Mahapatra, Preeti Lata and Das, Sagnik and Keasberry, Natasha Ann and Ibrahim, Suriani Binti and Saha, Debdulal (2023) Copper ferrite inverse spinel-based highly sensitive and selective chemiresistive gas sensor for the detection of formalin adulteration in fish. Journal of Alloys and Compounds, 960. Art No-170792. ISSN 0925-8388

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The unexpected presence of food preservatives such as formalin in food can cause significant health hazards e.g., severe damage to the pulmonary and nervous system, kidney, lungs, eyes, etc. In this work, semi-conducting Copper ferrite (CuFe2O4) inverse spinel nanoparticles-based gas sensor for the detection of formalin adulteration in fish has been reported. The nanopowder was synthesized by a simple sol-gel route. The nanopowder was characterized by multiple sophisticated techniques, viz., XRD, XPS, FESEM, TEM, EDS, UV-Vis spectroscopy, laser diffraction-based particle size distribution measurement, current-Voltage (I-V) measurement, infra-red imaging, and non-contact optical profilometry. The developed sensor exhibits high p-type sensitivity towards trace formalin gas (5-30 ppm), rapid response (-2.7 s) and recovery times (-34 s), and appreciable selectivity with respect to other gases in trace concentrations, such as acetone, ethanol etc., and saturated moisture at moderate operating temperature (260 & DEG;C). The excellent long-term stability of the sensor for at least 6 months renders it suitable for commercial applications. & COPY; 2023 Elsevier B.V. All rights reserved.

Item Type: Article
Subjects: Electronics
Depositing User: Bidhan Chaudhuri
Date Deposited: 13 Oct 2023 08:29
Last Modified: 13 Oct 2023 08:29

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