Nano-composite sensors composed of single-walled carbon nanotubes and polyaniline for the detection of a nerve agent simulant gas
- Authors
- Yoo, Ran; Kim, Jeongmin; Song, Min-Jung; Lee, Wooyoung; Noh, Jin Seo
- Issue Date
- 31-Mar-2015
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- SWCNTs; Polyaniline; DMMP; Gas sensor
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v.209, pp.444 - 448
- Journal Title
- SENSORS AND ACTUATORS B-CHEMICAL
- Volume
- 209
- Start Page
- 444
- End Page
- 448
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/10688
- DOI
- 10.1016/j.snb.2014.11.137
- ISSN
- 0925-4005
- Abstract
- This paper reports the response behavior at room temperature of a composite sensor composed of single-walled nanotubes (SWCNTs) and polyaniline, to the nerve agent simulant gas dimethyl-methylphosphonate (DMMP), a typical Sarin simulant. The SWCNT-polyaniline composite was synthesized to obtain high-quality composites with good uniformity. The composites were drop-cast onto an oxidized Si substrate patterned with Pd electrodes. SWCNT-polyaniline composite sensors exhibited clear, sharp response curves for DMMP in air at room temperature, even at minuscule concentrations. The response and response time were 27.1% and 5.5 s, respectively, at 10 ppm DMMP, representing a significant improvement over the pure SWCNT network sensors previously reported. These results indicate that SWCNT-polyaniline composite sensors can be ideal DMMP sensors, operating at room temperature with high response, fast response time, and excellent reproducibility. (C) 2014 Published by Elsevier B.V.
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