Detection of toxic gases using a composite of single-walled carbon nanotubes with polyaniline

Ran Yoo, Hyang Hee Choi, Seung Hyun Lee, Jin Seo Noh, Wooyoung Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We reported on the response behaviours of a composite sensor of SWNTs with polyaniline to detect noxious gases at room temperature. The SWNT-polyaniline composite synthesised was found to be high-quality with good uniformity. A combination of photolithography and a lift-off process was utilised to fabricate 100-nm thick Pd electrodes on drop-cast SWNT-polyaniline composite. The composite-based sensor showed high sensitivities to NH 3 concentration of 35 ppm and CO concentration of 50 ppm at room temperature. The observed sensitivity was 4% and -5.5% for the respective gas species in air. These results indicate that SWNT-polyaniline composite sensors employing Pd electrodes can be a good candidate for a noxious gas sensor that is able to simultaneously detect multiple gases in different modes down to minimal concentrations at room temperature.

Original languageEnglish
Pages (from-to)749-755
Number of pages7
JournalInternational Journal of Nanotechnology
Volume10
Issue number8-9
DOIs
Publication statusPublished - 2013 Jun 17

Fingerprint

Poisons
Single-walled carbon nanotubes (SWCN)
Polyaniline
Gases
carbon nanotubes
composite materials
Composite materials
gases
sensors
Sensors
room temperature
Electrodes
electrodes
sensitivity
Photolithography
Carbon Monoxide
photolithography
Chemical sensors
Temperature
casts

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Yoo, Ran ; Choi, Hyang Hee ; Lee, Seung Hyun ; Noh, Jin Seo ; Lee, Wooyoung. / Detection of toxic gases using a composite of single-walled carbon nanotubes with polyaniline. In: International Journal of Nanotechnology. 2013 ; Vol. 10, No. 8-9. pp. 749-755.
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Detection of toxic gases using a composite of single-walled carbon nanotubes with polyaniline. / Yoo, Ran; Choi, Hyang Hee; Lee, Seung Hyun; Noh, Jin Seo; Lee, Wooyoung.

In: International Journal of Nanotechnology, Vol. 10, No. 8-9, 17.06.2013, p. 749-755.

Research output: Contribution to journalArticle

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