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Erschienen in:
10.06.2017
Preparation of PANI doped TiO2 nanocomposite thin film and its relevance as room temperature liquefied petroleum gas sensor
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 19/2017
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Abstract
Present work reports the utility of PANI doped titanium dioxide thin film prepared by spin coating technique as LPG sensing. Optical properties were studied using UV–Vis absorption spectroscopy and FTIR spectroscopy. The surface morphology and structure of synthesized material were characterized by SEM and XRD analysis, respectively. The structural analysis confirmed the formation of TiO2–PANI having an average crystallite size 21 nm. Variations in the resistance with exposure of LPG to the sensing element were observed. Sensor response (S) as a function of time was calculated and its maximum value was found as 2.37 towards 2000 ppm of LPG, response time of the sensor was 2 min. The sensor was quite sensitive to LPG and results were found reproducible.