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Investigation on hydrogen sensing property of MWCNT/Pani nanocomposite films

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Abstract

Hydrogen sensing property of composite films of camphorsulfonic acid-protonated polyaniline (Pani) with different amounts of multiwall carbon nanotube (MWCNT) was investigated in this paper. The MWCNT/Pani composite films were deposited by a spin-coating method on both ITO and Au-interdigitated electrodes (Au-IDE) substrates. Sensor film characteristics were evaluated by monitoring the change in electrical resistance in the presence of hydrogen at room temperature. It was observed that all MWCNT/Pani composite films showed the better sensor indicators such as sensitivity, response and recovery times in comparison with pure Pani. It was found that sensor indicators were improved by increasing the MWCNT filler concentration in composite. Moreover, it was observed that Au-IDE substrate drastically increased sensor sensitivity in comparison with uniform ITO-coated glass at 4 wt% MWCNTs exposed to 0.4 vol% H2 in the air.

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Authors and Affiliations

  1. Young Researchers and Elite Club, West Tehran Branch, Islamic Azad University, Tehran, Iran

    Nastaran Bafandeh

  2. Physics and Accelerators Research School, Nuclear Science and Technology Research Institute, Tehran, Iran

    Madjid Mojtahedzadeh Larijani

  3. School of Physics, Institute for Research in Fundamental Sciences, P.O. Box 19395-5531, Tehran, Iran

    Azizollah Shafiekhani

  4. Physics Department, Alzahra University, P.O. Box 1993891167, Tehran, Iran

    Azizollah Shafiekhani

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  1. Nastaran Bafandeh
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  2. Madjid Mojtahedzadeh Larijani
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  3. Azizollah Shafiekhani
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Correspondence to Madjid Mojtahedzadeh Larijani.

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Bafandeh, N., Larijani, M.M. & Shafiekhani, A. Investigation on hydrogen sensing property of MWCNT/Pani nanocomposite films. Polym. Bull. 77, 3697–3706 (2020). https://doi.org/10.1007/s00289-019-02915-8

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  • DOI: https://doi.org/10.1007/s00289-019-02915-8

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