Multi-walled carbon nanotubes doped with boron as an electrode material for electrochemical studies on dopamine, uric acid, and ascorbic acid

被引：54
|
作者：
Tsierkezos, Nikos G. [1 ]
Ritter, Uwe [1 ]
Thaha, Yudi Nugraha [1 ]
Downing, Clive [3 ]
Szroeder, Pawel [2 ]
Scharff, Peter [1 ]
机构：
[1] Ilmenau Univ Technol, Inst Chem & Biotechnol, Dept Chem, D-98693 Ilmenau, Germany
[2] Nicholas Copernicus Univ, Inst Phys, Fac Phys Astron & Informat, PL-87100 Torun, Poland
[3] Trinity Coll Dublin, CRANN, Adv Microscopy Lab, Dublin 2, Ireland
来源：
MICROCHIMICA ACTA | 2016年 / 183卷 / 01期
关键词：
Ascorbic acid; Boron-doped carbon nanotubes; Dopamine; Electrochemical sensing; Raman spectroscopy; Transmission electron microscopy; Uric acid; POTASSIUM FERRICYANIDE; RAMAN-SCATTERING; PASTE ELECTRODE; OXIDATION; GRAPHENE;
D O I：
10.1007/s00604-015-1585-6
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Boron-doped multi-walled carbon nanotubes (B-MWCNTs) were deposited on oxidized silicon substrate via decomposition of ethanol and boric acid in the presence of the catalyst ferrocene by means of chemical vapor deposition in a thickness of typically 900 nm. The B-MWCNTs were characterized using Raman spectroscopy and scanning electron microscopy and transmission electron microscopy in combination with energy dispersive X-ray spectroscopy. The deposited B-MWCNTs were electrochemically characterized using the ferrocyanide/ferricyanide redox system by means of cyclic voltammetry and electrochemical impedance spectroscopy. The response of B-MWCNTs towards oxidation of dopamine (DA), uric acid (UA), and ascorbic acid (AA) was studied. DA, UA and AA can be determined at working potentials of typically 0.267, 0.412, and 0.127 V (vs. Ag/AgCl) with detection limits of 0.11, 0.65, and 1.21 mu M, respectively.
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页码：35 / 47
页数：13
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