کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7229269 | 1470920 | 2018 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nonenzymatic electrochemical sensor based on imidazole-functionalized graphene oxide for progesterone detection
ترجمه فارسی عنوان
سنسور الکتروشیمیایی غیرنزیمی بر اساس ایزای گرافین ایزایزول کاربردی برای تشخیص پروژسترون
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کلمات کلیدی
اکسید گرافن، ایمیدازول، پروژسترون، سنسور الکتروشیمیایی،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
The modification of electrode surfaces has been the target of study for many researchers in order to improve the analytical performance of electrochemical sensors. Herein, the use of an imidazole-functionalized graphene oxide (GO-IMZ) as an artificial enzymatic active site for voltammetric determination of progesterone (P4) is described for the first time. The morphology and electrochemical performance of electrode modified with GO-IMZ were characterized by scanning electron microscopy and cyclic voltammetry, respectively. Under optimized conditions, the proposed sensor showed a synergistic effect of the GO sheets and the imidazole groups anchored on its backbone, which promoted a significant enhancement on electrochemical reduction of P4. Figures of merits such as linear dynamic response for P4 concentration ranging from 0.22 to 14.0â¯Î¼molâ¯Lâ1, limit of detection of 68â¯nmolâ¯Lâ1 and limit of quantification and 210â¯nmolâ¯Lâ1 were found. In addition, presented a higher sensitivity, 426â¯nAâ¯Lâ¯Âµmolâ1, when compared to the unmodified electrode. Overall, the proposed device showed to be a promising platform for a simple, rapid, and direct analysis of progesterone.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosensors and Bioelectronics - Volume 112, 30 July 2018, Pages 108-113
Journal: Biosensors and Bioelectronics - Volume 112, 30 July 2018, Pages 108-113
نویسندگان
Ava Gevaerd, Sirlon F. Blaskievicz, Aldo J.G. Zarbin, Elisa S. Orth, Márcio F. Bergamini, Luiz H. Marcolino-Junior,