Liquefied Petroleum Gas Sensing of Polyaniline-Titanium Dioxide Nanocomposites

Parveen, Ameena and Koppalkar, Anilkumar and Roy, Aashis S (2013) Liquefied Petroleum Gas Sensing of Polyaniline-Titanium Dioxide Nanocomposites. In: SENSOR LETTERS, 11 (2). pp. 242-248.

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Abstract

Polyaniline/titaniurn dioxide nanocomposites were prepared using alpha-dextrose as surfactant and ammonium persulphate as an oxidant. The PANI/TiO2 nanocomposite is characterized by FTIR, XRD and TEM. The FTIR spectra revel that the presence of characteristic peaks of benzenoid, qunoide rings and metal-oxygen stretching. The XRD studies show the monoclinic structure of the nanocomposites. The TEM study shows that the size of TiO2 is in the order of 9 nm where as the composite size is of the order of 13 nm and further it was observed that the TiO2 particles are intercalated to form a core shell of PANI. The maximum sensing response for LPG is found to be 90% for 30 wt.% of PANI/TiO2 nanocomposites at 400 ppm whereas for Benzene and Toluene it is negligibly small (<= 20%) and for the cyclohexane sensing response it is around 30% for different wt.%.

Item Type:	Journal Article
Publication:	SENSOR LETTERS
Publisher:	AMER SCIENTIFIC PUBLISHERS
Additional Information:	Copyright of this article is belongs AMER SCIENTIFIC PUBLISHERS
Keywords:	Polyaniline; Titanium Dioxide; alpha-Dextrose; Liquefied Petroleum Gas; Selectivity; Sensitivity
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	09 Sep 2013 10:37
Last Modified:	09 Sep 2013 10:37
URI:	http://eprints.iisc.ac.in/id/eprint/47079

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