氧化石墨烯负载钯纳米颗粒作为肾上腺素的电化学传感器

S. Renjini, Pinky Abraham, T. Kumar, V. Kumary, P. Chithra
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引用次数: 0

摘要

研究了钯掺杂还原氧化石墨烯玻碳电极(rGO/Pd/GCE)对肾上腺素(EP)的电化学性能。利用循环伏安法(CV)和差分脉冲伏安法(DPV)等电化学技术证实了纳米复合材料对GCE的改性,发现EP的电化学性能得到了极大的增强。研究表明,EP的氧化是通过扩散控制过程发生的。EP氧化峰电流在1µM ~ 10µM浓度范围内呈良好的线性关系,检测限极低,为30 nM。DPV干扰研究显示尿酸(UA)和EP有明显的峰分离,这在生物系统中有很大的相关性。因此,修饰电极可以选择性地检测存在UA的EP。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Graphene oxide supported palladium nanoparticle as an electrochemical sensor for epinephrine
The electrochemical performance of palladium incorporated reduced graphene oxide glassy carbon electrode (rGO/Pd/GCE) towards epinephrine (EP) was studied. Modification of GCE with nanocomposite was confirmed using electrochemical techniques such as cyclic voltammetry (CV) and differential pulse voltammetry (DPV) and it was found that the electrochemistry of EP was greatly enhanced. Studies reveal that the oxidation of EP occurs by a diffusion controlled process. Oxidation peak currents of EP exhibited good linearity with the concentration range 1 µM – 10 µM with a very low detection limit of 30 nM. The interference study with DPV showed clear peak separation for uric acid (UA) and EP, which has great relevance in biological systems. Thus the modified electrode can selectively detect EP in presence of UA.
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