Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 133, Issue 2, Pages 449-455Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2008.03.004
Keywords
nanosized CuNb2O6; gas sensor; LPG; H-2; NH3
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Appreciable changes in resistance of polycrystalline nanosized CuNb2O6 upon exposure to reducing gases like hydrogen, liquefied petroleum gas (LPG) and ammonia in ambient atmosphere recognize the material as a gas sensor. Nanosized CuNb2O6 synthesized by thermal decomposition of an aqueous pre-cursor Solution containing copper nitrate, niobium tartrate and tri-ethanol amine (TEA), followed by calcination at 700 degrees C for 2h, has been characterized using X-ray diffraction (XRD) study, transmission electron microscopy (TEM), field-emission scanning electron microscope (FESEM), energy dispersive X-ray (EDX) analysis and Brunauer-Emmett-Teller (BET) surface area measurement. The synthesized CuNb2O6 exhibits monoclinic structure with crystallite size of 25 nm, average particle size of 25-40 nm and specific Surface area of 55 m(2) g(-1). (C) 2008 Elsevier B.V. All rights reserved.
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