Gas Sensing performance of composite materials using conducting polymer/single-walled carbon nanotubes
- Authors
- Choi, Hyang Hee; Lee, Junmin; Dong, Ki-Young; Ju, Byeong-Kwon; Lee, Wooyoung
- Issue Date
- 2월-2012
- Publisher
- POLYMER SOC KOREA
- Keywords
- gas sensors; electrical resistance; conducting polymer; single-walled carbon nanotubes (SWNTs); unsafe gases
- Citation
- MACROMOLECULAR RESEARCH, v.20, no.2, pp.143 - 146
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- MACROMOLECULAR RESEARCH
- Volume
- 20
- Number
- 2
- Start Page
- 143
- End Page
- 146
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106132
- DOI
- 10.1007/s13233-012-0030-5
- ISSN
- 1598-5032
- 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 NH3 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 NH3 gas than CO gas. The CO gas increased the composite conductance, while the NH3 gas had the opposite effect.
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