期刊
ELECTROANALYSIS
卷 29, 期 2, 页码 602-608出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201600408
关键词
reduced graphene oxide; Au-Pt nanoclusters; ofloxacin; electrochemical sensor
Pt-Au nanoclusters decorated on the surface of reduced graphene oxide (rGO/Pt-Au) was facilely prepared by one-pot electrochemical reduction. The morphology and composition of rGO/Pt-Au composites had been characterized by scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectrometry (EDX), fourier transform-infrared spectroscopy (FT-IR) and electrochemical methods. Ofloxacin is a member of synthetic quinolones which has been widely used for the treatment of common diseases in humans and animals. The performance of the rGO/Pt-Au nanocomposite toward the oxidation of ofloxacin was compared with the other similar nanostructures like rGO/Pt and rGO/Au. In the optimized conditions, two linear calibration curves were obtained, from 0.08 to 10M and 10 to 100M ofloxacin. A detection limit of 0.05M ofloxacin was observed at pH5.7 for the GCE/rGO/Pt-Au. The proposed sensor was successfully applied to determine ofloxacin in tablets and human urine samples and the results were satisfactory.
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