneously detecting dopamine, uric acid and ascorbic acid

A titanium nitride nanometer and nanotube array technology is applied in the field of electrochemistry to achieve the effects of easy material, good repeatability, and simple and controllable process

Inactive Publication Date: 2021-01-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are few reports on the simultaneous det...

Method used

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  • Preparation method of titanium nitride nanowire/nanotube array integrated electrode for simultaneously detecting dopamine, uric acid and ascorbic acid
  • Preparation method of titanium nitride nanowire/nanotube array integrated electrode for simultaneously detecting dopamine, uric acid and ascorbic acid
  • Preparation method of titanium nitride nanowire/nanotube array integrated electrode for simultaneously detecting dopamine, uric acid and ascorbic acid

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preparation example Construction

[0026] see figure 1 A method for preparing a titanium nitride nanowire / nanotube array integrated electrode for simultaneous detection of dopamine, uric acid and ascorbic acid provided by an embodiment of the present invention comprises the following steps:

[0027] Step 1) Polish the titanium sheet with sandpaper until there is no trace, ultrasonicate it in acetone, ethanol, and distilled water for 8-10 minutes, and dry it, wherein, in order to facilitate the final formation of titanium nitride on the surface of the titanium sheet into a nanowire / nanotube array Arrange, paste scotch tape on the side and back of the titanium sheet and package for use.

[0028] Step 2) The packaged titanium sheet is used as an anode, and the platinum sheet is used as a cathode, and the two are inserted in parallel and separated by 2-3 cm into the prepared electrolyte solution for anodic oxidation. The electrolyte is prepared from 90vol% ethylene glycol, 0.5wt% ammonium fluoride and distilled wa...

Embodiment 1

[0036] (1) Grind the titanium sheet with sandpaper until there is no trace, sonicate it in acetone, ethanol, and distilled water for 8 minutes, dry it, and stick transparent tape on the side and back of the titanium sheet for packaging.

[0037] (2) The titanium sheet is used as the anode, and the platinum sheet is used as the cathode, and the two are inserted into the prepared electrolyte (90vol% ethylene glycol, 0.5wt% ammonium fluoride and distilled water) for anodic oxidation in parallel at a distance of 2 cm, and the anodic oxidation voltage is 55V, the oxidation time is 60min. The titanium piece was taken out, rinsed with distilled water and ultrasonicated for 10 s to remove residual fluoride ions.

[0038] (3) Put the anodized titanium sheet in the air and anneal at 400°C for 2.5h to obtain anatase TiO 2 .

[0039] (4) Place the annealed titanium sheet in a chemical vapor deposition instrument, 3 Heat treatment under atmosphere, rising to 300°C at 3°C / min, then risin...

Embodiment 2

[0043] (1) Grind the titanium sheet with sandpaper until there is no trace, sonicate it in acetone, ethanol, and distilled water for 9 minutes, dry it, and stick scotch tape on the side and back of the titanium sheet for packaging.

[0044] (2) The titanium sheet is used as the anode, and the platinum sheet is used as the cathode, and the two are inserted into the prepared electrolyte (90vol% ethylene glycol, 0.5wt% ammonium fluoride and distilled water) for anodic oxidation in parallel and separated by 2.5cm, and the anodic oxidation voltage It is 60V, and the oxidation time is 55min. The titanium piece was taken out, rinsed with distilled water and ultrasonicated for 13 s to remove residual fluoride ions.

[0045] (3) Put the anodized titanium sheet in the air and anneal at 450°C for 2h to obtain anatase TiO 2 .

[0046] (4) Place the annealed titanium sheet in a chemical vapor deposition instrument, 3 Heat treatment under atmosphere, rising to 300°C at 3°C / min, then risi...

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Abstract

The invention provides a preparation method of a titanium nitride nanowire/nanotube array integrated electrode capable of simultaneously detecting dopamine, uric acid and ascorbic acid. The preparation method comprises the following steps: packaging the side surface and the back surface of a pretreated titanium sheet; anodizing the packaged titanium sheet; cleaning and drying the titanium sheet subjected to anodic oxidation; annealing the cleaned and dried titanium sheet to form anatase TiO2 on the surface of the titanium sheet; and carrying out heat treatment on the annealed titanium sheet inan NH3 atmosphere to obtain the titanium nitride nanowire/nanotube array integrated electrode. According to the preparation method of the titanium nitride nanowire/nanotube array integrated electrodefor simultaneously detecting dopamine, uric acid and ascorbic acid provided by the invention, materials are easy to obtain, the process is simple and controllable, lower detection limits can be respectively detected for dopamine and uric acid, and dopamine, uric acid and ascorbic acid can be detected at the same time, so that the good resolution capability is shown.

Description

technical field [0001] The invention relates to the field of electrochemical technology, in particular to a method for preparing a titanium nitride nanowire / nanotube array integrated electrode for simultaneous detection of dopamine, uric acid and ascorbic acid. Background technique [0002] Dopamine (DA) is a very important neurotransmitter located in the central nervous system of the human body. It is mainly responsible for helping cells transmit impulses and can control people’s different emotions. Moderate dopamine can treat depression. The content of dopamine in the human body is generally 0.01-1μmol / L. The content of uric acid (UA) in the human body can reflect the function and metabolism of the body. When the uric acid produced accumulates in the body, it will make the body fluids acidic and cause a series of diseases such as gout. The content of uric acid in the human body is generally 0.2-0.5mmol / L. When the content of ascorbic acid (AA) is insufficient, it can lea...

Claims

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Application Information

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IPC IPC(8): G01N27/327G01N27/48
CPCG01N27/3277G01N27/3278G01N27/48
Inventor 侯新梅郑亚鹏王恩会郭春雨方志
Owner UNIV OF SCI & TECH BEIJING
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