NDLI: Investigation of the electrical conductivity and optical property of polyaniline-based nanocomposite and its application as an ethanol vapor sensor

Content Provider	Royal Society of Chemistry (RSC)
Author	Khan, Dilwar Alam Akhtar, Arshia Nabi, Syed Ashfaq
Copyright Year	2015
Abstract	Polyaniline–Sn(IV)iodophosphate (PANI–SnIP) nanocomposite cation exchanger was synthesized via the sol–gel approach and its AC and DC electrical conductivity, dielectric properties and optical properties were studied. The characterization of the nanocomposite using FT-IR, UV-Vis spectroscopy, SEM and TEM showed the formation of a nanocomposite with improved physicochemical properties. The AC electrical conductivity was found to increase with the increase in applied frequency and concentration of the Sn(IV)iodophosphate (SnIP) filler content. The optical band gap of the nanocomposite decreased from 3.99 eV for pure polyaniline (PANI) to 3.60 eV for the nanocomposite with 30% SnIP content. The ethanol vapor sensing characteristics were evaluated by the fabrication of a PANI–SnIP nanocomposite as a sensor for ethanol vapor detection. The sensing performance of the nanocomposite was markedly improved with the increase of SnIP concentration. The nanocomposite sensor exhibited a linear response to the variable concentration of ethanol (50, 100, 300, and 500 ppm), a quick response time, and a reproducible and reversible response, which are a clear manifestation of its sensing ability and environmental utility.
Starting Page	3728
Ending Page	3735
Page Count	8
File Format	HTM / HTML PDF
ISSN	11440546
Volume Number	39
Issue Number	5
Journal	New Journal of Chemistry
DOI	10.1039/c4nj02260b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Electrical resistivity and conductivity Ultraviolet\u2013visible spectroscopy Transmission electron microscopy Ethanol Electronvolt Nanocomposite Fourier-transform infrared spectroscopy Band gap Ion exchange Dielectric Polyaniline
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Catalysis

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