Graphene Oxide Nano-sheets/Ferrocene Derivative Modified Carbon Paste Electrode as an Electrochemical Sensor for Determination of hydrazine

A ferrocene-derivative compound, 2,7-bis (ferrocenyl ethynyl) fluoren-9-one (2,7- BFE), was synthesized and used to construct a modified-graphene oxide nano-sheets paste electrode. The electro-oxidation of hydrazine at the surface of the modified electrode was studied using electrochemical approaches. Under the optimized conditions, the square wave voltammetric peak current of hydrazine increased linearly with hydrazine concentrations in the range of 2.2×10-7 to 3.0×10?4 M and a detection limit of 9.8×10?8 M was obtained for hydrazine. Finally this modified electrode was used for determination of hydrazine in some water samples