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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 ineffective control of the cavity structure, time-consuming and uneconomical manufacturing process, unfavorable wide application, etc., to achieve improved sensitivity, excellent gas-sensing characteristics, and excellent activity Effect

Pending Publication Date: 2022-01-07
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis process of the multi-cavity structure in the current report is complicated, and the formation of the cavity structure in the reaction process cannot be effectively controlled. The manufacturing process is time-consuming and uneconomical, which is not conducive to wide application, and further improvement is needed.

Method used

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

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Embodiment 1

[0048] 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:

[0049] S101, zinc nitrate, copper nitrate and iron nitrate are used as metal salts, deionized water is used as solvent, salt template NaCl is directly used as porogen, and carbon source dextrin is used as structural carrier;

[0050] S102, Synthesis of spinel MFe with multi-cavity structure by one-step chemical vapor deposition 2 o 4 Microsphere material; Wherein, the spinel MFe 2 o 4 Including M=Zn and Cu;

[0051] S103, use the side-heating device, apply sensitive materials according to the process of the side-heating device, assemble and weld, and finally obtain the spinel MFe based on the multi-cavity structure 2 o 4 (M=Zn and Cu) gas sensor and its application to acetone detection.

[0052] Multi-cavity spinel MFe of the present invention 2 o 4 (M=Zn and Cu) The contents of the chemical reagents in the...

Embodiment 2

[0073] 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:

[0074] S101, zinc nitrate, copper nitrate and iron nitrate are used as metal salts, deionized water is used as solvent, salt template NaCl is directly used as porogen, and carbon source dextrin is used as structural carrier;

[0075] S102, Synthesis of spinel MFe with multi-cavity structure by one-step chemical vapor deposition 2 o 4 Microsphere material; Wherein, the spinel MFe 2 o 4 Including M=Zn and Cu;

[0076] S103, use the side-heating device, apply sensitive materials according to the process of the side-heating device, assemble and weld, and finally obtain the spinel MFe based on the multi-cavity structure 2 o 4 (M=Zn and Cu) gas sensor and its application to acetone detection.

[0077] Multi-cavity spinel MFe of the present invention 2 o 4 (M=Zn and Cu) The contents of the chemical reagents in the...

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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: zinc nitrate, copper nitrate and ferric nitrate are used as metal salts, deionized water is used as a solvent, a salt template NaCl is directly used as a pore-foaming agent, and a carbon source dextrin is used as a structural carrier; a spinel MFe2O4 (M = Zn and Cu) microsphere material with a multi-cavity structure is synthesized through a one-step chemical vapor deposition method; gas sensors are obtained using indirectly heated devices and applied to acetone detection. The synthesis method disclosed by the invention is simple and easy to implement, low in cost, good in dispersity, obvious in multi-cavity structure and excellent in gas-sensitive characteristic. When M is equal to Zn and Cu, the response values of ZnFe2O4 and CuFe2O4 to 100 ppm acetone are 25 and 8.6 respectively, and the optimal working temperatures are 250 DEG C and 200 DEG C respectively. Due to rich elements and excellent activity, the iron-containing spinel oxide is expected to become a promising gas sensor sensing material.

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 the simplest saturated ketone, and is also a representative flammable and volatile organic compound. It is colorless and transparent, and has an aromatic smell and a special spicy smell. It is easily soluble in water and organic solvents such as methanol, ethanol, ether, chloroform, pyridine, etc., and its chemical properties are relatively active. Acetone is mainly used as a solvent in industries such as explosives, plastics, rubber, fibers, leather, grease, spray paint, etc. It is also widely used in laboratories as organic synthesis raw materials, organic solvents, cleaning agents, etc. However, acetone is also a highly toxic organic compound. Long-term exposure to acetone can cause many health problems, such as hea...

Claims

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Application Information

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IPC IPC(8): G01N27/12
CPCG01N27/125
Inventor 程鹏飞吕丽王莹麟许录平张悦张耀琼雷朝晖
Owner XIDIAN UNIV
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