Abstract
Main purpose of the current work was to study the effect of tin (Sn) addition on the synthesized iron oxide (Fe2O3). The catalytic nature of tin (Sn) can alter the structural, electrical and gas sensing properties of Fe2O3. The hazardous and pollutant gases can be sensed using Sn added Fe2O3 films. The Fe2O3 nanoparticles were synthesized using the co-precipitation method. 1, 3, 5, and 7 wt. % tin was added in iron oxide. The structural parameters of prepared gas sensor films were analyzed using X-Ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and Energy Dispersive X-Ray Analysis (EDX). Williamson Hall plots were used to find out the microstructural parameters of the prepared films. The crystallite size was revealed to be below 10 nm. SEM micrograph revealed agglomerated, spherical, and granular nature with voids. The specific surface area was found to augment with an increase in tin doping. EDX exploration showed that films were non-stoichiometric i.e. oxygen deficient. The gas-sensing performance of the tin-modified Fe2O3 films was tested against pollutant gases like ethanol, ammonia LPG, NO2, and petrol vapors. Excellent relative response and selectivity was recorded in presence of LPG. The Sn added Fe2O3 films performed as an effective LPG gas sensor.
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Acknowledgements
The authors also would like to thank the Department of Chemistry and Department of Physics, MGV’s Arts, Science and Commerce College, Manmad, Nashik, MS, India. The authors would also like to thank the Department of Physics, SICES Degree College, Ambarnath, Thane, MS, India and Thick and thin film laboratory, M.S.G. College, Malegaon, Nashik, Maharashtra, India
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Deshmane, V.V., Shinde, S., Halwar, D.K. et al. Tin Modified Fe2O3 Thick Films for Monitoring Environmental and Industrial Pollutant Gases. Chemistry Africa 5, 1069–1082 (2022). https://doi.org/10.1007/s42250-022-00398-1
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DOI: https://doi.org/10.1007/s42250-022-00398-1