High-sensitivity hydrocarbon sensors based on tungsten oxide nanowires

Rout, Chandra Sekhar; Govindaraj, A; Rao, C N R

dc.contributor.author	Rout, Chandra Sekhar
dc.contributor.author	Govindaraj, A
dc.contributor.author	Rao, C N R
dc.date.accessioned	2012-02-08T08:46:08Z
dc.date.available	2012-02-08T08:46:08Z
dc.date.issued	2006
dc.identifier	0959-9428	en_US
dc.identifier.citation	Journal of Materials Chemistry 16(40), 3936–3941 (2006)	en_US
dc.identifier.uri	https://libjncir.jncasr.ac.in/xmlui/10572/345
dc.description.abstract	Hydrocarbon (LPG) sensors based on the nanostructures of V2O5 do not exhibit satisfactory characteristics, while sensors based on WO2.72 nanowires show high sensitivity ( similar to 1800) for 2000 ppm of LPG at 200 degrees C as well as relatively short recovery and response times. Impregnation of WO2.72 nanowires with Pt in the 0.1 - 1.0 at% range, significantly improves the sensor characteristics, the sensitivity increasing with Pt concentration and reaching a value of similar to 10(6) for 2000 ppm of LPG in the 100 - 200 degrees C range with 1 at% Pt. The sensitivity remains high even for 50 ppm of LPG, and is not affected significantly by repeated cycles or humidity. The mechanism of sensing of hydrocarbons by WO2.72 nanowires is explained on the basis of adsorbed oxygen species.	en_US
dc.description.uri	http://dx.doi.org/10.1039/b607012b	en_US
dc.language.iso	en	en_US
dc.publisher	Royal Society of Chemistry	en_US
dc.rights	© 2006 The Royal Society of Chemistry	en_US
dc.subject	Gas Sensing Characteristics	en_US
dc.subject	Raman-Spectroscopy	en_US
dc.subject	Doped Sno2	en_US
dc.subject	Lpg	en_US
dc.title	High-sensitivity hydrocarbon sensors based on tungsten oxide nanowires	en_US
dc.type	Article	en_US