Gas Sensors: Room-Temperature Gas Sensing Based on Electron Transfer between Discrete Tin Oxide Nanocrystals and Multiwalled Carbon Nanotubes (Adv. Mater. 24/2009)

Authors

  • Ganhua Lu,

    1. Department of Mechanical Engineering University of Wisconsin-Milwaukee 3200 North Cramer Street, Milwaukee, WI 53211 (USA)
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  • Leonidas E. Ocola,

    1. Center for Nanoscale Materials, Argonne National Laboratory 9700 South Cass Avenue, Argonne, IL 60439 (USA)
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  • Junhong Chen

    Corresponding author
    1. Department of Mechanical Engineering University of Wisconsin-Milwaukee 3200 North Cramer Street, Milwaukee, WI 53211 (USA)
    • Department of Mechanical Engineering University of Wisconsin-Milwaukee 3200 North Cramer Street, Milwaukee, WI 53211 (USA).
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Abstract

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Hybrid nanostructures consisting of multiwalled carbon nanotubes (CNTs) uniformly coated with SnO2 nanocrystals can be used as a novel gas sensing platform, exhibiting high sensitivity to low-concentration gases (NO2, H2, and CO) at room temperature, report Junhong Chen and co-workers on p. 2487. The hybrid nanomaterial provides a new opportunity to engineer sensing devices through electronic transfer between the nanocrystals and the CNT.

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