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Room-Temperature Gas Sensing Based on Electron Transfer between Discrete Tin Oxide Nanocrystals and Multiwalled Carbon Nanotubes

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

original image

A new gas-sensing platform for low-concentration gases (NO2, H2, and CO) comprises discrete SnO2 nanocrystals uniformly distributed on the surface of multiwalled carbon nanotubes (CNTs). The resulting hybrid nanostructures are highly sensitive, even at room temperature, because their gas sensing abilities rely on electron transfer between the nanocrystals and the CNTs.

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