Tuned sensitivity towards H{sub 2}S and NH{sub 3} with Cu doped barium strontium titanate materials

Journal Article · Wed Nov 05 00:00:00 EST 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4901664· OSTI ID:22390538

Teodorescu, V. S.; Stănoiu, A. ^[1]; Sackmann, A. ^[2]; Ruşti, C. F.; Piticescu, R. M. ^[3]

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1. National Institute of Materials Physics, Atomistilor 105bis, P.O. Box MG-7, 077125, Bucharest-Magurele (Romania)
2. AG Weimar, Institute of Physical and Theoretical Chemistry, University of Tübingen, Auf der Morgenstelle 15, D-72076 Tübingen (Germany)
3. National R and D Institute for Non-ferrous and Rare Metals, 102 Biruintei Blvd, Ilfov (Romania)

The different amount of Cu-doped Barium Strontium Titanate (BST) thick film materials have been tested for their gas-sensing performances towards NH{sub 3} and H{sub 2}S under dry and 50% relative humidity (RH) background conditions. The optimum NH{sub 3} sensitivity was attained with 0.1mol% Cu-doped BST whereas the selective detection of H{sub 2}S was highlighted using 5mol% Cu-doped BST material. No cross-sensitivity effects to CO, NO{sub 2}, CH{sub 4} and SO{sub 2} were observed for all tested materials operated at their optimum temperature (200°C) under humid conditions (50% RH). The presence of humidity clearly enhances the gas sensitivity to NH{sub 3} and H{sub 2}S detection.

• OSTI ID: 22390538
• Journal Information: AIP Conference Proceedings, Vol. 1627, Issue 1; Conference: 14. Electroceramics Conference, Bucharest (Romania), 16-20 Jun 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM COMPOUNDS
CARBON MONOXIDE
COPPER COMPOUNDS
DOPED MATERIALS
HUMIDITY
METHANE
NITROGEN DIOXIDE
PERFORMANCE
SENSITIVITY
STRONTIUM TITANATES
SULFUR DIOXIDE
TEMPERATURE DEPENDENCE