Polypyrrole Thin Film: Room Temperature Ammonia Gas Sensor

Polypyrrole Thin Film: Room Temperature Ammonia Gas Sensor

Polypyrrole thin films were synthesized in situ by chemical polymerization. The morphological studies by Scanning Electron Microscopy showed formation of uniform granular structure with average grain size of 0.6 μm. Fourier transform infrared spectroscopy revealed formation of polypyrrole. The film...

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Veröffentlicht in:IEEE sensors journal 2011-09, Vol.11 (9), p.2137-2141
Hauptverfasser: Chougule, M. A., Pawar, S. G., Patil, S. L., Raut, B. T., Godse, P. R., Sen, S., Patil, V. B.
Format: Artikel
Sprache:eng
Schlagworte:
Ammonia
Ammonia sensor
chemical polymerization
Chemical sensors
Chemicals
Fourier transforms
FTIR
Gas detectors
Gas sensors
Grain size
Infrared spectroscopy
polypyrrole
Polypyrroles
Sensors
Temperature measurement
Temperature sensors
Thin films
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Zusammenfassung:Polypyrrole thin films were synthesized in situ by chemical polymerization. The morphological studies by Scanning Electron Microscopy showed formation of uniform granular structure with average grain size of 0.6 μm. Fourier transform infrared spectroscopy revealed formation of polypyrrole. The film composition was also characterized by UV-Vis Spectroscopy. These films were investigated for their sensing behavior towards NH 3 , C 2 H 5 OH and CH 3 OH gases at room temperature. It has been observed that these films are selective for ammonia gas, and the sensitivity exhibited a linear response in range of 5-100 ppm. These studies show that polypyrrole films can be used as room temperature ammonia sensors.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2011.2112765