期刊
APPLIED SURFACE SCIENCE
卷 258, 期 8, 页码 3462-3468出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2011.11.098
关键词
Gas sensor; Polyaniline; Multi-walled carbon nanotubes; Oxyfluorination; Ammonia
类别
资金
- National Research Foundation of Korea [과C6B1913] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Polyaniline-coated multi-walled carbon nanotubes were prepared by in situ chemical polymerization method for the novel sensing materials of ammonia gas. The thickness of the polyaniline coatings was controlled by the oxyfluorination treatment on the multi-walled carbon nanotubes. The oxyfluorination with higher oxygen content produced the more hydrophilic functional groups on the surface of multi-walled carbon nanotubes. Both the resistivity change and the response time were significantly improved with high repeatability using the more hydrophilic multi-walled carbon nanotubes which were modified with oxyfluorination. (C) 2011 Elsevier B.V. All rights reserved.
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