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Preparation method of titanium alloy substrate composite material with excellent detection performances on hydrogen peroxide

A technology of composite materials and hydrogen peroxide, applied in the field of materials, can solve the problems of detection limit and selectivity that cannot meet the requirements, and achieve the effect of excellent detection performance and excellent conductivity

Active Publication Date: 2019-05-31
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that the sensitivity, detection limit and selectivity of conventional materials for hydrogen peroxide detection cannot meet the requirements, the present invention provides a titanium alloy substrate with excellent detection performance for hydrogen peroxide Preparation method of composite material

Method used

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  • Preparation method of titanium alloy substrate composite material with excellent detection performances on hydrogen peroxide
  • Preparation method of titanium alloy substrate composite material with excellent detection performances on hydrogen peroxide
  • Preparation method of titanium alloy substrate composite material with excellent detection performances on hydrogen peroxide

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preparation example Construction

[0018] A method for preparing a composite material of a titanium alloy substrate having excellent detection performance for hydrogen peroxide, the preparation method comprising the following steps:

[0019] (1) Put the nickel-titanium alloy sheet with an atomic ratio of Ni:Ti=50.8:49.2 into 1-5 M / L hydrochloric acid solution, and ultrasonically clean it for 10-30 minutes;

[0020] (2) Put the potassium hydroxide solution with a concentration of 2 M-9M in a high-pressure reactor, put the cleaned nickel-titanium alloy described in step (1), and put it in an environment of 110-130°C for hydrothermal reaction 1- 6 hours;

[0021] (3) After the reaction is over, wait for the autoclave to cool down to room temperature naturally, take out the nickel-titanium alloy sheet, and clean it thoroughly;

[0022] (4) Dry the cleaned nickel-titanium alloy sheet in a vacuum oven at 30-80°C for 2-6 hours.

[0023] Since the sensitivity, detection limit, and selectivity of conventional material...

Embodiment 1

[0025] A method for preparing a composite material of a titanium alloy substrate having excellent detection performance for hydrogen peroxide, the preparation method comprising the following steps:

[0026] (1) Put a nickel-titanium alloy sheet (atomic ratio: Ni:Ti=50.8:49.2) (size: 4cm×2cm×0.1cm) into 3M / L hydrochloric acid solution, and ultrasonically clean it for 10 minutes;

[0027] (2) Put the potassium hydroxide solution with a concentration of 6 M in the autoclave, put the cleaned nickel-titanium alloy described in step (1), and put it in a 110°C environment for hydrothermal reaction for 2 hours;

[0028] (4) After the reaction is over, wait for the autoclave to cool down to room temperature naturally, take out the nickel-titanium alloy sheet, and rinse it with deionized water and alcohol alternately for 5 times;

[0029] (5) Dry the cleaned nickel-titanium alloy sheet in a vacuum oven at 60°C for 2 hours.

Embodiment 2

[0031] A method for preparing a composite material of a titanium alloy substrate having excellent detection performance for hydrogen peroxide, the preparation method comprising the following steps:

[0032] (1) Put a nickel-titanium alloy sheet with an atomic ratio of Ni:Ti=50.8:49.2 in a 1 M / L hydrochloric acid solution, and ultrasonically clean it for 10 minutes;

[0033] (2) Put a potassium hydroxide solution with a concentration of 2 M in an autoclave, put the cleaned nickel-titanium alloy described in step (1), and put it in a 130°C environment for hydrothermal reaction for 1 hour;

[0034] (3) After the reaction is over, wait for the autoclave to cool down to room temperature naturally, take out the nickel-titanium alloy sheet, and clean it thoroughly;

[0035] (4) Dry the cleaned nickel-titanium alloy sheet in a vacuum oven at 30°C for 2 hours.

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Abstract

The invention relates to the field of materials, and particularly discloses a preparation method of a titanium alloy substrate with excellent detection performances on hydrogen peroxide. According tothe invention, the preparation method adopts KOH solution with a certain concentration, and a nickel-titanium alloy sheet is corroded at a low temperature for a short time in a hydrothermal environment, and the potassium titanate composite material with a sheet-shaped structure and a nickel hydroxide and nanowire structure is directly obtained on the surface of the nickel-titanium alloy sheet. Thepreparation method is simple, and the prepared material Ni(OH)2 / K-Ti-O has high sensitivity, low detection limit and good selectivity on hydrogen peroxide.

Description

technical field [0001] The invention relates to the field of materials, in particular to a method for preparing a titanium alloy substrate composite material with excellent detection performance for hydrogen peroxide. Background technique [0002] Hydrogen peroxide is not only the product of many highly selective oxidase catalyzed reactions, but also an important component in food, medicine, and environmental analysis. Therefore, rapid and accurate detection of hydrogen peroxide is of great significance in the fields of biotechnology, medical diagnosis, and food industry. Among them, the electrochemical biosensor has the advantages of simple operation, low cost, and fast analysis speed, and has been widely used. [0003] The core of electrochemical biosensors is the modified electrode with biorecognition ability. Although enzyme-based electrochemical biosensors have excellent selectivity and high sensitivity, the production process of enzyme-based electrochemical sensors i...

Claims

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Application Information

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IPC IPC(8): G01N27/407
Inventor 董成军陈刚陶友管洪涛
Owner YUNNAN UNIV
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