Thermal Annealing Effect on Structural, Morphological, and Sensor Performance of PANI-Ag-Fe Based Electrochemical E. coli Sensor for Environmental Monitoring

Table 1

Composition of metals in PANI-Ag-Fe nanocomposite.

Sample	Molar ratio of AgNO3 : Fe(NO3)3 in PANI-Ag-Fe	Ag content (molar%)	Fe content (molar%)	Annealing temperature (°C)
1A	PANI-Ag0.8-Fe0.2	80	20	—
1B	PANI-Ag0.6-Fe0.4	60	40	—
1C	PANI-Ag0.4-Fe0.6	40	60	—
1D	PANI-Ag0.2-Fe0.8	20	80	—
2A	PANI-Ag0.8-Fe0.2	80	20	300
2B	PANI-Ag0.6-Fe0.4	60	40	300
2C	PANI-Ag0.4-Fe0.6	40	60	300
2D	PANI-Ag0.2-Fe0.8	20	80	300