Abstract
The current study demonstrates the sensing response of a polyaniline–copper ferrite (PANI-CuFe2O4) nanostructured composite for liquefied petroleum gas (LPG) sensing. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques were used to characterize the PANI and the nanocomposite prepared by chemical polymerization method. At room temperature, a simple LPG sensor with a maximum sensing response of 86% at 764 ppm LPG was fabricated using only spin coated PANI-CuFe2O4 nanocomposite. It is observed that as the gas concentration in parts per million (ppm) increased, the composite's resistance also decreased. Their quick reaction and recovery durations, as well as their sensing performance stability, which are demonstrated their potential candidature for gas sensing applications. To describe how the sensing mechanism works, the p-n hetero-junction barrier produced at the interface of PANI and CuFe2O4 is used.
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Data underlying the results presented in this paper are not publicly available at the time of publication, which may be obtained from the authors upon reasonable request.
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SK and AR are responsible for the designing of the work, prepared the materials and completed the initial drafting of the manuscript. AP and AM are contributed in the characterizations and analysis of the composite data. NB is contributed in the final drafting, editing and analyzing the spectra.
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Kotresh, S., Roy, A., Parveen, A. et al. Fabrication of low-cost p-n heterostructure room temperature LPG sensing properties of Polyaniline–Copper ferrite composite. J Mater Sci: Mater Electron 34, 218 (2023). https://doi.org/10.1007/s10854-022-09662-z
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DOI: https://doi.org/10.1007/s10854-022-09662-z