Synthesis, Charaterization and Electrochemical Sensing Properties of PANI-Cobalt doped α-Fe2O3 Nanocomposites.

The PANI-NSA/(4%Co)α-Fe2O3 composite was prepared by a template free method in the presence of β-Napthalene sulphonic acid (β-NSA) as a dopant for PANI. The FTIR spectroscopy was used to confirm the formation of the composite. The structural property of the composite was characterized by XRD. The morphological property of the composite was characterized by SEM. The SEM image of composite showed that the particles are homogenous. The electrochemical sensing ability of ascorbic acid (AA) by PANI-NSA and composite modified GCE exhibited higher anodic current response than the bare GCE. Compared with the bare and PANI-NSA modified GCE, PANI-NSA/(4%Co)α-Fe2O3 composite modified GCE showed larger current response with shift towards less positive potential. [ABSTRACT FROM AUTHOR]