A kind of worm-like tin oxide gas-sensing material and its preparation method and ethanol detection application

A gas-sensitive material, tin oxide technology, applied in tin oxide, nanotechnology for materials and surface science, material resistance, etc., can solve the problems of expensive raw materials, long preparation cycle, and low purity of products, and achieve the preparation method Ease of operation, short response time, and high sensitivity effects
CN113135589BActive Publication Date: 2022-07-19ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2022-07-19

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Abstract

The invention discloses a worm-like tin oxide gas-sensing material, a preparation method thereof, and an ethanol detection application. The main steps are as follows: placing excess tin particles in a reaction solution composed of hydrogen peroxide and nitric acid, and keeping the temperature at 60-90 DEG C for 3-48 hours; The worm-like tin oxide gas-sensing material is obtained after the powder is separated, washed, dried and then heat-treated. The invention is simple and easy to operate, the preparation process is green and pollution-free, and the cost is low. The obtained worm-like tin oxide particles are well dispersed, a single particle is composed of lamellar structures arranged in parallel, and there are nanoscale gaps between the flakes, and the material has Excellent detection of ethanol gas sensing performance.
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Description

technical field

[0001] The invention belongs to the technical field of metal oxide gas sensors, and in particular relates to a worm-like tin oxide gas-sensing material and a preparation method and use thereof. Background technique

[0002] Ethanol, as a colorless, low-toxic and widely used compound, has a wide range of applications in food, biomedicine, and chemical industries. Although low toxicity is not dangerous, long-term exposure to ethanol gas can make people feel dizzy, sleepy, vision impaired, and in severe cases have difficulty breathing. In addition, drunk driving, as one of the important causes of traffic accidents, seriously threatens people's lives and affects social stability and development. As an effective detection tool, the gas sensor can be used to detect the concentration of ethanol in the exhaled breath of the driver, so as to determine whether the driver is drinking and driving.

[0003] Metal oxide semiconductor gas sensors have the advantages of hi...

Claims

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