Table 2. Pertinent parameters of PPy and PPy-MWCNTs sensing layer were derived from Langmuire’s first order adsorption model.
PPy/MWCNTs K Δθmax | PPy K Δθmax | |||
Hg | 0.3573 | 0.6273 | 0.6881 | 0.2912 |
Pb | 0.206 | 0.5064 | 2.781 | 0.2501 |
Fe a | 1.225 | 0.3387 | 0.5186 | 0.2028 |
The experimental data for detection of Fe ion using the PPy was achieved in ref [49].