Acetone sensor, preparation method and acetone detection method

A detection method and sensor technology, applied in the fields of acetone sensor, acetone detection, and preparation, can solve problems such as unfavorable wide application, complex synthesis process of hierarchical structure, etc., and achieve the effects of obvious flower-like structure, excellent gas-sensing characteristics, and improved sensitivity

Inactive Publication Date: 2021-04-16
XIDIAN UNIV
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Problems solved by technology

However, the synthesis process of the hierarchical structure in the current report

Method used

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  • Acetone sensor, preparation method and acetone detection method
  • Acetone sensor, preparation method and acetone detection method
  • Acetone sensor, preparation method and acetone detection method

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preparation example Construction

[0047] Such as figure 1 Shown, the preparation method of the acetone sensor provided by the invention comprises the following steps:

[0048] S101: Synthesis of okra-like Co 3 o 4 Material;

[0049] S102: Coating materials, assembling, and welding according to the side-heating device process based on okra-like Co 3 o 4 Preparation of the sensor.

[0050] Okra-like Co of the present invention 3 o 4 The contents of the chemical reagents in the preparation process of the gas-sensitive material are respectively 0.6-1.6 g of cobalt nitrate; 15-33 mL of ethanol / water mixed solution; and 0.5-3 g of ammonium fluoride.

[0051] Those of ordinary skill in the industry can also adopt other steps to implement the preparation method of the acetone sensor provided by the invention, figure 1 The preparation method of the acetone sensor provided by the present invention is only a specific embodiment.

[0052] The okra-like Co provided by the embodiment of the present invention 3 o ...

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Abstract

The invention belongs to the technical field of gas sensor preparation, and discloses an acetone sensor, a preparation method and an acetone detection method. Cobalt nitrate is used as a metal salt, an ethanol/water mixed solution is used as a solvent, ammonium fluoride is used as a surfactant, and an okra-shaped Co3O4 material is successfully prepared through a one-step chemical hydrothermal method; and materials are coated according to a side-heating device process, assembling and welding are carried out to finish the preparation of the okra-shaped Co3O4 sensor. The Co3O4 gas sensitive material is successfully synthesized through a one-step hydrothermal method. The synthesis method is simple and low in cost. According to the invention, a one-step hydrothermal method is adopted, ammonium fluoride is used as a structure-directing agent, the composition of the solvent is changed, the construction of a hierarchical structure is successfully achieved, the synthesis method is simple, and the cost is low. The acetone sensor has excellent gas sensitivity, the sensitivity is 35.2, the optimal working temperature is 150 DEG C, and effective detection of acetone in a low-temperature and high-humidity environment is achieved.

Description

technical field [0001] The invention belongs to the technical field of gas sensor preparation, and in particular relates to an acetone sensor, a preparation method and an acetone detection method. Background technique [0002] Currently: acetone (acetone, C 3 h 6 O), also known as dimethyl ketone and wood ketone, is a representative volatile organic compound, colorless and transparent, and has an aromatic smell. Widely used in factories and laboratories as raw materials for organic synthesis, organic solvents, cleaning agents, etc. But acetone is highly toxic. When the acetone concentration is higher than 173ppm, people's eyes, nose and central nervous system may be damaged, resulting in dizziness and decreased physical strength. Additionally, diabetes can be diagnosed by analyzing the amount of acetone in a person's breath. As a component of human exhaled breath, the concentration of acetone in diabetic patients can reach up to 1800ppb, which is much higher than the co...

Claims

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Application Information

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IPC IPC(8): G01N27/12C01G51/04
Inventor 程鹏飞党凡王莹麟王懿琳张华高建宁
Owner XIDIAN UNIV
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