Ethyl acetate gas sensor and preparation method thereof

A gas sensor, ethyl acetate technology, applied in instruments, scientific instruments, measuring devices, etc., can solve problems such as environmental pollution, people's health and life threats, and achieve the effects of low cost, fast response and recovery, and good detection performance

Active Publication Date: 2019-05-14
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Once these flammable, explosive, toxic and harmful gases are produced or leaked, they will not ...

Method used

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  • Ethyl acetate gas sensor and preparation method thereof
  • Ethyl acetate gas sensor and preparation method thereof
  • Ethyl acetate gas sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] First, use acetone and ethanol cotton balls to wipe the Al with Pd metal interdigitated electrodes with a width of 3mm and a length of 4mm 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.

[0039] 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, print the electrode and dry it, and complete the preparation of the Pd metal finger electrode after UV curing. Both the finger wid...

Embodiment 2

[0047] First, use acetone and ethanol cotton balls to wipe the Al with Pd metal interdigitated electrodes with a width of 3mm and a length of 4mm 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.

[0048] 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 10 Newtons, print the electrode and dry it, and complete the preparation of the Pd metal finger electrode after ultraviolet curing. Both the ...

Embodiment 3

[0056] First, use acetone and ethanol cotton balls to wipe the Al with Pd metal interdigitated electrodes with a width of 3mm and a length of 4mm 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.

[0057] 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, print the electrode and dry it, and complete the preparation of the Pd metal finger electrode after UV curing. Both the finger wid...

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Abstract

The invention discloses an ethyl acetate gas sensor taking PrFeO3 modified core-shell octahedral structure Fe2O3 nanoparticles as a sensitive layer, and a preparation method of the ethyl acetate gas sensor, and belongs to the technical field of gas sensors. The gas sensor comprises an Al2O3 substrate with a Pd metal interdigital electrode, and the PrFeO3 modified core-shell octahedral structure Fe2O3 nanoparticle sensitive layer prepared by adopting a coating technology on the Pd metal interdigital electrode and the Al2O3 substrate; the particle size of the nanoparticles ranges from 500 nm to700 nm; and a large amount of the PrFeO3 nanoparticles grow on the surface of core-shell octahedral structure Fe2O3. The method is simple and feasible, few in process, low in cost and low in equipmentrequirement; and the prepared ethyl acetate gas sensor is fast in gas sensitive response and suitable for mass production, and has important application values.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, in particular to a PrFeO 3 Modified core-shell octahedral Fe 2 o 3 The invention discloses an ethyl acetate gas sensor with nanoparticles as a sensitive layer and a preparation method thereof. Background technique [0002] With the rapid development of industrialization and modernization, while material wealth is greatly enriched, production safety and environmental problems are becoming increasingly prominent. More and more toxic and harmful gases are emitted into the air, such as carbon monoxide, sulfur dioxide and nitrogen oxides in coal combustion and vehicle exhaust, and organic volatile toxic gases such as benzene, formaldehyde and xylene released from building materials. Once these flammable, explosive, toxic and harmful gases are produced or leaked, they will not only cause serious pollution to the environment, but also pose a threat to people's health and lives. Therefore, for th...

Claims

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Application Information

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IPC IPC(8): G01N27/00
Inventor 阮圣平尹延洋周敬然温善鹏刘彩霞李昕张楠韩静
Owner JILIN UNIV
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