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Gas sensing properties of mixed α Fe2O3-SnO2 nanoparticles prepared under hydrothermal conditions

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4 Author(s)
Tomescu, A. ; National Inst. of Material Phys., Bucharest-Magurele, Romania ; Roescu, R. ; Dumitriu, I. ; Tarabasanu-Mihaila, D.

This paper reports an investigation of the gas-sensitive properties of thick film sensors based on mixed nanosized oxides (1-x)αFe2O3-xSnO2 (x = 0.1-1.0), towards different reducing gases (CH4, CO, H2O). The samples were tested in the range of temperatures (200-400°C). The mixed oxides proved a real sensitivity to CH4 being practically insensitive to detection limit of CO. The maximum response to CH4 takes place at 330°, where the water interference was also studied.

Published in:

Semiconductor Conference, 2004. CAS 2004 Proceedings. 2004 International  (Volume:1 )

Date of Conference:

4-6 Oct. 2004