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Acetone sensor, preparation method and application

A sensor and gas sensor technology, applied in the field of gas sensor preparation, can solve the problems of cumbersome synthesis process and high template cost, and achieve the effects of improving specific surface area and sensitivity, avoiding template cost, and excellent sensitivity characteristics

Pending Publication Date: 2022-04-22
XIDIAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The significance of solving the above problems and defects is: to solve the problems of high template cost, cumbersome synthesis process, and harsh chemical etching or pyrolysis required for the removal process in the hollow structure synthesis process.

Method used

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  • Acetone sensor, preparation method and application
  • Acetone sensor, preparation method and application
  • Acetone sensor, preparation method and application

Examples

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preparation example Construction

[0043] Such as figure 1 As shown, the preparation method of the acetone sensor provided by the embodiment of the present invention comprises the following steps:

[0044] S101, using zinc nitrate and iron nitrate as metal salts, deionized water as solvent, NaCl directly as a structural template, and adjusting ZnFe by controlling the content of NaCl 2 o 4 shape and structure;

[0045] S102, Synthesis of ZnFe by one-step chemical vapor deposition 2 o 4 Solid and pleated hollow microsphere materials;

[0046] S103, obtained based on ZnFe 2 o 4 Gas sensors of solid and pleated hollow microsphere materials.

Embodiment 1

[0049] The preparation method and application of the acetone sensor based on the green NaCl template provided by the embodiment of the present invention include the following steps:

[0050] (1) Zinc nitrate and ferric nitrate are used as metal salts, deionized water is used as solvent, and NaCl is directly used as a green, pollution-free and easy-to-remove structural template, and the ZnFe is effectively adjusted by controlling the content of NaCl. 2 o 4 shape and structure;

[0051] (2) Synthesize ZnFe with ZnFe by one-step chemical vapor deposition 2 o 4 Solid and pleated hollow microsphere materials;

[0052] (3) Obtained based on ZnFe 2 o 4 Gas sensors of solid and wrinkled hollow microsphere materials and their application to acetone detection.

[0053] ZnFe of the present invention 2 o 4 The content of chemical reagents in the preparation process of the wrinkled hollow microsphere gas-sensing material is 3mmol and 6mmol of zinc nitrate and ferric nitrate respect...

Embodiment 2

[0071] The preparation method and application of the acetone sensor based on the green NaCl template provided by the embodiment of the present invention include the following steps:

[0072] (1) Zinc nitrate and ferric nitrate are used as metal salts, deionized water is used as solvent, NaCl is directly used as a green, pollution-free and easy-to-remove structural template, and ZnFe is effectively regulated by controlling the content of NaCl. 2 o 4 shape and structure;

[0073] (2) Synthesize ZnFe with ZnFe by one-step chemical vapor deposition 2 o 4 Solid and pleated hollow microsphere materials;

[0074] (3) Obtained based on ZnFe 2 o 4 Gas sensors of solid and wrinkled hollow microsphere materials and their application to acetone detection.

[0075] ZnFe of the present invention 2 o 4 The content of chemical reagents in the preparation process of the solid microsphere gas-sensing material is 3mmol and 6mmol of zinc nitrate and ferric nitrate respectively; the conten...

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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 application, the preparation method of the acetone sensor comprises the following steps: taking zinc nitrate and ferric nitrate as metal salts, deionized water as a solvent and NaCl as a structure template directly, and adjusting the morphology and structure of ZnFe2O4 by controlling the content of NaCl; znFe2O4 solid and folded hollow microsphere materials are synthesized through a one-step chemical vapor deposition method; the gas sensor based on the ZnFe2O4 solid and folded hollow microsphere material is obtained. The green template chlorine used in the invention has the advantages of good thermal stability, no pollution, easy removal without any strict chemical ablation, no chemical reaction and the like, and avoids the problems of high template cost, tedious synthesis process, harsh chemical etching or pyrolysis involved in the removal process and the like in the conventional method; the synthesized sensitive material is high in specific surface area and sensitivity, and effective detection of acetone can be realized.

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 application. Background technique [0002] Currently, acetone (acetone, C 3 h 6 O), is a representative flammable and volatile organic compound. Acetone is mainly used as a solvent in explosives, grease, spray paint and other industries in industry, and is also widely used in laboratories as organic synthesis raw materials, organic solvents, etc. At the same time, acetone is also a highly toxic organic compound. When exposed to high concentrations of acetone for a long time, it may cause headaches, bronchitis, central nervous system damage and other health problems. At the same time, acetone is also a breath biomarker of patients with type 1 diabetes. The concentration of acetone in patients with type 1 diabetes exceeds 1.8 ppm, while the concentration of acetone in the breath of healthy people is only 0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 程鹏飞吕丽王莹麟郝熙冬孙善富雷朝晖孙国盼陈思甜
Owner XIDIAN UNIV
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