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 µM-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.

合成了一种新型的修饰电化学电极，在还原的氧化石墨（rGO）/氧化碳纳米纤维（oxCNF）上修饰的镍（Ni），Ni / rGO-oxCNF用于多巴胺（DA）的电化学检测。在差分脉冲伏安法检测DA时，合成电极在0.21 V处显示出明显的峰。在抗坏血酸和尿酸的存在下，它也显示出极好的选择性，具有很强的分离潜力。对于DA的浓度范围（10 µM-16 µM），检测灵敏度为1.64 µA / µM，检测极限为0.6 µM。因此，修饰的电极可能是DA电化学检测的良好选择。