کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6661765 1426557 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanoporous carbon derived from dandelion pappus as an enhanced electrode material with low cost for amperometric detection of tryptophan
ترجمه فارسی عنوان
کربن نانو پودر قارچ به عنوان یک ماده الکترود پیشرفته با هزینه پایین برای تشخیص آمپرمترتری تریپتوفان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
A new type of nanoporous carbon (NPC) was synthesized using dandelion pappus as a cost-effective carbon source through chemical activation with phosphoric acid. Notably, NPC is first considered to be used as an enhanced electrode material for the analysis of tryptophan (Trp). The high electrical conductivity of nanoporous carbon modified electrode (NPC/GCE) was better demonstrated by cyclic voltammetry using the ferricyanide system as a probe. Furthermore, the NPC/GCE exhibited an excellent electrocatalytic activity toward Trp oxidation with a decreased overpotential and improved current response, mainly due to the porous structure and large specific surface of nanoporous carbon. The electrocatalytic oxidation mechanism of Trp at the modified electrode was also investigated by cyclic voltammetry. The amperometric response of NPC-based sensor is linear in the 1 μM to 103 μM concentration range and the sensitivity is 171.43 μA mM−1 cm−2. The proposed sensor was also successfully applied to the determination of Trp in real samples, and the satisfactory recoveries were obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 818, 1 June 2018, Pages 149-156
نویسندگان
, , , , , , ,