期刊
NANOMATERIALS
卷 9, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/nano9010115
关键词
rutin; amine-functionalized Fe3O4 nanoparticles; electrochemically reduced graphene oxide; nanomolar electroanalysis
类别
资金
- NSFC [61703152]
- Hunan Provincial Natural Science Foundation [2016JJ4010, 2018JJ3134]
- Postgraduates Innovation Fund of School of Life Science and Chemistry in HUT
- Doctoral Program Construction of Hunan University of Technology
- Project of Science and Technology Department of Hunan Province
- Project of Science and Technology Plan in Zhuzhou [201706-201806]
- Opening Project of Key Discipline of Materials Science in Guangdong (ESI) [GS06021, CNXY2017001, CNXY2017002, CNXY2017003]
- key Project of Department of Education of Guangdong Province [2016GCZX008]
- Project of Engineering Research Center of Foshan [20172010018]
A new electrochemical sensor for nanomolar rutin detection based on amine-functionalized Fe3O4 nanoparticles and electrochemically reduced graphene oxide nanocomposite modified glassy carbon electrode (NH2-Fe3O4 NPs-ErGO/GCE) was fabricated through a simple method, and the X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), transmission electron microscope (TEM), vibrating sample magnetometer (VSM) and electrochemical technique were used to characterize the modified electrode. The electrochemical behavior of rutin on the Fe3O4 NPs-ErGO/GCE was studied in detail. The electrochemical response of rutin at this modified electrode was remarkably higher than that of the bare GCE or other modified GCE (GO/GCE, Fe3O4 NPs-GO/GCE, and ErGO/GCE). Under the optimum determination conditions, Fe(3)O(4)NPs-ErGO/GCE provided rutin with a broader detection range of 6.0 nM-0.1 mu M; 0.1-8.0 mu M and 8.0-80 mu M, a minimum detectable concentration of 4.0 nM was obtained after 210 s accumulation. This novel method was applied in determination of rutin in pharmaceutical tablets and urine samples with satisfactory results.
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