Solution-based Spin Cast Processed Polypyrrole/Niobium Pentoxide Nanocomposite as Room Temperature Liquefied Petroleum Gas Sensor

In the present work, fabrication of polypyrrole (PPy)/niobium pentoxide (Nb 2 O 5 ) nanocomposite as room temperature liquefied petroleum gas (LPG) sensing device is reported. Nb 2 O 5 nanoparticles were combined with PPy via chemical polymerization to obtain PPy/Nb 2 O 5 nanocomposite structure and...

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Bibliographic Details
Published in:Materials and manufacturing processes 2016-11, Vol.31 (15), p.1976-1982
Main Authors: Kotresh, S., Ravikiran, Y. T., Vijaya Kumari, S. C., Chandrasekhar, T., Ramana, Ch. V.V., Thomas, S.
Format: Article
Language:English
Subjects:
Liquid petroleum gas
Nanocomposites
Niobium pentoxide
P-n junction
Polypyrrole
Selectivity
Sensing response
Stability
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Summary:In the present work, fabrication of polypyrrole (PPy)/niobium pentoxide (Nb 2 O 5 ) nanocomposite as room temperature liquefied petroleum gas (LPG) sensing device is reported. Nb 2 O 5 nanoparticles were combined with PPy via chemical polymerization to obtain PPy/Nb 2 O 5 nanocomposite structure and was characterized for structural and morphological studies by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) techniques. Then, the nanocomposites were chemically processed and coated on easily available glass substrate to obtain a film of the composite by cost-effective spin coating technique and a sensing response of 38.125% was observed at 500 ppm of LPG at room temperature with a response time of 75 s and recovery time of 98 s. The sensing mechanism is discussed with the help of energy band diagram.
ISSN:1042-6914
1532-2475
DOI:10.1080/10426914.2016.1151047