NH3 sensitive chemiresistor sensors using plasma functionalized multiwall carbon nanotubes/conducting polymer composites

Tai Jin Kim; Si Dong Kim; Nam Ki Min; James Jungho Pak; Cheol Jin Lee; Soo Won Kim

doi:10.1109/ICSENS.2008.4716419

NH₃ sensitive chemiresistor sensors using plasma functionalized multiwall carbon nanotubes/conducting polymer composites

Tai Jin Kim, Si Dong Kim, Nam Ki Min, James Jungho Pak, Cheol Jin Lee, Soo Won Kim

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

10 Citations (Scopus)

Abstract

We present a micromachined NH3 chemiresistor sensor based on O₂ plasma functionalized multiwall carbon nanotube (MWCNT)/ conducting polymer (CP) composites, and discuss its gas sensing mechanism. The FTIR spectra of plasma-treated MWCNTs indicate that oxygenated groups are created on the surface of CNTs after the plasma treatment. The plasma-functionalized MWCNT/PANI sensor exhibits a linear response of 3.34% per ppm NH3 for concentrations ranging from 10 to 100 ppm, and a sensitivity of about 7 times higher than that from a corresponding pristine MWCNT sensor. This dramatic change in resistance is attributed to the fact that the binding of the functional group with the defective CNT is stronger than that with the perfect one.

Original language	English
Title of host publication	2008 IEEE Sensors, SENSORS 2008
Pages	208-211
Number of pages	4
DOIs	https://doi.org/10.1109/ICSENS.2008.4716419
Publication status	Published - 2008
Event	2008 IEEE Sensors, SENSORS 2008 - Lecce, Italy Duration: 2008 Oct 26 → 2009 Oct 29

Publication series

Name	Proceedings of IEEE Sensors

Other

Other	2008 IEEE Sensors, SENSORS 2008
Country/Territory	Italy
City	Lecce
Period	08/10/26 → 09/10/29

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/ICSENS.2008.4716419

Cite this

Kim, TJ, Kim, SD, Min, NK, Pak, JJ , Lee, CJ & Kim, SW 2008, NH₃ sensitive chemiresistor sensors using plasma functionalized multiwall carbon nanotubes/conducting polymer composites. in 2008 IEEE Sensors, SENSORS 2008., 4716419, Proceedings of IEEE Sensors, pp. 208-211, 2008 IEEE Sensors, SENSORS 2008, Lecce, Italy, 08/10/26. https://doi.org/10.1109/ICSENS.2008.4716419

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abstract = "We present a micromachined NH3 chemiresistor sensor based on O2 plasma functionalized multiwall carbon nanotube (MWCNT)/ conducting polymer (CP) composites, and discuss its gas sensing mechanism. The FTIR spectra of plasma-treated MWCNTs indicate that oxygenated groups are created on the surface of CNTs after the plasma treatment. The plasma-functionalized MWCNT/PANI sensor exhibits a linear response of 3.34% per ppm NH3 for concentrations ranging from 10 to 100 ppm, and a sensitivity of about 7 times higher than that from a corresponding pristine MWCNT sensor. This dramatic change in resistance is attributed to the fact that the binding of the functional group with the defective CNT is stronger than that with the perfect one.",

author = "Kim, {Tai Jin} and Kim, {Si Dong} and Min, {Nam Ki} and Pak, {James Jungho} and Lee, {Cheol Jin} and Kim, {Soo Won}",

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