Determination of dopamine on a nanostructured boron-doped diamond electrode

0423316 - FZÚ 2014 AT eng A - Abstract
Vojs, Marian - Behul, M. - Michniak, P. - Řeháček, V. - Redhammer, R. - Ižák, Tibor - Kromka, Alexander
Determination of dopamine on a nanostructured boron-doped diamond electrode.
International Winterschool on Electronic Properties of Novel Materials /27./. Kirchberg: Kirchberg, 2013 - (Machon, M.; Herziger, F.). s. 176-176
[International Winterschool on Electronic Properties of Novel Materials /27./. 02.03.2013-09.03.2013, Kirchberg]
R&D Projects: GA ČR(CZ) GBP108/12/G108
Institutional support: RVO:68378271
Keywords : diamond electrode * electrochemistry * dopamin
Subject RIV: BM - Solid Matter Physics ; Magnetism

In the present article, technological steps as growth of intrinsic nanodiamond (i-NCD)/BDD double layer, electrode fabrication and electrochemical response to dopamine (DA) are discussed. DA concentration was determined using the cyclic voltammetry and square-wave (SW) stripping voltammetry methods. The results show that the nano-structured electrodes exhibit a more ten times higher limit of detection then non-structured BDDE and strongly dependence of morphology i-NCD. Electrochemical oxidation of DA was carried out at BDDE, with which very stable and reproducible was observed within 4 h. The analytical detection limit nanostructured BDDE of anodic dopamine maximum (3xstandard deviation/slope) was determined to be SW: 1.7x10-6 M, adj. R square=0.998, and the maximum was shifted to 0.55 V vs. Ag/AgCl at the optimum conditions.
Permanent Link: http://hdl.handle.net/11104/0229428