Journal
MATERIALS AND MANUFACTURING PROCESSES
Volume 31, Issue 15, Pages 1976-1982Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10426914.2016.1151047
Keywords
Liquid petroleum gas; Nanocomposites; Niobium pentoxide; P-n junction; Polypyrrole; Selectivity; Sensing response; Stability
Funding
- University Grants Commission, New Delhi [41-917/2012 (SR)]
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In the present work, fabrication of polypyrrole (PPy)/niobium pentoxide (Nb2O5) nanocomposite as room temperature liquefied petroleum gas (LPG) sensing device is reported. Nb2O5 nanoparticles were combined with PPy via chemical polymerization to obtain PPy/Nb2O5 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 500ppm of LPG at room temperature with a response time of 75s and recovery time of 98s. The sensing mechanism is discussed with the help of energy band diagram.
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