Electrodeposited nickel/platinum alloy as a biosensor for acetyl choline

Nickel and platinum find extensive use in preparation of biosensors. In the present work, Ni/Pt alloy was plated on Graphite to make acetylcholine sensor. The microstructure, surface composition and electrochemical performance of the electrode was analyzed by different techniques. The sensing performance was evaluated by cyclic voltammetry. The prepared alloy plate exhibited very good linear relationship between acetyl choline concentration and response current. The sensitivity and reproducibility of the prepared electrode were found better than other nickel electrodes reported.