کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7681613 | 1495821 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical biosensor based on silver nanoparticles-polydopamine-graphene nanocomposite for sensitive determination of adenine and guanine
ترجمه فارسی عنوان
بیوسنسور الکتروشیمیایی بر پایه نانوذرات نقره - نانو کامپوزیت پلی هیدپامین گرافن برای تعیین حساس آدنین و گوانین
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
A multifunctional Ag nanoparticles (AgNPs)-polydopamine (Pdop)@graphene (Gr) composite was prepared by a simple and mild procedure. Gr was easily coated with Pdop at room temperature and then AgNPs was deposited by mildly stirring. The nanocomposite was characterized by scanning electron microscope (SEM) and transmission electron microscope (TEM). Guanine and adenine as model moleculars were employed to study their electrochemical responses at the Ag-Pdop@Gr composite modified electrode, which showed more favorable electron transfer kinetics than Gr modified glassy carbon and AgNPs modified glassy carbon electrodes. The Ag-Pdop@Gr modified electrode exhibited linear ranges of 0.04-50 μM and 0.02-40 μM with detection limits of 4.0 nM and 2.0 nM for guanine and adenine, respectively. The developed method was applied for simultaneous determination of trace-level adenine and guanine in fish sperm. The results demonstrated that the AgNPs-Pdop@Gr nanocomposite was a promising substrate for the development of high-performance electrocatalysts for biosensing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 114, 30 September 2013, Pages 43-48
Journal: Talanta - Volume 114, 30 September 2013, Pages 43-48
نویسندگان
Ke-Jing Huang, Lan Wang, Hai-Bo Wang, Tian Gan, Ying-Ying Wu, Jing Li, Yan-Ming Liu,