Nanosized Pt-SnO2 gas sensitive materials for creation of semiconductor sensors to hydrogen

Nanosized materials based on tin dioxide with platinum additives were synthesized to create gas sensitive layers of semiconductor hydrogen sensors. Synthesis of the nanomaterials was carried out by a sol-gel method using ethylene glycol as a solvent. Influence of platinum additives on sensitivities...

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Bibliographic Details
Published in:Molecular Crystals and Liquid Crystals 2021-04, Vol.719 (1), p.61-70
Main Authors: Matushko, I.P., Oleksenko, L.P., Maksymovych, N.P., Lutsenko, L.V., Fedorenko, G.V.
Format: Article
Language:English
Subjects:
Additives
Chemical sensors
Ethylene glycol
Hydrogen
Nanomaterials
Nanotechnology
Oxidation
Platinum
Recovery time
Response time
semiconductor
Sensors
SnO2
Sol-gel processes
Tin dioxide
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Summary:Nanosized materials based on tin dioxide with platinum additives were synthesized to create gas sensitive layers of semiconductor hydrogen sensors. Synthesis of the nanomaterials was carried out by a sol-gel method using ethylene glycol as a solvent. Influence of platinum additives on sensitivities of the obtained sensors to H 2 and catalytic properties of the corresponding Pt-containing sensor nanomaterials in a reaction of H 2 oxidation were studied. It was shown that the sensor properties depended on catalytic processes of H 2 oxidation on the sensor surfaces. The most sensitive hydrogen sensor was obtained by impregnation of SnO 2 with solution of 15.3 × 10 −2  mol×L −1 H 2 PtCl 6 and demonstrated a fast response time (8 s) and quick recovery time (10 s) at the optimal sensor temperature 260 o C.
ISSN:1542-1406
1563-5287
1527-1943
DOI:10.1080/15421406.2020.1862461