Gas Sensing performance of composite materials using conducting polymer/single-walled carbon nanotubes

Hyang Hee Choi; Junmin Lee; Ki Young Dong; Byeong Kwon Ju; Wooyoung Lee

doi:10.1007/s13233-012-0030-5

Gas Sensing performance of composite materials using conducting polymer/single-walled carbon nanotubes

Hyang Hee Choi, Junmin Lee, Ki Young Dong, Byeong Kwon Ju, Wooyoung Lee

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

We report the fabrication of a novel gas sensor that utilizes electrical resistance changes in electrically conductive polyaniline (PANI) and single-walled carbon nanotube (SWNT) composite materials and its sensing property when NH ₃ and CO gases co-existed. In addition, we investigated the concentration dependence of electrical properties of the PANI/SWNT composite material at room temperature using real-time monitoring. To improve the gas sensor properties, we deposited PANI using a drop-casting method to warp the PANI surrounding the SWNT. The PANI/SWNT composite material sensors showed a faster response to NH ₃ gas than CO gas. The CO gas increased the composite conductance, while the NH ₃ gas had the opposite effect. [Figure not available: see fulltext.]

Original language	English
Pages (from-to)	143-146
Number of pages	4
Journal	Macromolecular Research
Volume	20
Issue number	2
DOIs	https://doi.org/10.1007/s13233-012-0030-5
Publication status	Published - 2012 Feb

Keywords

conducting polymer
electrical resistance
gas sensors
single-walled carbon nanotubes (SWNTs)
unsafe gases

ASJC Scopus subject areas

General Chemical Engineering
Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1007/s13233-012-0030-5

Cite this

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abstract = "We report the fabrication of a novel gas sensor that utilizes electrical resistance changes in electrically conductive polyaniline (PANI) and single-walled carbon nanotube (SWNT) composite materials and its sensing property when NH 3 and CO gases co-existed. In addition, we investigated the concentration dependence of electrical properties of the PANI/SWNT composite material at room temperature using real-time monitoring. To improve the gas sensor properties, we deposited PANI using a drop-casting method to warp the PANI surrounding the SWNT. The PANI/SWNT composite material sensors showed a faster response to NH 3 gas than CO gas. The CO gas increased the composite conductance, while the NH 3 gas had the opposite effect. [Figure not available: see fulltext.]",

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AU - Dong, Ki Young

AU - Ju, Byeong Kwon

AU - Lee, Wooyoung

PY - 2012/2

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N2 - We report the fabrication of a novel gas sensor that utilizes electrical resistance changes in electrically conductive polyaniline (PANI) and single-walled carbon nanotube (SWNT) composite materials and its sensing property when NH 3 and CO gases co-existed. In addition, we investigated the concentration dependence of electrical properties of the PANI/SWNT composite material at room temperature using real-time monitoring. To improve the gas sensor properties, we deposited PANI using a drop-casting method to warp the PANI surrounding the SWNT. The PANI/SWNT composite material sensors showed a faster response to NH 3 gas than CO gas. The CO gas increased the composite conductance, while the NH 3 gas had the opposite effect. [Figure not available: see fulltext.]

AB - We report the fabrication of a novel gas sensor that utilizes electrical resistance changes in electrically conductive polyaniline (PANI) and single-walled carbon nanotube (SWNT) composite materials and its sensing property when NH 3 and CO gases co-existed. In addition, we investigated the concentration dependence of electrical properties of the PANI/SWNT composite material at room temperature using real-time monitoring. To improve the gas sensor properties, we deposited PANI using a drop-casting method to warp the PANI surrounding the SWNT. The PANI/SWNT composite material sensors showed a faster response to NH 3 gas than CO gas. The CO gas increased the composite conductance, while the NH 3 gas had the opposite effect. [Figure not available: see fulltext.]

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KW - electrical resistance

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Gas Sensing performance of composite materials using conducting polymer/single-walled carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

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