Sen, S and Chakraborty, N and Rana, P and Narjinary, M and Mursalin, Sk D and Tripathy, S and Pradhan, D K and Sen, A (2015) Nanocrystalline gallium ferrite: A novel material for sensing very low concentration of alcohol vapour. Ceramics International, 41 (8). pp. 10110-10115. ISSN 0272-8842

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Nanocrystalline orthorhombic gallium ferrite (GFO) has been synthesized by a sol gel method. The synthesized powder has been characterized by TG/DTA, XRD, TEM, FTIR and nitrogen adsorption isotherm. In the present study we report an excellent ethanol vapour sensitivity of nanocrystalline GaFeO3 at concentrations down to 1 ppm making the sensors suitable for application in food industries. Interestingly in contrast to the market available consumers breath analyser based on tin dioxide, GaFeO3-based sensor is immune to moisture (present in breath) and acetone vapour (an interfacing agent for diabetics). Such gallium ferrite based sensors can be used to make potential interference free breath analyser for real-life applications. In addition, such sensors being highly selective and do not show any cross-sensitivity towards moisture, methanol and carbon monoxide like those based on tin dioxide. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

Item Type: Article
Subjects: Electronics
Divisions: Sensor and Actuator
Depositing User: Bidhan Chaudhuri
Date Deposited: 08 Jan 2016 06:27
Last Modified: 08 Jan 2016 06:27

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