کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6661910 | 1426559 | 2018 | 29 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A novel way for analysis of calycosin via polyaniline functionalized graphene quantum dots fabricated electrochemical sensor
ترجمه فارسی عنوان
یک روش جدید برای تجزیه و تحلیل کالی کوسین از طریق نقاط کوانتومی گرافن کارپیتالیزه شده پلیانیلین ساخته شده از سنسور الکتروشیمیایی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
In this study, polyaniline functionalized graphene quantum dots composite with excellent performance was successfully prepared by situ polymerized, and it was applied to fabricate electrochemical sensor for analysis of calycosin in the complex samples of traditional Chinese medicine. The polyaniline functionalized graphene quantum dots composite was characterized by Fourier transform infrared spectroscopy and Raman analysis, to indicate that polyaniline functionalized graphene quantum dots composite was successfully synthesized. The morphology and microstructure of the modified electrodes were characterized by Scanning electron microscope and Transmission electron microscope. According to the results of cyclic voltammetry and electrochemical impedance spectroscope, the glassy carbon electrode modified with polyaniline functionalized graphene quantum dots composite significantly increased the electron transfer rate on the surface of sensor. Under the optimized conditions, the fabricated sensor was used for the analysis of calycosin in Radix Hedysari and Radix Astragali by differential pulse voltammetry, which displayed acceptable reproducibility, long-term stability, good selectivity and sensitivity. The proposed sensor exhibited a wide detection range (1.1â¯Ãâ¯10â5-3.52â¯Ãâ¯10â4â¯mol/L) with a detection limit of 9.8â¯Ãâ¯10â6â¯mol/L (S/Nâ¯=â¯3). This study provided a novel and convenient method for rapid evaluation of the quality of Radix Hedysari and Radix Astragali.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 816, 1 May 2018, Pages 123-131
Journal: Journal of Electroanalytical Chemistry - Volume 816, 1 May 2018, Pages 123-131
نویسندگان
Jinying Cai, Bolu Sun, Xiaodan Gou, Yuqiang Gou, Wen Li, Fangdi Hu,