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Isopropanol gas sensor based on CdSnO3 sensitive layer and preparation method of isopropanol gas sensor

A gas sensor and sensitive layer technology, applied in the field of isopropanol gas sensor and its preparation, can solve problems such as environmental pollution, threat to human health, etc., and achieve the effects of improving specific surface area, suitable for mass production, and small device size

Pending Publication Date: 2020-06-05
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once these flammable, explosive, toxic and harmful gases leak, they will not only cause serious pollution to the environment, but also seriously threaten human health.

Method used

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  • Isopropanol gas sensor based on CdSnO3 sensitive layer and preparation method of isopropanol gas sensor
  • Isopropanol gas sensor based on CdSnO3 sensitive layer and preparation method of isopropanol gas sensor
  • Isopropanol gas sensor based on CdSnO3 sensitive layer and preparation method of isopropanol gas sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] First, use acetone and ethanol cotton balls to wipe the Al electrode with a width of 3 mm and a length of 4 mm and a Pd metal interdigitated electrode prepared by screen printing technology. 2 o 3 The substrate is clean, and then the Al with Pd metal interdigitated electrodes 2 o 3 The substrate was placed in acetone, ethanol and deionized water in turn, ultrasonically cleaned for 5 minutes respectively, and finally dried at 100°C for later use.

[0041] Among them, the use of screen printing technology in Al 2 o 3 Prepare Pd metal finger electrodes on the substrate, according to the mass ratio of ink [Jiahua JX07500487]:Pd powder:diluent is 1:1:2, stir to make a paste; then inject the paste into the On the screen plate of the finger electrode pattern, scrape the paste under the conditions of an inclination angle of 30° and a pressure of 5 Newtons, in Al 2 o 3 The electrode is printed on the substrate and dried, and the preparation of the Pd metal interdigitated e...

Embodiment 2

[0050] First, use acetone and ethanol cotton balls to wipe the Al electrode with a width of 3 mm and a length of 4 mm and a Pd metal interdigitated electrode prepared by screen printing technology. 2 o 3 The substrate is clean, and then the Al with Pd metal interdigitated electrodes 2 o 3 The substrate was placed in acetone, ethanol and deionized water in turn, ultrasonically cleaned for 5 minutes respectively, and finally dried at 100°C for later use.

[0051] Among them, the use of screen printing technology in Al 2 o 3 Prepare Pd metal finger electrodes on the substrate, according to the mass ratio of ink [Jiahua JX07500487]:Pd powder:diluent is 1:1:2, stir to make a paste; then inject the paste into the On the screen plate of the finger electrode pattern, scrape the paste under the conditions of an inclination angle of 45° and a pressure of 5 Newtons, in Al 2 o 3 The electrode is printed on the substrate and dried, and the preparation of the Pd metal interdigitated e...

Embodiment 3

[0060] First, use acetone and ethanol cotton balls to wipe the Al electrode with a width of 3 mm and a length of 4 mm and a Pd metal interdigitated electrode prepared by screen printing technology. 2 o 3 The substrate is clean, and then the Al with Pd metal interdigitated electrodes 2 o 3 The substrate was placed in acetone, ethanol and deionized water in turn, ultrasonically cleaned for 5 minutes respectively, and finally dried at 100°C for later use.

[0061] Among them, the use of screen printing technology in Al 2 o 3 Prepare Pd metal finger electrodes on the substrate, according to the mass ratio of ink [Jiahua JX07500487]:Pd powder:diluent is 1:1:2, stir to make a paste; then inject the paste into the On the screen plate of the finger electrode pattern, scrape the paste under the conditions of an inclination angle of 30° and a pressure of 10 Newtons, in Al 2 o 3 The electrode is printed on the substrate and dried, and the preparation of the Pd metal interdigitated ...

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Abstract

The invention discloses an isopropanol gas sensor based on CdS quantum dot modified CdSnO3 nanoparticles with porous cubic structure as a sensitive layer and a preparation method of the isopropanol gas sensor, and belongs to the technical field of gas sensors. The sensor is composed of an Al2O3 substrate with a Pd metal interdigital electrode and a CdS quantum dot modified CdSnO3 nanoparticle sensitive layer with a porous cubic structure, which is prepared on the Pd metal interdigital electrode and the Al2O3 substrate by adopting a coating technology, in sequence from bottom to top, accordingto the invention, CdS quantum dot modified CdSnO3 nanoparticles with a porous cubic structure are used as a sensitive material, so that the advantages of surface dangling bonds of amorphous CdSnO3 nanoparticles are applied, and the large specific surface area of quantum dots can be effectively utilized to improve the gas-sensitive response. Meanwhile, the process adopted by the invention is simple, and the prepared device is small in size and suitable for mass production, so that the sensor and the method have important application value.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to a porous cubic structure CdSnO based on CdS quantum dot modification 3 Isopropanol gas sensor with nanoparticles as sensitive layer and preparation method thereof. Background technique [0002] With the rapid development of informatization and digitalization, people are suffering from environmental pollution while enjoying great material wealth. More and more toxic and harmful gases are emitted into the air, such as coal combustion, sulfur dioxide and nitrogen oxides in vehicle exhaust, organic volatile toxic gases benzene, formaldehyde, xylene released from building materials, and emissions from chemical production flammable and explosive gases ethanol, hydrogen, isopropanol, etc. Once these flammable, explosive, toxic and harmful gases leak, they will not only cause serious pollution to the environment, but also seriously threaten human health. Therefore, for the conside...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 阮圣平尹延洋刘彩霞周敬然李昕
Owner JILIN UNIV