Development of Au@NiO decorated polypyrrole composite for non-Enzymatic electrochemical sensing of cholesterol

In this study, glassy carbon electrode modified by [email protected] decorated polypyrrole nanocomposite ([email protected]/PPy-GCE) was fabricated for sensing of cholesterol by non-enzymatic electrochemical method. The composite was characterized by XRD, XPS and morphological studies were examined using FE-SEM and TEM. The redox properties of cholesterol were investigated by cyclic voltammetry. When differential pulse voltammetry was employed to sense cholesterol, it exhibited a linear range from 1.0 × 10-5 to 1.0 × 10-4 M, with the sensitivity 7.6 µA µM−1 cm−2 and detection limit 5.8 x10-7 M. Hence, this composite has excellent practical applications towards the fabrication of commercial sensors.