Abstract

Transition metal telluride magnetic semiconductors were highly attractive because of their wide range of applications in different technology. In continuance, Pt-doped CoTe magnetic semiconductor was successfully synthesized by the hydrothermal approach and proposed as a catalyst for the electrochemical sensors. The hexagonal crystal structure, nanollake/nanosheet morphology, and porous microstructure of the samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and transmission electron microscopy (TEM) respectively. The electrochemical sensing behavior of the modified PVCoTe/GCE electrode was studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Observed electrochemical results infer the excellent catalytic activity of 5% Pt-doped Co'le towards dopamine and showed a maximum peak current with low peak potential when compared to other modified electrodes. 'the 5%Pt-doped CoTe electrode exhibits high sensitivity and a desirable limit of detection (LOD) of 25 nM. The intrinsic magnetic characteristics also evaluated for this magnetic semiconductor and demonstrate the fascinating application for spintronics devices. This finding unveils the new application of magnetic semiconductors in cost-effective electrochemical detection of biomolecules.