Dopamine sensor based on a glassy carbon electrode modified with a reduced graphene oxide and palladium nanoparticles composite

被引：2
|
作者：
Selvakumar Palanisamy
Shuhao Ku
Shen-Ming Chen
机构：
[1] National Taipei University of Technology,Electroanalysis and Bioelectrochemistry Lab, Department of Chemical Engineering and Biotechnology
来源：
Microchimica Acta | 2013年 / 180卷
关键词：
Reduced graphene oxide; Palladium nanoparticles; Dopamine; Electrochemical oxidation; Sensor;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We report on a sensitive electrochemical sensor for dopamine (DA) based on a glassy carbon electrode that was modified with a nanocomposite containing electrochemically reduced graphene oxide (RGO) and palladium nanoparticles (Pd-NPs). The composite was characterized by scanning electron microscopy, energy dispersive spectroscopy, and electrochemical impendence spectroscopy. The electrode can oxidize DA at lower potential (234 mV vs Ag/AgCl) than electrodes modified with RGO or Pd-NPs only. The response of the sensor to DA is linear in the 1–150 μM concentration range, and the detection limit is 0.233 μM. The sensor was applied to the determination of DA in commercial DA injection solutions.
引用
收藏
页码：1037 / 1042
页数：5
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