期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 145, 期 1, 页码 373-377出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2009.12.035
关键词
Layer-by-layer assembly; Polyaniline/PdO; Methane gas sensor; Ultra thin films; Quartz crystal microbalance
资金
- National Science Foundation of China (NSFC) [60876051, 60736005]
- Hi-tech Research and Development Program of China [2007AA03Z422]
The polyaniline/PdO composite was synthesized by chemical oxidative polymerization of aniline with PdO nanoparticles. A methane gas sensor was made by deposition polyaniline/PdO thin films on a mass-type quartz crystal microbalance (QCM) device through layer-by-layer (LbL) self-assembly method. Scanning electron microscopy inspection shows that the polyaniline/PdO multilayers are formed with a dense network of nanofibers. The frequency responses of the polyaniline/PdO based QCM sensor to methane gas were measured at room temperature and 50 degrees C. It exhibited that the polyaniline/PdO based QCM gas sensor has a better response at room temperature than that at 50 degrees C. Meanwhile, the humidity effect is also discussed. (C) 2009 Elsevier B.V. All rights reserved.
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