Abstract
A novel modified electrochemical electrode, nickel (Ni) decorated on reduced graphite oxide (rGO)/oxidized carbon nanofiber (oxCNF), Ni/rGO-oxCNF, was synthesized for the electrochemical detection of dopamine (DA). Synthesized electrode displayed distinct peak at 0.21 V in the detection of DA with differential pulse voltammetry. It also showed excellent selectivity in presence of ascorbic acid and uric acid, with wide separation potential. High sensitivity of 1.64 µA/µM, for the concentration range (10–16 µM) of DA and limit of detection of 0.6 µM were obtained. The modified electrode, therefore, could be a good alternative for electrochemical detection of DA.
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