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Analysis of methanol sensitivity on SnO2-ZnO nanocomposite

  • Enobong E. Bassey
  • , Philip Sallis
  • , Krishnamachar Prasad

    Research output: Chapter in Book/Report/Conference proceedingConference proceedingpeer-review

    Abstract

    This research reports on the sensing behavior of a nanocomposite of tin dioxide (SnO2) and zinc oxide (ZnO). SnO2-ZnO nanocomposites were fabricated into sensor devices by the radio frequency sputtering method, and used for the characterization of the sensitivity behavior of methanol vapor. The sensor devices were subjected to methanol concentration of 200 ppm at operating temperatures of 150, 250 and 350 °C. A fractional difference model was used to normalize the sensor response, and determine the sensitivity of methanol on the sensor. Response analysis of the SnO2-ZnO sensors to the methanol was most sensitive at 350 °C, followed by 250 and 150 °C. Supported by the morphology (FE-SEM, AFM) analyses of the thin films, the sensitivity behavior confirmed that the nanoparticles of coupled SnO2 and ZnO nanocomposites can promote the charge transportation, and be used to fine-tune the sensitivity of methanol and sensor selectivity to a desired target gas.
    Original languageEnglish
    Title of host publicationCharacterization of Minerals, Metals, and Materials 2016 - TMS 2016: 145th Annual Meeting and Exhibition
    EditorsS. J. Ikhmayies, Z. Peng, J. P. Escobedo-Diaz, S. N. Monteiro, M. Zhang, J. Li, J. S. Carpenter, J.-Y. Hwang, B. Li, D. Firrao, C. Bai
    PublisherMinerals, Metals and Materials Society
    Pages287-291
    Number of pages5
    ISBN (Print)978-1-119-26439-2
    Publication statusPublished - 2016
    EventAnnual Meeting and Exhibition - Nashville, United States
    Duration: 14 Feb 201618 Feb 2016
    Conference number: 145
    http://www.tms.org/meetings/annual-16/AM16home.aspx#.WRxF7evyuUl (Link to conference site)

    Conference

    ConferenceAnnual Meeting and Exhibition
    Abbreviated titleTMS 2016
    Country/TerritoryUnited States
    CityNashville
    Period14/02/1618/02/16
    Internet address

    Bibliographical note

    The full text is not available on the repository.

    Keywords

    • Gas
    • Methanol
    • Nanocomposite
    • Sensor
    • SnO2
    • ZnO

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