Poly(m-aminobenzene sulfonic acid) functionalized single-walled carbon nanotubes based gas sensor


Journal Article

We have demonstrated a NH3, NO2 and water vapour sensor based on poly(m-aminobenzene sulfonic acid) functionalized single-walled carbon nanotube (SWNT-PABS) networks. The SWNT-PABS based sensors were fabricated by simple dispersion of SWNT-PABS on top of pre-fabricated gold electrodes. SWNT-PABS sensors showed excellent sensitivity with ppbv level detection limits (i.e., 100 ppbv for NH3 and 20 ppbv for NO2) at room temperature. The response time was short and the response was totally reversible. The sensitivity could be tuned by adjusting the sensor initial resistance. The sensors were also suitable for monitoring relative humidity in air. © IOP Publishing Ltd.

Full Text

Duke Authors

Cited Authors

  • Zhang, T; Mubeen, S; Bekyarova, E; Yoo, BY; Haddon, RC; Myung, NV; Deshusses, MA

Published Date

  • April 25, 2007

Published In

Volume / Issue

  • 18 / 16

Electronic International Standard Serial Number (EISSN)

  • 1361-6528

International Standard Serial Number (ISSN)

  • 0957-4484

Digital Object Identifier (DOI)

  • 10.1088/0957-4484/18/16/165504

Citation Source

  • Scopus