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Preparation of PANI doped TiO2 nanocomposite thin film and its relevance as room temperature liquefied petroleum gas sensor

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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.

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Acknowledgements

Dr. Rakesh K. Sonker is grateful to Babasaheb Bhimrao Ambedkar University, Lucknow for fellowship and also the financial support provided by the Department of Science and Technology, India, under the Science and Engineering Research Board National Postdoctoral Fellowship (PDF/2016/002827). Prof. Vinay Gupta is highly acknowledged for providing research facilities at Department of Physics and Astrophysics, University of Delhi, Delhi, India.

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Authors and Affiliations

  1. Nanomaterials and Sensor Research Laboratory, Department of Applied Physics, Babasaheb Bhimrao Ambedkar University, Lucknow, Uttar Pradesh, 226025, India

    Rakesh K. Sonker, B. C. Yadav & S. R. Sabhajeet

  2. Department of Physics and Astrophysics, University of Delhi, Delhi, 110007, India

    Rakesh K. Sonker

Authors
  1. Rakesh K. Sonker
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  2. B. C. Yadav
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  3. S. R. Sabhajeet
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Correspondence to B. C. Yadav.

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Sonker, R.K., Yadav, B.C. & Sabhajeet, S.R. Preparation of PANI doped TiO2 nanocomposite thin film and its relevance as room temperature liquefied petroleum gas sensor. J Mater Sci: Mater Electron 28, 14471–14475 (2017). https://doi.org/10.1007/s10854-017-7309-4

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  • DOI: https://doi.org/10.1007/s10854-017-7309-4

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