Palladium nanoparticles decorated single-walled carbon nanotube hydrogen sensor

Published

Journal Article

We developed a simple and cost-effective fabrication technique to construct a hydrogen nanosensor by decorating single-walled carbon nanotubes with Pd nanoparticles. By varying the sensor's synthesis conditions (e.g., Pd electrodeposition charge, deposition potential, and initial baseline resistance of the SWNT network), the sensing performance was optimized. The optimized sensor showed excellent sensing properties toward hydrogen (ΔR/R of 0.42%/ppm) with a lower detection limit of 100 ppm and a linear response up to 1000 ppm. The response time decreased from tens of minutes to a few minutes with increasing hydrogen concentration at room temperature. The sensor's recovery time improved under humid air conditions compared to dry air conditions. © 2007 American Chemical Society.

Full Text

Duke Authors

Cited Authors

  • Mubeen, S; Zhang, T; Yoo, B; Deshusses, MA; Myung, NV

Published Date

  • May 3, 2007

Published In

Volume / Issue

  • 111 / 17

Start / End Page

  • 6321 - 6327

Electronic International Standard Serial Number (EISSN)

  • 1932-7455

International Standard Serial Number (ISSN)

  • 1932-7447

Digital Object Identifier (DOI)

  • 10.1021/jp067716m

Citation Source

  • Scopus