کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
181387 459401 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Application of graphene-modified electrode for selective detection of dopamine
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Application of graphene-modified electrode for selective detection of dopamine
چکیده انگلیسی

Graphene was synthesized chemically by Hummers and Offeman method and the graphene-modified electrode was applied in selective determination of dopamine with a linear range from 5 μM to 200 μM in a large excess of ascorbic acid. Selective detection was realized in completely eliminating ascorbic acid, different from the methods based on the potential separations. π–π stacking interaction between dopamine and graphene surface may accelerate the electron transfer whereas weaken the ascorbic acid oxidation on this graphene-modified electrode. The resulted graphene-modified electrode also showed a better performance than multi-walled carbon nanotubes-modified electrode. The phenomena were considered from the elusive two-dimensional structure and unique electronic properties of graphene.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 11, Issue 4, April 2009, Pages 889–892
نویسندگان
, , , , ,