کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5031706 | 1369954 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sensitive electrochemical detection of rutin and isoquercitrin based on SH-β-cyclodextrin functionalized graphene-palladium nanoparticles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, a sensitive electrochemical method based on thio-β-cyclodextrin functionalized graphene/palladium nanoparticles (SH-β-CD-Gr/PdNPs) was developed to detect rutin and isoquercitrin, respectively. The obtained SH-β-CD-Gr/PdNPs were characterized by UV-vis spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The results confirm that SH-β-CD and PdNPs were successfully deposited on the surface of graphene nanosheets (GNs). The peak currents of rutin and isoquercitrin on the SH-β-CD-Gr/PdNPs modified glassy carbon electrode (GCE) are dramatically increased compared with that on the bare GCE and SH-β-CD-Gr/GCE. It indicated that the nanocomposite integrated the excellent electric conductivity and electrocatalytic activity of graphene and PdNPs, as well as the host-guest recognition and enrichment ability of SH-β-CD. Under optimum conditions, differential pulse voltammetry (DPV) was used to measure the peak currents of the two drugs. The linear response ranges for rutin and isoquercitrin are 1.0Ã10â9-3.0Ã10â5 mol Lâ1 and 5.0Ã10â12-5.0Ã10â6 mol Lâ1, with low detection limits of 3.0Ã10â10 mol Lâ1 and 1.6Ã10â12 mol Lâ1, respectively. The proposed method might offer a new possibility for electrochemical analysis of rutin and isoquercitrin in pharmaceuticals or human serum owing to its low cost, simplicity, high sensitivity and good stability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 89, Part 1, 15 March 2017, Pages 444-452
Journal: Biosensors and Bioelectronics - Volume 89, Part 1, 15 March 2017, Pages 444-452
نویسندگان
Zhiguang Liu, Qiong Xue, Yujing Guo,