Raju, AR and Rao, CNR (1994) $Mo0_3/Ti0_2$ and $Bi_2MoO_6$ as ammonia sensors. In: Sensors and Actuators B (Chemical), 21 (1). pp. 23-26.
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Abstract
Ammonia sensors based on catalytic oxides such as $V_2O_5, MoO_3,$ and $\alpha-, \beta-$ and $\gamma$-bismuth molybdates have been investigated. $MoO_3$ (15 mol%) supported on $TiO_2$ and $\gamma-Bi_2MoO_6$ both exhibit satisfactory sensing characteristics for $NH_3$, with a reasonably low working temperature (500-575 K) and a minimum detection limit of 10 ppm. Humidity has no measurable effect on the performance of these materials. FSR studies show the formation of $Mo^{5+}$ species on these oxides on contact with $NH_3$.
Item Type: | Journal Article |
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Publication: | Sensors and Actuators B (Chemical) |
Publisher: | Elsevier. |
Additional Information: | Copyright of this article belongs to Elsevier. |
Keywords: | Ammonia sensors;Bismuth molybdates;Catalytic oxides;Molybdenum;Titanium;Vanadium |
Department/Centre: | Division of Chemical Sciences > Materials Research Centre Division of Chemical Sciences > Solid State & Structural Chemistry Unit |
Date Deposited: | 18 Oct 2006 |
Last Modified: | 19 Sep 2010 04:31 |
URI: | http://eprints.iisc.ac.in/id/eprint/8272 |
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