期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 114, 期 2, 页码 768-773出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2005.07.022
关键词
gas sensor; humidity sensor; polypyrrole
Nanocomposites of PPY-Fe3O4 have been synthesized using an emulsion polymerization method in aqueous solution. The resulting polymer composites possessed much higher conductivity as compared to pure polypyrrole (PPY) and the conductivity decreased with increasing the PPY content. The composite exhibited fairly high sensitivity to relative humidity and some commonly used gases (N-2, O-2 and CO2). Changes in resistance for nitrogen and oxygen gas have also been reported. Based on these results, it is expected that these composites may furnish a simple means of humidity and gas sensing. (c) 2005 Elsevier B.V. All rights reserved.
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