Sprayed tungsten-doped and undoped bismuth ferrite nanostructured films for reducing and oxidizing gas sensor applications

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Sprayed tungsten-doped and undoped bismuth ferrite nanostructured films for reducing and oxidizing gas sensor applications

Waghmare, Shivaji D.; Jadhav, Vijaykumar V.; Shaikh, Shoyebmohamad F.; Mane, Rajaram S.; Rhee, Jae Hui; O'Dwyer, Colm
Date: 2018-01-04
Copyright: © 2018 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
Copyright information: http://creativecommons.org/licenses/by-nc-nd/4.0/
Related: http://www.sciencedirect.com/science/article/pii/S0924424717317594
Full text restriction information: Access to this article is restricted until 24 months after publication by request of the publisher
Restriction lift date: 2020-01-04
Citation: Waghmare, S. D., Jadhav, V. V., Shaikh, S. F., Mane, R. S., Rhee, J. H. and OʼDwyer, C. (2018) 'Sprayed tungsten-doped and undoped bismuth ferrite nanostructured films for reducing and oxidizing gas sensor applications', Sensors and Actuators A: Physical, 271, pp. 37-43. doi: 10.1016/j.sna.2018.01.008
Published Version: 10.1016/j.sna.2018.01.008

Abstract:

This work reports the chemical spray synthesis of bismuth ferrite (BiFeO3, abbreviated as BFO) and tungsten-doped bismuth ferrite (W-BiFeO3, abbreviated as BWFO) nanostructured films and their nitrogen dioxide (NO2) and hydrogen (H2) gas sensor applications. The influence of tungsten-doping on the structure, morphology, surface area, and the characteristics towards NO2 and H2 gas sensing of BFO has been studied and explored and also compared with pristine BFO. The W-doping in BFO, confirmed by X-ray diffraction, energy dispersive X-ray and Fourier-transform infrared spectroscopy measurements, is proposed to explain the relative improvement in gas sensing performance between BFO and BWFO nanostructured films. At dilute concentration (100 ppm) of NO2 and H2, BWFO displays an enhanced sensitivity over BFO, which is attributed to specific changes in the morphology, structure and surface area.

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© 2018 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. Except where otherwise noted, this item's license is described as © 2018 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
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