GAS SENSING STRUCTURE AND METHOD OF FABRICATION THEREOF

The present disclosure relates generally to the field of gas detection, and particularly to a gas sensing structure that is suitable for detection of gases (especially, formaldehyde) in the air. The gas sensing structure comprises a carbon nanotube (CNT) film, an n-type or p-type transition metal ox...

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Main Authors PIKHLETSKY, Mikhail Viktorovich, NASIBULIN, Albert Galiyevich, QIU, Chen, FEDOROV, Fedor Sergeevich, AINUL, Yaqin, GARTSEEV, Ilya Borisovich, LI, Hang
Format Patent
LanguageEnglish
French
German
Published 03.05.2023
Subjects
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:The present disclosure relates generally to the field of gas detection, and particularly to a gas sensing structure that is suitable for detection of gases (especially, formaldehyde) in the air. The gas sensing structure comprises a carbon nanotube (CNT) film, an n-type or p-type transition metal oxide (TMO) layer deposited on the CNT film, and noble metal nanoparticles deposited on the TMO layer. The gas sensing structure is characterized by high sensitivity. For example, it is susceptible to changes of formaldehyde concentration in the air at levels starting from few ppb to few tens of ppb. Moreover, a gas sensor based on the gas sensing structure is portable, stable, reversible, has a low power consumption, and its response time may be as good as 1-10 s. To provide the possibility of detecting different gases in the air, a multi-sensor approach based on a pattern recognition algorithm is also disclosed.
Bibliography:Application Number: EP20200776248