期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 830, 期 -, 页码 63-71出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2018.10.015
关键词
Reduced graphene oxide; Gold nanoparticles; Electrodeposition; Nitrazepam; Voltammetry; Sensor
资金
- Hungarian Romanian Research Platform for Smart Materials Research Projects Support [HURO/1101/191/2.2.1]
- project Cercetare de excelenta la Universitatea din Oradea in domeniul nanomaterialelor [CNFIS-FDI-2018-0552]
A new nanoplatform based on reduced graphene oxide decorated with electrochemically generated gold nanoparticles was developed for sensitive and selective determination of nitrazepam. This nanostructure was characterized by Fourier transform infrared spectroscopy, atomic force microscopy, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy and electrochemical methods. The synergic effect of the two nanomaterials gives an electrode platform with a high surface area, good conductivity and excellent catalytic properties. The sensor exhibited a wide linear range (0.5 mu M-400 mu M), low limit of detection (0.166 mu M), excellent sensitivity, good selectivity, and high stability for nitrazepam determination in serum and a pharmaceutical formulation with excellent recovery rates (99%-102.4%).
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