Polyaniline/vanadium pentoxide/lead tetroxide ternary composite for LPG sensing

Shanawad, SS and Sunilkumar, A and Khened, BS and Chethan, B and Prasad, V and Kotresh, MG and Sharanakumar, TM and Veena, VS (2023) Polyaniline/vanadium pentoxide/lead tetroxide ternary composite for LPG sensing. In: Journal of Materials Science: Materials in Electronics, 34 (6).

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Abstract

In the present work, Gas sensing performance of the amalgamated vanadium pentoxide (V2O5) and lead tetroxide (Pb3O4) in proportionate order with 10, 20, 30, 40, and 50 wt in polyaniline (PANI) ternary composites has been studied. For the study, the samples are synthesized by in situ polymerization technique. The synthesized composites were characterized and confirmed using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscope (SEM) studies. Supporting to gas sensing, AC conductive studies are carried out at room temperature in the frequency ranging from 50 to 1 MHz. The PV3 ternary composite (PANI/ V2O5 + Pb3O4—30) has depicted an enhanced conductivity compared to pristine PANI and other ternary composites. The complex plane impedance plots depict good agreement with the conductivity studies. The liquified petroleum gas (LPG) sensing studies are carried out at ambient temperature (29 °C) and at relative humidity of 45. For the study, the film of all the samples is made using spin coating unit. Among PANI and all the ternary composites, PV3 ternary composite has shown a good variation in resistance. This composite has shown a better sensitivity of 97.05 at 25,000 PPMv level. Along with this, the PV3 ternary composite has depicted an appreciable response time of 29.15 s and a recovery time of 35.26 s. The sensing stability of the composite was also tested for 60 days. The detailed LPG sensing mechanism was discussed deliberately. © 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

Item Type:	Journal Article
Publication:	Journal of Materials Science: Materials in Electronics
Publisher:	Springer
Additional Information:	The copyright of this article belongs to Springer.
Keywords:	Chemical detection; Fourier transform infrared spectroscopy; Gas detectors; Lead oxide; Liquefied petroleum gas; Polyaniline; Scanning electron microscopy; Gas sensing; In-situ polymerization; Petroleum gas; Scanning electrons; Sensing performance; Synthesised; Ternary composites; Vanadium pentoxide; X ray scanning; X- ray diffractions; Vanadium pentoxide
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	10 Mar 2023 05:35
Last Modified:	10 Mar 2023 05:35
URI:	https://eprints.iisc.ac.in/id/eprint/80929

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