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    Comparative Study on Gas-Sensing Properties of 2D (MoS2, WS2)/PANI Nanocomposites-Based Sensor

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    Comparative Study on Gas-Sensing Properties of 2D (MoS2, WS2)_PANI Nanocomposites-Based Sensor.pdf (6.533Mb)
    Date
    2022-12-01
    Author
    Parangusan, Hemalatha
    Bhadra, Jolly
    Al-Qudah, Razen Amer
    Elhadrami, Elhassen Cheikh
    Al-Thani, Noora Jabor
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    Abstract
    NH3 is a highly harmful gas; when inhaled at levels that are too high for comfort, it is very dangerous to human health. One of the challenging tasks in research is developing ammonia sensors that operate at room temperature. In this study, we proposed a new design of an NH3 gas sensor that was comprised of two-dimensional (TMDs, mainly WS2 and MoS2) and PANI. The 2D-TMDs metal was successfully incorporated into the PANI lattice based on the results of XRD and SEM. The elemental EDX analysis results indicated that C, N, O, W, S and Mo were found in the composite samples. The bandgap of the materials decreased due to the addition of MoS2 and WS2. We also analyzed its structural, optical and morphological properties. When compared to MoS2 and PANI, the proposed NH3 sensor with the WS2 composite was found to have high sensitivity. The composite films also exhibited response and recovery times of 10/16 and 14/16 s. Therefore, the composite PANI/2D-TMDs is a suitable material for NH3 gas detection applications.
    URI
    https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85144849253&origin=inward
    DOI/handle
    http://dx.doi.org/10.3390/nano12244423
    http://hdl.handle.net/10576/38420
    Collections
    • Center for Advanced Materials Research [‎1482‎ items ]
    • Chemical Engineering [‎1195‎ items ]
    • Research of Qatar University Young Scientists Center [‎213‎ items ]

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