Polyaniline nanowires-gold nanoparticles hybrid network based chemiresistive hydrogen sulfide sensor


Journal Article

We report a sensitive, selective, and fast responding room temperature chemiresistive sensor for hydrogen sulfide detection and quantification using polyaniline nanowires-gold nanoparticles hybrid network. The sensor was fabricated by facile electrochemical technique. Initially, polyaniline nanowires with a diameter of 250-320 nm bridging the gap between a pair of microfabricated gold electrodes were synthesized using templateless electrochemical polymerization using a two step galvanostatic technique. Polyaniline nanowires were then electrochemically functionalized with gold nanoparticles using cyclic voltammetry technique. These chemiresistive sensors show an excellent limit of detection (0.1 ppb), wide dynamic range (0.1-100 ppb), and very good selectivity and reproducibility. © 2009 American Institute of Physics.

Full Text

Duke Authors

Cited Authors

  • Shirsat, MD; Bangar, MA; Deshusses, MA; Myung, NV; Mulchandani, A

Published Date

  • March 6, 2009

Published In

Volume / Issue

  • 94 / 8

International Standard Serial Number (ISSN)

  • 0003-6951

Digital Object Identifier (DOI)

  • 10.1063/1.3070237

Citation Source

  • Scopus