Detection of toxic gases using a composite of single-walled carbon nanotubes with polyaniline
- Authors
- Yoo, Ran; Choi, Hyang Hee; Lee, Seung Hyun; Noh, Jin Seo; Lee, Wooyoung
- Issue Date
- 2013
- Publisher
- INDERSCIENCE ENTERPRISES LTD
- Keywords
- SWNTs; polyaniline; CO; NH3; gas sensor
- Citation
- INTERNATIONAL JOURNAL OF NANOTECHNOLOGY, v.10, no.8-9, pp.749 - 755
- Journal Title
- INTERNATIONAL JOURNAL OF NANOTECHNOLOGY
- Volume
- 10
- Number
- 8-9
- Start Page
- 749
- End Page
- 755
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/15889
- DOI
- 10.1504/IJNT.2013.054215
- ISSN
- 1475-7435
- Abstract
- We reported on the response behaviours of a composite sensor of SWNTs with polyaniline to detect noxious gases at room temperature. The SWNT-polyaniline composite synthesised was found to be high-quality with good uniformity. A combination of photolithography and a lift-off process was utilised to fabricate 100-nm thick Pd electrodes on drop-cast SWNT-polyaniline composite. The composite-based sensor showed high sensitivities to NH3 concentration of 35 ppm and CO concentration of 50 ppm at room temperature. The observed sensitivity was 4% and -5.5% for the respective gas species in air. These results indicate that SWNT-polyaniline composite sensors employing Pd electrodes can be a good candidate for a noxious gas sensor that is able to simultaneously detect multiple gases in different modes down to minimal concentrations at room temperature.
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Collections - 바이오나노대학 > 나노물리학과 > 1. Journal Articles
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