Gas sensor for CO and NH3 using polyaniline/CNTs composite at room temperature

Inho Kim, Ki Young Dong, Byeong Kwon Ju, Hyang Hee Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We fabricated a gas sensor for the detection of a carbon monoxide (CO) and ammonia (NH3) gas using single walled carbon nanotubes (SWNTs) and polyaniline(PANI) composite. The SWNTs were dispersed in sodium dodecyl sulfate (SDS) and were applied over the electrodes of an interdigitated electrodes (IDEs) by photolithography. By using this method, the active area for gas sensing can be denned more clearly than with simple dropping or stamping, though it is still difficult to control the concentration of dispersed composite. Our sensor showed faster response to the CO gas than the NH3 gas. The CO increased the conductance of the composite, while NH3 showed an opposite response. Nevertheless, the composite were more adsorptive to CO than NH3. In addition, we observed CO and NH3 gases were mixed carefully with the same concentrations of 5 ppm.

Original languageEnglish
Title of host publication2010 10th IEEE Conference on Nanotechnology, NANO 2010
Pages466-469
Number of pages4
DOIs
Publication statusPublished - 2010 Dec 1
Event2010 10th IEEE Conference on Nanotechnology, NANO 2010 - Ilsan, Gyeonggi-Do, Korea, Republic of
Duration: 2010 Aug 172010 Aug 20

Publication series

Name2010 10th IEEE Conference on Nanotechnology, NANO 2010

Other

Other2010 10th IEEE Conference on Nanotechnology, NANO 2010
CountryKorea, Republic of
CityIlsan, Gyeonggi-Do
Period10/8/1710/8/20

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Kim, I., Dong, K. Y., Ju, B. K., & Choi, H. H. (2010). Gas sensor for CO and NH3 using polyaniline/CNTs composite at room temperature. In 2010 10th IEEE Conference on Nanotechnology, NANO 2010 (pp. 466-469). [5697782] (2010 10th IEEE Conference on Nanotechnology, NANO 2010). https://doi.org/10.1109/NANO.2010.5697782