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

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

doi:10.1109/NANO.2010.5697782

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

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

School of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (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 language	English
Title of host publication	2010 10th IEEE Conference on Nanotechnology, NANO 2010
Pages	466-469
Number of pages	4
DOIs	https://doi.org/10.1109/NANO.2010.5697782
Publication status	Published - 2010
Event	2010 10th IEEE Conference on Nanotechnology, NANO 2010 - Ilsan, Gyeonggi-Do, Korea, Republic of Duration: 2010 Aug 17 → 2010 Aug 20

Publication series

Name	2010 10th IEEE Conference on Nanotechnology, NANO 2010

Other

Other	2010 10th IEEE Conference on Nanotechnology, NANO 2010
Country/Territory	Korea, Republic of
City	Ilsan, Gyeonggi-Do
Period	10/8/17 → 10/8/20

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Access to Document

10.1109/NANO.2010.5697782

Cite this

Kim, I, Dong, KY, Ju, BK & Choi, HH 2010, Gas sensor for CO and NH₃ using polyaniline/CNTs composite at room temperature. in 2010 10th IEEE Conference on Nanotechnology, NANO 2010., 5697782, 2010 10th IEEE Conference on Nanotechnology, NANO 2010, pp. 466-469, 2010 10th IEEE Conference on Nanotechnology, NANO 2010, Ilsan, Gyeonggi-Do, Korea, Republic of, 10/8/17. https://doi.org/10.1109/NANO.2010.5697782

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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.",

author = "Inho Kim and Dong, {Ki Young} and Ju, {Byeong Kwon} and Choi, {Hyang Hee}",

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AU - Kim, Inho

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N2 - 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.

AB - 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.

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