Polypyrrole-Iron Oxide Nanocomposite for Gas Sensing Application

The book emphasizes on the development of gas sensors fabricated using thin films of PPy PPy-CSA α-Fe2O3 PPy/α-Fe2O3 hybrid nanocomposite and CSA doped PPy/α-Fe2O3 hybrid nanocomposite for the detection of various oxidizing (NO2 Cl2) and reducing gases (NH3 CH3OH C2H5OH H2S). Gas sensing performance at different concentrations of selective gas was carried out at room temperature and the performance of the sensors is evaluated in terms of their response selectivity response-recovery times and stability. Finally sensing mechanism for the same wherever possible is discussed with the help of impedance spectroscopy.